CA2054337A1 - Apparatus and method for externally modulating an optical carrier - Google Patents
Apparatus and method for externally modulating an optical carrierInfo
- Publication number
- CA2054337A1 CA2054337A1 CA002054337A CA2054337A CA2054337A1 CA 2054337 A1 CA2054337 A1 CA 2054337A1 CA 002054337 A CA002054337 A CA 002054337A CA 2054337 A CA2054337 A CA 2054337A CA 2054337 A1 CA2054337 A1 CA 2054337A1
- Authority
- CA
- Canada
- Prior art keywords
- modulator
- electrodes
- polarity
- mach zehnder
- zehnder modulator
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
Classifications
-
- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/31—Digital deflection, i.e. optical switching
- G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
- G02F1/3136—Digital deflection, i.e. optical switching in an optical waveguide structure of interferometric switch type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
-
- 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
- G02F2203/00—Function characteristic
- G02F2203/19—Function characteristic linearised modulation; reduction of harmonic distortions
Abstract
An external electrooptic modulator is provided offering high linearity and low intermodulation distortion. A Mach Zehnder modulator is followed by a directional coupler. The Mach Zehnder modulator is modulated with a first pair of electrodes at a first polarity. The modulating signal is scaled by a factor .pi. and applied to a separate pair of electrodes for the directional coupler at a second polarity opposite to the first polarity. Separate DC bias electrodes can be provided in the Mach Zehnder modulator. The modulator is particularly appropriate for use in optical transmission systems for cable television applications.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/609,808 US5119447A (en) | 1990-11-06 | 1990-11-06 | Apparatus and method for externally modulating an optical carrier |
US07/609,808 | 1990-11-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2054337A1 true CA2054337A1 (en) | 1992-05-07 |
CA2054337C CA2054337C (en) | 2001-03-27 |
Family
ID=24442423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002054337A Expired - Fee Related CA2054337C (en) | 1990-11-06 | 1991-10-28 | Apparatus and method for externally modulating an optical carrier |
Country Status (8)
Country | Link |
---|---|
US (1) | US5119447A (en) |
EP (1) | EP0484791B1 (en) |
JP (1) | JP2698797B2 (en) |
CA (1) | CA2054337C (en) |
DE (1) | DE69111184T2 (en) |
HK (1) | HK90397A (en) |
MX (1) | MX9101952A (en) |
NO (1) | NO306082B1 (en) |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2670589B1 (en) * | 1990-12-14 | 1994-04-15 | Thomson Csf | INTEGRATED ELECTROOPTIC MODULATION DEVICE. |
SE468267B (en) * | 1991-04-10 | 1992-11-30 | Ericsson Telefon Ab L M | TERMINAL FOR A FREQUENCY PART, OPTICAL COMMUNICATION SYSTEM |
JPH0534650A (en) * | 1991-05-10 | 1993-02-12 | Fujitsu Ltd | Branch interference type optical modulator provided with monitor |
FR2685834B1 (en) * | 1991-12-31 | 1995-03-31 | France Telecom | LONG DISTANCE DIGITAL TRANSMISSION SYSTEM ON OPTICAL FIBER WITH DISTORTION COMPENSATION. |
FR2685835A1 (en) * | 1991-12-31 | 1993-07-02 | France Telecom | VERY LONG DISTANCE TRANSMISSION SYSTEM ON OPTICAL FIBER COMPENSATED FOR DISTORTIONS AT RECEPTION. |
US5323406A (en) * | 1992-11-02 | 1994-06-21 | Yee Ting K | Photonic mixer for photonically multiplying two electrical signals in two optically interconnected interferometric modulators operated at modulation outside the linear range |
US5347601A (en) * | 1993-03-29 | 1994-09-13 | United Technologies Corporation | Integrated optical receiver/transmitter |
US5600473A (en) * | 1993-06-04 | 1997-02-04 | Ciena Corporation | Optical amplifier systems with add/drop multiplexing |
US5579143A (en) * | 1993-06-04 | 1996-11-26 | Ciena Corporation | Optical system with tunable in-fiber gratings |
DE4427523C1 (en) * | 1994-08-03 | 1996-01-11 | Iot Integrierte Optik Gmbh | Asymmetric integrated optical Mach-Zehnder interferometer |
US5502782A (en) * | 1995-01-09 | 1996-03-26 | Optelecom, Inc. | Focused acoustic wave fiber optic reflection modulator |
US5875048A (en) * | 1995-03-06 | 1999-02-23 | Cfx Communication Systems,Llc | Linear multi-output optical transmitter system |
US5710653A (en) * | 1995-03-06 | 1998-01-20 | Fiber Optic Network Solutions Corp. | Linear multi-output optical transmitter system |
US5515463A (en) * | 1995-03-10 | 1996-05-07 | Hewlett-Packard Company | Multi-branch microwave line for electro-optical devices |
GB9523731D0 (en) | 1995-11-20 | 1996-01-24 | British Telecomm | Optical transmitter |
US5953139A (en) * | 1996-03-06 | 1999-09-14 | Cfx Communications Systems, Llc | Wavelength division multiplexing system |
FR2762944B1 (en) * | 1997-04-30 | 1999-05-28 | France Telecom | ELECTRICAL-OPTICAL CONVERTER CAPABLE OF PRODUCING AN OPTICAL SPECTRUM WITH A SINGLE SIDEBAND |
US6204951B1 (en) | 1997-05-21 | 2001-03-20 | Keotrel Solutions, Inc. | Electro-optic modulator with improved harmonic performance |
US6151157A (en) * | 1997-06-30 | 2000-11-21 | Uniphase Telecommunications Products, Inc. | Dynamic optical amplifier |
US5982964A (en) * | 1997-06-30 | 1999-11-09 | Uniphase Corporation | Process for fabrication and independent tuning of multiple integrated optical directional couplers on a single substrate |
US5915052A (en) * | 1997-06-30 | 1999-06-22 | Uniphase Telecommunications Products, Inc. | Loop status monitor for determining the amplitude of the signal components of a multi-wavelength optical beam |
US6370290B1 (en) | 1997-09-19 | 2002-04-09 | Uniphase Corporation | Integrated wavelength-select transmitter |
US6031849A (en) * | 1997-11-14 | 2000-02-29 | Jds Uniphase Corporation | High power three level fiber laser and method of making same |
US6020986A (en) * | 1997-11-21 | 2000-02-01 | Jds Uniphase Corporation | Programmable add-drop module for use in an optical circuit |
US6282332B1 (en) | 1998-06-04 | 2001-08-28 | Pirelli Cavi E Sistemi S.P.A. | Waveguide structures in particular for use in acousto-optical mode converters and method for making same |
CA2273646A1 (en) | 1998-06-04 | 1999-12-04 | Carlo Carmannini | Method of manufacturing indiffused optical waveguide structures in a substrate |
JP3600495B2 (en) * | 1999-08-06 | 2004-12-15 | ソニー株式会社 | Plasma address display |
US6292598B1 (en) | 1998-11-04 | 2001-09-18 | Corvis Corporation | Optical transmission apparatuses, methods, and systems |
US6529305B1 (en) | 1998-11-04 | 2003-03-04 | Corvis Corporation | Optical transmission apparatuses, methods, and systems |
US6118566A (en) * | 1998-11-04 | 2000-09-12 | Corvis Corporation | Optical upconverter apparatuses, methods, and systems |
US6310990B1 (en) | 2000-03-16 | 2001-10-30 | Cidra Corporation | Tunable optical structure featuring feedback control |
US7079780B1 (en) | 1999-05-28 | 2006-07-18 | Northrop Grumman Corporation | Linearized optical link using a single Mach-Zehnder modulator and two optical carriers |
JP3703013B2 (en) * | 2001-01-26 | 2005-10-05 | 日本電信電話株式会社 | Interferometer optical circuit and manufacturing method thereof |
US6525682B2 (en) | 2001-05-03 | 2003-02-25 | Hrl Laboratories, Llc | Photonic parallel analog-to-digital converter |
US6628849B2 (en) * | 2001-05-03 | 2003-09-30 | Hrl Laboratories, Llc | Photonic encoding sampler |
US7142788B2 (en) | 2002-04-16 | 2006-11-28 | Corvis Corporation | Optical communications systems, devices, and methods |
GB2407644B (en) * | 2003-10-28 | 2007-06-20 | Filtronic Plc | A coplanar waveguide line |
US7342467B2 (en) * | 2004-06-30 | 2008-03-11 | Harris Stratex Networks, Inc. | Variable power coupling device |
GB2426073A (en) * | 2005-05-11 | 2006-11-15 | Filtronic Plc | Optical modulator |
US7499603B1 (en) | 2006-01-19 | 2009-03-03 | Lockheed Martin Corporation | Range extended electrooptic modulator |
JP2007248850A (en) * | 2006-03-16 | 2007-09-27 | Oki Electric Ind Co Ltd | Mach-zehnder type semiconductor element and control method thereof |
JP2012118272A (en) * | 2010-11-30 | 2012-06-21 | Sumitomo Electric Ind Ltd | Optical modulation device, control method of optical modulator and control device of optical modulator |
JP2013122546A (en) * | 2011-12-12 | 2013-06-20 | Sumitomo Electric Ind Ltd | Semiconductor optical phase modulator and method for driving the same |
WO2017159651A1 (en) * | 2016-03-18 | 2017-09-21 | 日本電信電話株式会社 | Optical modulator |
CN112769492A (en) | 2019-10-21 | 2021-05-07 | 富士通株式会社 | Method and device for monitoring modulation depth of direct current bias jitter signal and optical transmitter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3381358D1 (en) * | 1983-08-26 | 1990-04-26 | Hughes Aircraft Co | ELECTRO-OPTICAL FILTER DEVICE. |
US4776657A (en) * | 1986-03-25 | 1988-10-11 | Tektronix, Inc. | Electro-optic phase shifter with reduced input capacitance |
US4763974A (en) * | 1987-08-13 | 1988-08-16 | Trw Inc. | Δβ-Phase reversal coupled waveguide interferometer |
US4940305A (en) * | 1989-03-22 | 1990-07-10 | The Boeing Company | Optical switch based on 1×2 directional coupler |
US4936644A (en) * | 1989-06-13 | 1990-06-26 | Hoechst Celanese Corp. | Polarization-insensitive interferometric waveguide electrooptic modulator |
US4932738A (en) * | 1989-06-13 | 1990-06-12 | Hoechst Celanese Corp. | Polarization-insensitive interferometric waveguide electrooptic modulator |
US4936645A (en) * | 1989-08-24 | 1990-06-26 | Hoechst Celanese Corp. | Waveguide electrooptic light modulator with low optical loss |
US5031235A (en) * | 1989-10-27 | 1991-07-09 | Hoechst Celanese Corp. | Cable system incorporating highly linear optical modulator |
-
1990
- 1990-11-06 US US07/609,808 patent/US5119447A/en not_active Expired - Lifetime
-
1991
- 1991-10-28 CA CA002054337A patent/CA2054337C/en not_active Expired - Fee Related
- 1991-10-29 DE DE69111184T patent/DE69111184T2/en not_active Expired - Fee Related
- 1991-10-29 EP EP91118379A patent/EP0484791B1/en not_active Expired - Lifetime
- 1991-11-04 NO NO914317A patent/NO306082B1/en not_active IP Right Cessation
- 1991-11-06 JP JP3317343A patent/JP2698797B2/en not_active Expired - Fee Related
- 1991-11-06 MX MX9101952A patent/MX9101952A/en not_active IP Right Cessation
-
1997
- 1997-06-26 HK HK90397A patent/HK90397A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0484791A2 (en) | 1992-05-13 |
US5119447A (en) | 1992-06-02 |
JPH04265951A (en) | 1992-09-22 |
MX9101952A (en) | 1992-07-08 |
NO306082B1 (en) | 1999-09-13 |
CA2054337C (en) | 2001-03-27 |
NO914317L (en) | 1992-05-07 |
NO914317D0 (en) | 1991-11-04 |
JP2698797B2 (en) | 1998-01-19 |
DE69111184D1 (en) | 1995-08-17 |
EP0484791B1 (en) | 1995-07-12 |
HK90397A (en) | 1997-08-01 |
EP0484791A3 (en) | 1992-12-30 |
DE69111184T2 (en) | 1996-04-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |