CA2282517C - In-fiber photonic crystals and systems - Google Patents
In-fiber photonic crystals and systems Download PDFInfo
- Publication number
- CA2282517C CA2282517C CA002282517A CA2282517A CA2282517C CA 2282517 C CA2282517 C CA 2282517C CA 002282517 A CA002282517 A CA 002282517A CA 2282517 A CA2282517 A CA 2282517A CA 2282517 C CA2282517 C CA 2282517C
- Authority
- CA
- Canada
- Prior art keywords
- photonic crystal
- optical fiber
- fiber
- crystal according
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1225—Basic optical elements, e.g. light-guiding paths comprising photonic band-gap structures or photonic lattices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02309—Structures extending perpendicularly or at a large angle to the longitudinal axis of the fibre, e.g. photonic band gap along fibre axis
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/32—Photonic crystals
Abstract
One or more photonic crystals 11, 22, 40, 58, 59 are formed directly in the path of light within an optical fiber 13, 23, 42, 56. Light processed by the photonic crystal may be transmitted out of the fiber by means of a lens 48 or it may be measured by a photoresistive device 51, 60. The photonic crystal may be formed in a trench 12 as an array of dielectric rods 16 having one or more selective defects 17, or the crystal may be formed by providing holes 20 directly in the optical fiber. Filling the interstices between rods 16 with non-linear optical material, and subjecting the crystal to a varying electric field applied by electrodes or to a varying optical radiation can produce a tunable photonic crystal within an optical fiber.
Description
In-Fiber Photonic Crystals and Systems Technical Field This invention relates to optical processing systems formed directly in and on optical fibers, including photonic crystals formed 6 directly within the light path in an optical fiber.
State of the Art Photonic crystals are known to provide wavelength-dependent filters, beam splitters, mirror components, and right-angle waveguides.
For example, reference may be had to A. Mekis, et al, "High 11 Transmission Through Sharp Bends in Photonic Crystal Waveguides", Physical Review Letters, V. 77, N. 18, 28 October 1996, pp. 3787-3790, and to H. W. P. Koops, "Photonic Crystals Built by 3-Dimensional Additive Lithography Enable Integrated Optics of High Density", in Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, 16 and applications II, (F.T.S. Yu, S. Yen, Editors) Proceedings Society Photographic and Instrumentation Engineering, Volume 2849, August, 1966, pp. 248-256. Because photonic crystals are on the order of several wavelengths in each of two major dimensions, and are made with microprocessing techniques, optical processing systems employing 21 photonic crystals can be extremely small, thereby permitting extremely high bit density and high rates of processing data.
A principal drawback, as is pointed out by Koops, supra, is the formidable problem of coupling light between waveguides and photonic crystals.
State of the Art Photonic crystals are known to provide wavelength-dependent filters, beam splitters, mirror components, and right-angle waveguides.
For example, reference may be had to A. Mekis, et al, "High 11 Transmission Through Sharp Bends in Photonic Crystal Waveguides", Physical Review Letters, V. 77, N. 18, 28 October 1996, pp. 3787-3790, and to H. W. P. Koops, "Photonic Crystals Built by 3-Dimensional Additive Lithography Enable Integrated Optics of High Density", in Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, 16 and applications II, (F.T.S. Yu, S. Yen, Editors) Proceedings Society Photographic and Instrumentation Engineering, Volume 2849, August, 1966, pp. 248-256. Because photonic crystals are on the order of several wavelengths in each of two major dimensions, and are made with microprocessing techniques, optical processing systems employing 21 photonic crystals can be extremely small, thereby permitting extremely high bit density and high rates of processing data.
A principal drawback, as is pointed out by Koops, supra, is the formidable problem of coupling light between waveguides and photonic crystals.
Disclosure of Invention Objects of the invention include coupling light directly between optical waveguides and photonic crystals, provision of optical signal processors which manipulate optical signals with a minimum of losses, optical signal processing implemented with minimal adjunctive devices, and integrated microminiature optical signal processing systems.
In accordance with this invention, there is provided a photonic crystal formed directly in the path of light within an optical fiber having a longitudinal axis, said photonic crystal formed of elements of differing refractive index, normal to said axis.
According to the present invention, a photonic crystal is formed directly in the light path within an optical fiber, whereby light is directly coupled between the optical waveguide formed by the fiber and the optical signal processor formed by the photonic crystal. In accordance with one form of the invention, a slot or trench is formed from one peripheral edge of an optical fiber through a significant fraction of the fiber, including and beyond the core of the fiber, and the optical crystal is formed in that space, thereby being directly in the path of the light as it traverses the optical fiber. In the first embodiment, the photonic crystal may preferably be formed by dielectric rods produced, for instance, by three dimensional additive lithography, in a defined geometric pattern which determines the characteristics, wavelength and band width of the resulting photonic crystal device. According to the invention in another form, a photonic crystal is formed directly in an optical fiber by drilling substantially cylindrical columnar holes in a photonic crystal pattern, dependent upon the effect and wavelengths desired, directly 2a into the optical fiber, from one peripheral edge, through a significant fraction of the fiber including and beyond the core of the fiber.
In accordance with the invention, the interstices between the dielectric rods formed in a trench within an optical fiber contain a non-linear optical material, which has an electrically controllable or optically controllable dielectric constant, to provide wavelength-controllable photonic crystals, such as for use as a selectively operable switch.
According to the invention further, photonic crystals may be formed within an optical fiber along with other photonic crystals, or other optical or electrooptical devices, so as to provide microoptical systems directly in the fiber. In further accord with the invention, a photonic crystal formed directly within an optical fiber may be associated with a photoelectric element, such as a photoresistive layer, so as to derive electrical signal outputs from the optical processing system within the fiber. On-fiber lenses may be used to transmit light to and from an in-fiber photonic crystal.
Other objects, features and advantages of the present invention will become more apparent in the light of the following detailed description of exemplary embodiments thereof, as illustrated in the accompanying drawing.
Brief Description of the Drawings Fig. 1 is a perspective view of a narrow band filter in a trench cut into a D-profile optical fiber, the photonic crystal comprises dielectric rods formed by three dimensional additive lithography.
Fig. 2 is a perspective view of a narrow band filter in which the photonic crystal is formed by creating substantially cylindrical holes directly in the optical fiber.
Fig. 3 is an end elevation view of a round optical fiber having an electrically variable photonic crystal disposed therein.
Fig. 4 is a side elevation view of the optical fiber and photonic crystal of Fig. 3.
Fig. 5 is a top plan view of a photonic crystal in an optical fiber having a lens formed on the periphery thereof.
In accordance with this invention, there is provided a photonic crystal formed directly in the path of light within an optical fiber having a longitudinal axis, said photonic crystal formed of elements of differing refractive index, normal to said axis.
According to the present invention, a photonic crystal is formed directly in the light path within an optical fiber, whereby light is directly coupled between the optical waveguide formed by the fiber and the optical signal processor formed by the photonic crystal. In accordance with one form of the invention, a slot or trench is formed from one peripheral edge of an optical fiber through a significant fraction of the fiber, including and beyond the core of the fiber, and the optical crystal is formed in that space, thereby being directly in the path of the light as it traverses the optical fiber. In the first embodiment, the photonic crystal may preferably be formed by dielectric rods produced, for instance, by three dimensional additive lithography, in a defined geometric pattern which determines the characteristics, wavelength and band width of the resulting photonic crystal device. According to the invention in another form, a photonic crystal is formed directly in an optical fiber by drilling substantially cylindrical columnar holes in a photonic crystal pattern, dependent upon the effect and wavelengths desired, directly 2a into the optical fiber, from one peripheral edge, through a significant fraction of the fiber including and beyond the core of the fiber.
In accordance with the invention, the interstices between the dielectric rods formed in a trench within an optical fiber contain a non-linear optical material, which has an electrically controllable or optically controllable dielectric constant, to provide wavelength-controllable photonic crystals, such as for use as a selectively operable switch.
According to the invention further, photonic crystals may be formed within an optical fiber along with other photonic crystals, or other optical or electrooptical devices, so as to provide microoptical systems directly in the fiber. In further accord with the invention, a photonic crystal formed directly within an optical fiber may be associated with a photoelectric element, such as a photoresistive layer, so as to derive electrical signal outputs from the optical processing system within the fiber. On-fiber lenses may be used to transmit light to and from an in-fiber photonic crystal.
Other objects, features and advantages of the present invention will become more apparent in the light of the following detailed description of exemplary embodiments thereof, as illustrated in the accompanying drawing.
Brief Description of the Drawings Fig. 1 is a perspective view of a narrow band filter in a trench cut into a D-profile optical fiber, the photonic crystal comprises dielectric rods formed by three dimensional additive lithography.
Fig. 2 is a perspective view of a narrow band filter in which the photonic crystal is formed by creating substantially cylindrical holes directly in the optical fiber.
Fig. 3 is an end elevation view of a round optical fiber having an electrically variable photonic crystal disposed therein.
Fig. 4 is a side elevation view of the optical fiber and photonic crystal of Fig. 3.
Fig. 5 is a top plan view of a photonic crystal in an optical fiber having a lens formed on the periphery thereof.
Fig. 6 is a top plan view of a photonic crystal in an optical fiber having a photoelectric layer disposed on the periphery thereof.
Fig. 7 is a perspective view of an optical fiber having a plurality of photonic crystals and other elements, such as a photoelectric layer and an index matching film, formed therein.
Best Mode for Carrying Out the Invention Referring now to Fig. 1, a photonic crystal 11 is formed within a trench 12 of an optical fiber 13 having a core 14. The photonic crystal 11 comprises a plurality of dielectric rods 16 arranged, in this case, in an l0 orthogonal matrix with a defect, in this case the absence of a dielectric rod, in the center 17 of the array. The photonic crystal 11 in the configuration shown, comprises a narrow band filter. In the general case, the interstices between the dielectric rod 16 may be backfilled with amorphous or microcrystalline polymer, if desired, for strength; but the invention may be practiced without backfilling, if desired. The trench 12 may extend along the length of the fiber 13 for a few microns. The trench may be formed in the fiber by means of lithography, dry or wet etching, or by laser or ion ablation.
In Fig. 1, the optical fiber 13 is a D-profile fiber in which the light is transmitted through the monomode core 14, close to the flat surface;
the initial D-profile of the fiber allows simple removal of material to form an adequate trench.
Referring to Fig. 2, another embodiment of the invention forms a photonic crystal 11 directly in the optical fiber 13 simply by drilling a plurality of substantially cylindrical holes 20 in the optical fiber material, in a defined geometric pattern. The photonic crystal 11 in Fig. 2 is a narrow band filter (similar to that of Fig. 1 ) the defect being the absence of a hole at the center 17 of the matrix. Thus, the invention is placing a photonic crystal directly in an optical fiber, and the manner of so doing is irrelevant to the invention.
Referring to Figs. 3 and 4, the photonic crystal 22 is formed in a round optical fiber 23. The photonic 5 crystal 22 may be formed in a trench 27 (as in Fig. 1) the interstices 28 between the dielectric rods 29 being partly or completely filled with non-linear optical material.
Prior to formation of the photonic crystals 22, an electrical layer 32 is provided in the bottom of the trench 27, substantially throughout the extent that the photonic crystal 22 will occupy. After filling with non-linear optical material, another electrical layer 33 is formed.
The layers 32 and 33 terminate externally in pads 34 to which electrical leads 35 may be wire bonded. By varying the electric field between the conductive layers 32, 33 the optical properties, particularly the refractive indexes, of the various parts of the photonic crystal 22 will be altered, thereby altering the characteristic or the critical wavelengths of the device, as set forth in German patent DE 196 34 893 A1. Figs. 3 and 4 also illustrate that the present invention, forming photonic crystals directly in optical fibers, may be practiced in round optical fibers as well as in D-profile optical fibers.
Instead of using electrodes and a varying voltage in order to tune the non-linear optical material, the non-linear optical material may be flooded with light, either from an external source utilizing lenses as in our prior copending application, or by illumination parallel with and exterior of the core of the optic fiber, similar to that in optically pumped fiber lasers, in a well known way.
Referring to Fig. 5, a photonic crystal 40 is formed within a trench 41 of an optical fiber 42 which has a core 43. The photonic crystal 40 comprises columns of refractive index difference 45 which may comprise either dielectric rods (16 in Fig. 1) or holes (20, Fig. 2), represented in Fig. 5 as empty circles. The defects are indicated in Fig. 5 as circles 46 with lines through them.
The pattern of Fig. 5 is not intended to represent any particular function, but merely be illustrative of photonic crystals in general. However, such a pattern can be presented that will provide a drop function (or, since the optics are reversible, an add function) in which light at a particular frequency Ai is allowed to be steered through a right angle to pass through a lens 48 formed directly on the side of the optical fiber 42, utilizing the dry-resist method disclosed in United States Patent 6,291,139B or utilizing principles of Canadian patent application CA 2,282,519 (published October 8, 1998). Selected light passing out of (or into) the photonic crystal 40 through the lens 48 will be fed through a similar lens on the side of another optical fiber into such other optical fiber, or it may be focused on the end of an optical fiber, or the like.
The manner of utilizing light processed by a photonic crystal is irrelevant to the invention; the invention being the placement of the photonic crystal directly in an optical fiber.
Referring to Fig. 6, another method for utilizing light processed by a photonic crystal includes a photoresistive layer 50, formed at the edge of the optical fiber 42, electrically in contact with pads 51 to which electrical leads 52 may be wire bonded. Thus, electrical signals indicative of the intensity of the wavelength extracted by the photonic crystal 40 are provided by the photoresistive layer 50, as disclosed in Canadian Patent 2,255,862.
6a Referring to Fig. 7, a D-profile optical fiber 56 having a core 57 therein is provided with a plurality of photonic crystals 58, 59 as well as a photoresistive layer 60 directly in the path of light, within the optical fiber 56. In this case, the photoresistive layer 60 will measure the magnitude of light that remains in the fiber. The electrical leads for the layer 60 are omitted in Fig. 7 for clarity. More importantly, an additional _ 7 _ coating or layer 61 of photonic rod material, such as a suitable, properly doped polymer, may provide special attenuating or moderating functions, particularly index matching to reduce reflections at a fiber/crystal interface. Such layers may also be behind the crystal (where the layer 60 is shown) or between crystals. The present invention, forming the photonic crystals either singly, or in combination with other photonic crystals or optical or optoelectric elements or layers directly within an optical fiber, can be combined in very complex ways by provision of such optical devices in two or more optical fibers, selectively coupling light therebetween and in some instances recombining the light after separate processing. For instance, optical metrology devices may be formed of multiple photonic crystals and non-linear optical devices as well as photo-resistors to measure various characteristics of the light in the fiber, such as polarization, amplitude and pulse sequence, etc.
Stated another way, the invention provides the means, photonic crystals within fiber optics, to produce very complex optical systems in a microminiaturized form.
Fig. 7 is a perspective view of an optical fiber having a plurality of photonic crystals and other elements, such as a photoelectric layer and an index matching film, formed therein.
Best Mode for Carrying Out the Invention Referring now to Fig. 1, a photonic crystal 11 is formed within a trench 12 of an optical fiber 13 having a core 14. The photonic crystal 11 comprises a plurality of dielectric rods 16 arranged, in this case, in an l0 orthogonal matrix with a defect, in this case the absence of a dielectric rod, in the center 17 of the array. The photonic crystal 11 in the configuration shown, comprises a narrow band filter. In the general case, the interstices between the dielectric rod 16 may be backfilled with amorphous or microcrystalline polymer, if desired, for strength; but the invention may be practiced without backfilling, if desired. The trench 12 may extend along the length of the fiber 13 for a few microns. The trench may be formed in the fiber by means of lithography, dry or wet etching, or by laser or ion ablation.
In Fig. 1, the optical fiber 13 is a D-profile fiber in which the light is transmitted through the monomode core 14, close to the flat surface;
the initial D-profile of the fiber allows simple removal of material to form an adequate trench.
Referring to Fig. 2, another embodiment of the invention forms a photonic crystal 11 directly in the optical fiber 13 simply by drilling a plurality of substantially cylindrical holes 20 in the optical fiber material, in a defined geometric pattern. The photonic crystal 11 in Fig. 2 is a narrow band filter (similar to that of Fig. 1 ) the defect being the absence of a hole at the center 17 of the matrix. Thus, the invention is placing a photonic crystal directly in an optical fiber, and the manner of so doing is irrelevant to the invention.
Referring to Figs. 3 and 4, the photonic crystal 22 is formed in a round optical fiber 23. The photonic 5 crystal 22 may be formed in a trench 27 (as in Fig. 1) the interstices 28 between the dielectric rods 29 being partly or completely filled with non-linear optical material.
Prior to formation of the photonic crystals 22, an electrical layer 32 is provided in the bottom of the trench 27, substantially throughout the extent that the photonic crystal 22 will occupy. After filling with non-linear optical material, another electrical layer 33 is formed.
The layers 32 and 33 terminate externally in pads 34 to which electrical leads 35 may be wire bonded. By varying the electric field between the conductive layers 32, 33 the optical properties, particularly the refractive indexes, of the various parts of the photonic crystal 22 will be altered, thereby altering the characteristic or the critical wavelengths of the device, as set forth in German patent DE 196 34 893 A1. Figs. 3 and 4 also illustrate that the present invention, forming photonic crystals directly in optical fibers, may be practiced in round optical fibers as well as in D-profile optical fibers.
Instead of using electrodes and a varying voltage in order to tune the non-linear optical material, the non-linear optical material may be flooded with light, either from an external source utilizing lenses as in our prior copending application, or by illumination parallel with and exterior of the core of the optic fiber, similar to that in optically pumped fiber lasers, in a well known way.
Referring to Fig. 5, a photonic crystal 40 is formed within a trench 41 of an optical fiber 42 which has a core 43. The photonic crystal 40 comprises columns of refractive index difference 45 which may comprise either dielectric rods (16 in Fig. 1) or holes (20, Fig. 2), represented in Fig. 5 as empty circles. The defects are indicated in Fig. 5 as circles 46 with lines through them.
The pattern of Fig. 5 is not intended to represent any particular function, but merely be illustrative of photonic crystals in general. However, such a pattern can be presented that will provide a drop function (or, since the optics are reversible, an add function) in which light at a particular frequency Ai is allowed to be steered through a right angle to pass through a lens 48 formed directly on the side of the optical fiber 42, utilizing the dry-resist method disclosed in United States Patent 6,291,139B or utilizing principles of Canadian patent application CA 2,282,519 (published October 8, 1998). Selected light passing out of (or into) the photonic crystal 40 through the lens 48 will be fed through a similar lens on the side of another optical fiber into such other optical fiber, or it may be focused on the end of an optical fiber, or the like.
The manner of utilizing light processed by a photonic crystal is irrelevant to the invention; the invention being the placement of the photonic crystal directly in an optical fiber.
Referring to Fig. 6, another method for utilizing light processed by a photonic crystal includes a photoresistive layer 50, formed at the edge of the optical fiber 42, electrically in contact with pads 51 to which electrical leads 52 may be wire bonded. Thus, electrical signals indicative of the intensity of the wavelength extracted by the photonic crystal 40 are provided by the photoresistive layer 50, as disclosed in Canadian Patent 2,255,862.
6a Referring to Fig. 7, a D-profile optical fiber 56 having a core 57 therein is provided with a plurality of photonic crystals 58, 59 as well as a photoresistive layer 60 directly in the path of light, within the optical fiber 56. In this case, the photoresistive layer 60 will measure the magnitude of light that remains in the fiber. The electrical leads for the layer 60 are omitted in Fig. 7 for clarity. More importantly, an additional _ 7 _ coating or layer 61 of photonic rod material, such as a suitable, properly doped polymer, may provide special attenuating or moderating functions, particularly index matching to reduce reflections at a fiber/crystal interface. Such layers may also be behind the crystal (where the layer 60 is shown) or between crystals. The present invention, forming the photonic crystals either singly, or in combination with other photonic crystals or optical or optoelectric elements or layers directly within an optical fiber, can be combined in very complex ways by provision of such optical devices in two or more optical fibers, selectively coupling light therebetween and in some instances recombining the light after separate processing. For instance, optical metrology devices may be formed of multiple photonic crystals and non-linear optical devices as well as photo-resistors to measure various characteristics of the light in the fiber, such as polarization, amplitude and pulse sequence, etc.
Stated another way, the invention provides the means, photonic crystals within fiber optics, to produce very complex optical systems in a microminiaturized form.
Claims (15)
1. A photonic crystal formed directly in the path of light within an optical fiber having a longitudinal axis, said photonic crystal formed of elements of differing refractive index, normal to said axis.
2. A photonic crystal according to claim 1 wherein said photonic crystal comprises a plurality of dielectric rods formed in a trench within said optical fiber.
3. A photonic crystal according to claim 2 wherein the interstices between said dielectric rods is filled with amorphous polymer material for support.
4. A photonic crystal according to claim 2 wherein the interstices between said dielectric rods contain a non-linear optical material.
5. A photonic crystal according to claim 4 further comprising a pair of electrodes disposed near opposite ends of said dielectric rods, for applying an electric field to said non-linear optical material, thereby to vary the characteristics of said photonic crystal.
6. The photonic crystal according to claim 4 wherein the characteristics of said photonic crystal are modified by selective illumination of said non-linear optical material with light.
7. The photonic crystal according to claim 1 wherein said photonic crystal is formed by providing holes in a desired pattern which includes the path of light in said optical fiber.
8. A photonic crystal according to claim 1 including a photoresistive layer for sensing the magnitude of light passing through a portion of said photonic crystal.
9. A photonic crystal according to claim 8 wherein said photoresistive layer is formed on a surface of said optical fiber to measure the magnitude of light passing between said surface and a portion of said photonic crystal.
10. A photonic crystal according to claim 8 wherein said photoresistive layer is formed directly within the path of light within said optical fiber.
11. A photonic crystal according to claim 1 wherein said optical fiber includes a second photonic crystal formed in said optical fiber adjacent to said first named photonic crystal.
12. A photonic crystal according to claim 1 including a lens for focusing light passing between the surface of said optical fiber and a portion of said photonic crystal.
13. A photonic crystal according to claim 1 including a layer of photonic rod material at an interface between said crystal and said fiber in said path of light.
14. A photonic crystal according to claim 1 wherein said optical fiber is a D-profile fiber.
15. A photonic crystal according to claim 1 wherein said optical fiber is a round profile fiber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19713371 | 1997-03-29 | ||
| DE19713371.1 | 1997-03-29 | ||
| PCT/DE1998/000905 WO1998044367A1 (en) | 1997-03-29 | 1998-03-26 | Fiber-integrated photon crystals and systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2282517A1 CA2282517A1 (en) | 1998-10-08 |
| CA2282517C true CA2282517C (en) | 2006-08-29 |
Family
ID=7825103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002282517A Expired - Fee Related CA2282517C (en) | 1997-03-29 | 1998-03-26 | In-fiber photonic crystals and systems |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6075915A (en) |
| EP (1) | EP0970396B1 (en) |
| JP (1) | JP3443124B2 (en) |
| AT (1) | ATE277361T1 (en) |
| AU (1) | AU8008198A (en) |
| CA (1) | CA2282517C (en) |
| DE (2) | DE19880399D2 (en) |
| WO (1) | WO1998044367A1 (en) |
Families Citing this family (87)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6563589B1 (en) | 1996-04-19 | 2003-05-13 | Kvh Industries, Inc. | Reduced minimum configuration fiber optic current sensor |
| GB9710062D0 (en) * | 1997-05-16 | 1997-07-09 | British Tech Group | Optical devices and methods of fabrication thereof |
| DE19745324C2 (en) * | 1997-10-14 | 1999-09-16 | Deutsche Telekom Ag | Method and device for wavelength-selective mixing and / or distribution of polychromatic light |
| US6891622B2 (en) | 1999-02-11 | 2005-05-10 | Kvh Industries, Inc. | Current sensor |
| US6539134B1 (en) | 1999-02-11 | 2003-03-25 | Kvh Industries, Inc. | Polarization transformer |
| GB9911698D0 (en) | 1999-05-20 | 1999-07-21 | Univ Southampton | Developing holey fibers for evanescent field devices |
| US6236779B1 (en) | 1999-05-24 | 2001-05-22 | Spectra Physics Lasers, Inc. | Photonic crystal fiber system for sub-picosecond pulses |
| US6301421B1 (en) * | 1999-05-27 | 2001-10-09 | Trw Inc. | Photonic crystal fiber lasers and amplifiers for high power |
| JP4161498B2 (en) | 1999-12-28 | 2008-10-08 | コニカミノルタホールディングス株式会社 | Manufacturing method of optical module |
| US6370289B1 (en) | 2000-01-12 | 2002-04-09 | Kvh Industries, Inc. | Apparatus and method for electronic RIN reduction in fiber-optic sensors |
| JP2001281714A (en) | 2000-01-24 | 2001-10-10 | Minolta Co Ltd | Optical functional device and optical integrated device |
| US6703821B2 (en) | 2000-02-28 | 2004-03-09 | Kvh Industries, Inc. | Faraday-effect current sensor with improved vibration response |
| DE10106297A1 (en) | 2000-06-08 | 2002-01-03 | Schleifring Und Appbau Gmbh | Optical data transmission system |
| DE60133970D1 (en) | 2000-06-21 | 2008-06-26 | Matsushita Electric Ind Co Ltd | Optical fiber with photonic bandgap structure |
| US6594020B2 (en) | 2000-07-13 | 2003-07-15 | Kvh Industries, Inc | Method for controlling fiber optic sensor scale factor using amplitude modulation |
| WO2002006867A2 (en) | 2000-07-18 | 2002-01-24 | Kvh Industries, Inc. | Method of incorporating optical material into an optical fiber |
| WO2002023237A2 (en) | 2000-08-02 | 2002-03-21 | Kvh Industries, Inc. | Decreasing the effects of linear birefringence in a fiber-optic sensor by use of berry's topological phase |
| WO2002010813A2 (en) * | 2000-08-02 | 2002-02-07 | Kvh Industries, Inc. | Reduction of linear birefringence in circular-core single-mode fiber |
| US6674949B2 (en) * | 2000-08-15 | 2004-01-06 | Corning Incorporated | Active photonic crystal waveguide device and method |
| AU2001283369A1 (en) * | 2000-08-15 | 2002-02-25 | Corning Incorporated | Active photonic crystal waveguide device |
| JP3923244B2 (en) * | 2000-09-01 | 2007-05-30 | 富士フイルム株式会社 | Optical element |
| JP3586635B2 (en) * | 2000-10-19 | 2004-11-10 | 株式会社日立製作所 | Optical devices and substrates |
| DE20021834U1 (en) * | 2000-12-22 | 2001-03-15 | Schleifring Und App Bau Gmbh | Device for coupling light into a light-conducting layer within a hybrid electrical-optical circuit board |
| US6470127B2 (en) * | 2001-01-31 | 2002-10-22 | Intelligent Optical Systems, Inc. | Photonic band-gap light-emitting fibers |
| US6512871B2 (en) | 2001-02-12 | 2003-01-28 | Gazillion Bits, Inc. | Dispersion compensating fiber with void pattern in secondary core |
| JP2002303836A (en) | 2001-04-04 | 2002-10-18 | Nec Corp | Optical switch with photonic crystal structure |
| WO2002084345A1 (en) * | 2001-04-12 | 2002-10-24 | Omniguide Communications | High index-contrast fiber waveguides and applications |
| JP4611573B2 (en) * | 2001-06-15 | 2011-01-12 | 浜松ホトニクス株式会社 | Method for forming light control unit |
| DE10132850A1 (en) * | 2001-07-06 | 2003-01-23 | Fraunhofer Ges Forschung | Deflection device and method for deflecting electromagnetic waves and optical element therefor, and method for producing photonic structures |
| US6542654B1 (en) | 2001-07-10 | 2003-04-01 | Optical Switch Corporation | Reconfigurable optical switch and method |
| US6794265B2 (en) * | 2001-08-02 | 2004-09-21 | Ultradots, Inc. | Methods of forming quantum dots of Group IV semiconductor materials |
| US7005669B1 (en) | 2001-08-02 | 2006-02-28 | Ultradots, Inc. | Quantum dots, nanocomposite materials with quantum dots, devices with quantum dots, and related fabrication methods |
| US6710366B1 (en) | 2001-08-02 | 2004-03-23 | Ultradots, Inc. | Nanocomposite materials with engineered properties |
| US20030066998A1 (en) * | 2001-08-02 | 2003-04-10 | Lee Howard Wing Hoon | Quantum dots of Group IV semiconductor materials |
| US6819845B2 (en) | 2001-08-02 | 2004-11-16 | Ultradots, Inc. | Optical devices with engineered nonlinear nanocomposite materials |
| US6637571B2 (en) * | 2001-08-31 | 2003-10-28 | Reell Precision Manufacturing Corporation | Input engaging clutch |
| US6836334B2 (en) * | 2001-10-31 | 2004-12-28 | Kvh Industries, Inc. | Angle random walk (ARW) noise reduction in fiber optic sensors using an optical amplifier |
| US7039285B2 (en) * | 2001-12-13 | 2006-05-02 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing photonic crystal, mask, method of manufacturing mask and method of manufacturing optical device |
| US6760514B2 (en) * | 2002-02-27 | 2004-07-06 | Agilent Technologies, Inc. | Continuously tunable photonic crystal drop filter |
| AU2002242509A1 (en) * | 2002-03-05 | 2003-09-16 | Institut National D'optique | Microporous glass waveguides doped with selected materials |
| US6751387B2 (en) * | 2002-03-05 | 2004-06-15 | Institut National D'optique | Microporous glass waveguides doped with selected materials |
| JP3739328B2 (en) * | 2002-03-13 | 2006-01-25 | 株式会社日立製作所 | Photonic crystal element |
| US6763153B2 (en) * | 2002-04-17 | 2004-07-13 | Kvh Industries, Inc. | Apparatus and method for electronic RIN reduction in fiber-optic sensors utilizing filter with group delay |
| US6876784B2 (en) * | 2002-05-30 | 2005-04-05 | Nanoopto Corporation | Optical polarization beam combiner/splitter |
| US6947649B2 (en) * | 2002-05-31 | 2005-09-20 | Matsushita Electric Industrial Co., Ltd. | Method of adjusting the index of refraction of photonic crystals with laser micromachining to tune transmissions within the bandgap and structure |
| US7386205B2 (en) * | 2002-06-17 | 2008-06-10 | Jian Wang | Optical device and method for making same |
| US20040047039A1 (en) * | 2002-06-17 | 2004-03-11 | Jian Wang | Wide angle optical device and method for making same |
| US7283571B2 (en) * | 2002-06-17 | 2007-10-16 | Jian Wang | Method and system for performing wavelength locking of an optical transmission source |
| EP1520203A4 (en) | 2002-06-18 | 2005-08-24 | Nanoopto Corp | Optical components exhibiting enhanced functionality and method of making same |
| AUPS328402A0 (en) * | 2002-06-28 | 2002-07-18 | Australian Photonics Pty Limited | Writing of photo-induced structures |
| US20040013384A1 (en) * | 2002-07-17 | 2004-01-22 | Greg Parker | Optical waveguide structure |
| US7050233B2 (en) | 2002-08-01 | 2006-05-23 | Nanoopto Corporation | Precision phase retardation devices and method of making same |
| US7272272B2 (en) * | 2002-10-01 | 2007-09-18 | Canon Kabushiki Kaisha | Optical deflector based on photonic bandgap structure |
| US6920272B2 (en) * | 2002-10-09 | 2005-07-19 | Nanoopto Corporation | Monolithic tunable lasers and reflectors |
| US7013064B2 (en) * | 2002-10-09 | 2006-03-14 | Nanoopto Corporation | Freespace tunable optoelectronic device and method |
| DE10250216B3 (en) * | 2002-10-23 | 2004-04-29 | IFG-Institut für Gerätebau GmbH | Photonic fiber with central region and surrounding channels, includes two metallic conductors running close to and along central fiber |
| GB0224727D0 (en) * | 2002-10-24 | 2002-12-04 | Holset Engineering Co | Compressor wheel assembly |
| US20040086244A1 (en) | 2002-11-05 | 2004-05-06 | Zoorob Majd E. | Optical waveguide structure |
| EP1567893A4 (en) * | 2002-11-22 | 2007-09-19 | Omniguide Inc | Dielectric waveguide and method of making the same |
| US7268946B2 (en) * | 2003-02-10 | 2007-09-11 | Jian Wang | Universal broadband polarizer, devices incorporating same, and method of making same |
| US20040258355A1 (en) * | 2003-06-17 | 2004-12-23 | Jian Wang | Micro-structure induced birefringent waveguiding devices and methods of making same |
| DE10340964A1 (en) * | 2003-09-05 | 2005-03-31 | Leica Microsystems Heidelberg Gmbh | Light source with a microstructured optical element |
| US6996317B2 (en) * | 2003-10-23 | 2006-02-07 | Fitel U.S.A. Corp. | Optical devices including microstructured fiber sections disposed for transverse signal propagation |
| US7427798B2 (en) * | 2004-07-08 | 2008-09-23 | Micron Technology, Inc. | Photonic crystal-based lens elements for use in an image sensor |
| US7376307B2 (en) * | 2004-10-29 | 2008-05-20 | Matsushita Electric Industrial Co., Ltd | Multimode long period fiber bragg grating machined by ultrafast laser direct writing |
| JP4284540B2 (en) * | 2004-11-04 | 2009-06-24 | 独立行政法人産業技術総合研究所 | Optical buffer memory |
| CN100354667C (en) * | 2005-02-03 | 2007-12-12 | 中国科学院半导体研究所 | Photon crystal filter based on mixing integration |
| US20060193578A1 (en) * | 2005-02-28 | 2006-08-31 | Ouderkirk Andrew J | Composite polymeric optical films with co-continuous phases |
| US7406239B2 (en) * | 2005-02-28 | 2008-07-29 | 3M Innovative Properties Company | Optical elements containing a polymer fiber weave |
| US7356231B2 (en) * | 2005-02-28 | 2008-04-08 | 3M Innovative Properties Company | Composite polymer fibers |
| US7386212B2 (en) * | 2005-02-28 | 2008-06-10 | 3M Innovative Properties Company | Polymer photonic crystal fibers |
| US7356229B2 (en) * | 2005-02-28 | 2008-04-08 | 3M Innovative Properties Company | Reflective polarizers containing polymer fibers |
| US7362943B2 (en) * | 2005-02-28 | 2008-04-22 | 3M Innovative Properties Company | Polymeric photonic crystals with co-continuous phases |
| US7773834B2 (en) | 2006-08-30 | 2010-08-10 | 3M Innovative Properties Company | Multilayer polarizing fibers and polarizers using same |
| US7599592B2 (en) * | 2006-08-30 | 2009-10-06 | 3M Innovative Properties Company | Polymer fiber polarizers with aligned fibers |
| US20080057277A1 (en) * | 2006-08-30 | 2008-03-06 | 3M Innovative Properties Company | Polymer fiber polarizers |
| US8003280B1 (en) * | 2007-10-17 | 2011-08-23 | Robert Andrew Marshall | System and method for holographic lithographic production of a photonic crystal |
| WO2011046875A1 (en) | 2009-10-12 | 2011-04-21 | Nadia Pervez | Photonic crystal spectrometer |
| US9482927B2 (en) | 2009-10-26 | 2016-11-01 | The Boeing Company | Optical sensor interrogation system |
| US8160412B2 (en) * | 2009-12-08 | 2012-04-17 | The Hong Kong Polytechnic University | Microhole-structured long period fiber grating |
| US9086331B2 (en) * | 2012-10-23 | 2015-07-21 | The Boeing Company | Optical fiber coupled photonic crystal slab strain sensor system |
| USD758372S1 (en) | 2013-03-13 | 2016-06-07 | Nagrastar Llc | Smart card interface |
| US9888283B2 (en) | 2013-03-13 | 2018-02-06 | Nagrastar Llc | Systems and methods for performing transport I/O |
| DE102013011963B4 (en) * | 2013-07-15 | 2018-06-07 | Leibniz-Institut für Photonische Technologien e. V. | sensor element |
| USD864968S1 (en) | 2015-04-30 | 2019-10-29 | Echostar Technologies L.L.C. | Smart card interface |
| CN105356212B (en) * | 2015-12-22 | 2018-10-09 | 华中科技大学 | A kind of optical fiber laser including inside of optical fibre lattice structure optical fibre device |
| US11243071B2 (en) * | 2020-02-03 | 2022-02-08 | The Boeing Company | Sub-surface patterning for diffraction-based strain measurement and damage detection in structures |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5802236A (en) * | 1997-02-14 | 1998-09-01 | Lucent Technologies Inc. | Article comprising a micro-structured optical fiber, and method of making such fiber |
-
1998
- 1998-03-26 EP EP98928091A patent/EP0970396B1/en not_active Expired - Lifetime
- 1998-03-26 CA CA002282517A patent/CA2282517C/en not_active Expired - Fee Related
- 1998-03-26 JP JP54106598A patent/JP3443124B2/en not_active Expired - Fee Related
- 1998-03-26 AU AU80081/98A patent/AU8008198A/en not_active Abandoned
- 1998-03-26 AT AT98928091T patent/ATE277361T1/en active
- 1998-03-26 DE DE19880399T patent/DE19880399D2/en not_active Ceased
- 1998-03-26 DE DE59811997T patent/DE59811997D1/en not_active Expired - Lifetime
- 1998-03-26 WO PCT/DE1998/000905 patent/WO1998044367A1/en active IP Right Grant
- 1998-03-26 US US09/048,508 patent/US6075915A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE277361T1 (en) | 2004-10-15 |
| WO1998044367A1 (en) | 1998-10-08 |
| JP2001516469A (en) | 2001-09-25 |
| US6075915A (en) | 2000-06-13 |
| EP0970396A1 (en) | 2000-01-12 |
| EP0970396B1 (en) | 2004-09-22 |
| DE59811997D1 (en) | 2004-10-28 |
| DE19880399D2 (en) | 2000-09-07 |
| CA2282517A1 (en) | 1998-10-08 |
| JP3443124B2 (en) | 2003-09-02 |
| AU8008198A (en) | 1998-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2282517C (en) | In-fiber photonic crystals and systems | |
| US6011881A (en) | Fiber-optic tunable filter | |
| US3814498A (en) | Integrated optical circuit devices employing optical gratings | |
| US6026205A (en) | Compound optical waveguide and filter applications thereof | |
| US5937115A (en) | Switchable optical components/structures and methods for the fabrication thereof | |
| US3931518A (en) | Optical fiber power taps employing mode coupling means | |
| US4557552A (en) | Microbend optical fiber tapped delay line | |
| US6795616B2 (en) | Control of guided light in a waveguide | |
| DE60318762T2 (en) | Fiber-to-waveguide coupler with diffraction grating for polarization-maintaining optical integrated circuits | |
| KR900008598B1 (en) | Optical fiber bidirectional data bustap | |
| EP2080046B1 (en) | Photonic-based interconnects for interconnecting multiple integrated circuits | |
| EP1048971A1 (en) | MMI Thermo-optic coupler | |
| US7881571B2 (en) | Coupling device with compensated birefringence | |
| KR100318041B1 (en) | Grating element, light wavelength selection utilizing the same, and optical signal transmitting system | |
| US20030059195A1 (en) | Optical devices using shaped optical fibers and methods for making optical devices with shaped optical fibers | |
| EP0869377A1 (en) | Integrated optical element with polarization effect | |
| US6393191B1 (en) | Optical terminal for optical fibers with output angle control | |
| EP0143583A2 (en) | Fiber optic modal coupler | |
| CA2326893A1 (en) | Method and device for reducing polarization dependence in an optical component or optical system | |
| US20020041733A1 (en) | Method and device for reducing polarization dependence in an optical component or optical system | |
| KR101863755B1 (en) | Fiber-optic device, wavelength selecting apparatus, measuring apparatus and method for manufacturing fiber-optic device | |
| Marin et al. | Bragg gratings in 2 x 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response | |
| JP3011140B2 (en) | Fiber type optical isolator and method of manufacturing the same | |
| Liou et al. | Design and fabrication of ring resonator spectral response through-drop wavelengths selective | |
| KR102320441B1 (en) | Optical intensity modulator and optical module using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150326 |