CA2571414A1 - Optical fiber transmission system with noise loading - Google Patents
Optical fiber transmission system with noise loading Download PDFInfo
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- CA2571414A1 CA2571414A1 CA002571414A CA2571414A CA2571414A1 CA 2571414 A1 CA2571414 A1 CA 2571414A1 CA 002571414 A CA002571414 A CA 002571414A CA 2571414 A CA2571414 A CA 2571414A CA 2571414 A1 CA2571414 A1 CA 2571414A1
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- signal
- noise
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- receiver
- wdm
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0221—Power control, e.g. to keep the total optical power constant
-
- 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
- H04B10/564—Power control
Abstract
A system and method for loading unutilized channels of a WDM system with noise to improve system performance. A transmitter amplifier may impart noise to unutilized channels by reducing amplifier input or providing feedback of the amplifier output. Noise signals may also be looped back to the transmitter from received signals.
Claims (95)
1. A WDM (wavelength division multiplex) optical system comprising:
a WDM transmitter configured to provide a WDM signal;
at least one power adjustment device coupled to said transmitter for attenuating said WDM signal; and an optical amplifier coupled to said at least one power adjustment device.
a WDM transmitter configured to provide a WDM signal;
at least one power adjustment device coupled to said transmitter for attenuating said WDM signal; and an optical amplifier coupled to said at least one power adjustment device.
2. The system of claim 1, wherein said WDM signal has a bandwidth comprising least one utilized and at least one unutilized channel of said WDM
optical system.
optical system.
3. The system of claim 2, wherein said WDM transmitter is configured to provide an information signal on each of said utilized channels.
4. The system of claim 3, wherein said optical amplifier is configured to amplify said attenuated WDM signal to provide an output comprising each said information signal on said utilized channels and noise at said unutilized channels.
5. The system of claim 4, wherein said noise extends across said bandwidth.
6. The system of claim 5, wherein said power adjustment device is configured to attenuate said WDM signal to achieve a desired optical signal-to-noise ratio for said information signals.
7. The system of claim 1, wherein said at least one power adjustment device comprises a variable optical attenuator.
8. The system of claim 1, wherein said optical amplifier comprises an erbium doped fiber amplifier.
9. The system of claim 1, said system further comprising an optically amplified transmission line coupled to said amplifier.
10. A method of transmitting a WDM signal on an optically amplified transmission path, said method comprising:
providing a source signal extending across a system bandwidth and comprising at least one unutilized channel and at least one information signal on an associated utilized channel;
imparting amplified spontaneous emission (ASE) noise on said unutilized channels; and coupling said source signal on said optically amplified transmission path after said imparting ASE noise on said unutilized channels.
providing a source signal extending across a system bandwidth and comprising at least one unutilized channel and at least one information signal on an associated utilized channel;
imparting amplified spontaneous emission (ASE) noise on said unutilized channels; and coupling said source signal on said optically amplified transmission path after said imparting ASE noise on said unutilized channels.
11. The method of claim 10, wherein said imparting ASE noise on said unutilized channels step comprises attenuating said source signal and amplifying said attenuated source signal in an optical amplifier.
12. The method of claim 11, wherein said optical amplifier comprises an erbium doped fiber amplifier.
13. The method of claim 11, wherein said attenuating step comprises attenuating said source signal to achieve a desired optical signal-to-noise ratio for said information signals in said amplified source signal.
14. A WDM (wavelength division multiplex) optical system comprising:
a WDM transmitter configured to provide a WDM signal;
at least one optical amplifier configured for amplifying said WDM signal; and a noise loading feedback path coupling a portion of said amplifier output with an input of said amplifier as a feedback signal.
a WDM transmitter configured to provide a WDM signal;
at least one optical amplifier configured for amplifying said WDM signal; and a noise loading feedback path coupling a portion of said amplifier output with an input of said amplifier as a feedback signal.
15. The system of claim 14, wherein said WDM signal comprises at least one utilized and at least one unutilized channel of said WDM optical system.
16. The system of claim 15, wherein said WDM transmitter is configured to provide an information signal on each of said utilized channels.
17. The system of claim 16, wherein said feedback path comprises at least one filter configured to filter said information signals from said portion of said amplifier output.
18. The system of claim 17, wherein said feedback path comprises a coherence reducer configured to reduce optical coherence between said amplifier output and said feedback signal.
19. The system of claim 18, wherein said coherence reducer comprises a segment of optical fiber.
20. The system of claim 17, wherein said feedback path comprises an optical attenuator configured to attenuate at least a portion of said portion of said amplifier output.
21. The system of claim 17, wherein said optical amplifier is configured to amplify said WDM signal and said feedback signal to provide an output comprising each said information signal on said utilized channels and noise at said unutilized channels.
22. The system of claim 14, wherein said optical amplifier comprises an erbium doped fiber amplifier.
23. The system of claim 14, said system further comprising an optically amplified transmission line coupled to said amplifier.
24. A method of transmitting a WDM signal on an optically amplified transmission path, said method comprising:
providing a source signal comprising at least one unutilized channel and at least one information signal on an associated utilized channel;
amplifying said source signal in an optical amplifier;
coupling a portion of an output of said optical amplifier on a noise loading feedback path;
filtering said portion of said output on said noise loading feedback path to remove said information signals from said portion of said output;
coupling said filtered output to an input of said optical amplifier as a feedback signal.
providing a source signal comprising at least one unutilized channel and at least one information signal on an associated utilized channel;
amplifying said source signal in an optical amplifier;
coupling a portion of an output of said optical amplifier on a noise loading feedback path;
filtering said portion of said output on said noise loading feedback path to remove said information signals from said portion of said output;
coupling said filtered output to an input of said optical amplifier as a feedback signal.
25. The method of claim 24, wherein said optical amplifier comprises an erbium doped fiber amplifier.
26. The method of claim 24, said method further comprising reducing coherence between said feedback signal and said output of said optical amplifier.
27. The method of claim 24, said method further comprising attenuating said filtered output signal.
28. A WDM (wavelength division multiplex) optical system comprising:
a WDM transmitter configured to provide a transmitted WDM signal on a transmitter fiber path, said WDM signal comprising a source signal including at least one utilized channel and at least one unutilized channel;
a WDM receiver configured to receive a receiver WDM signal on a receiver fiber path, said receiver WDM signal comprising said at least one utilized channel and said at least one unutilized channel; and a noise loading loop back path coupling a portion of said receiver WDM
signal to said transmitter as a noise loading loop back signal whereby said transmitted WDM signal comprises said source signal and at least a portion of said noise loading loop back signal.
a WDM transmitter configured to provide a transmitted WDM signal on a transmitter fiber path, said WDM signal comprising a source signal including at least one utilized channel and at least one unutilized channel;
a WDM receiver configured to receive a receiver WDM signal on a receiver fiber path, said receiver WDM signal comprising said at least one utilized channel and said at least one unutilized channel; and a noise loading loop back path coupling a portion of said receiver WDM
signal to said transmitter as a noise loading loop back signal whereby said transmitted WDM signal comprises said source signal and at least a portion of said noise loading loop back signal.
29. The system of claim 28, wherein said receiver WDM signal comprises a received information signal on each of said utilized channels.
30. The system of claim 29, wherein said receiver comprises at least one filter configured to filter said received information signals from said portion of said receiver WDM signal.
31. The system of claim 30, wherein said receiver comprises a plurality of said filters, each of said plurality of filters being configured for filtering an associated one of said information signals from said portion of said receiver WDM signal.
32. The system of claim 31, wherein said transmitter comprises a plurality of transmitter filters, and wherein said noise loading loop back signal is coupled to said plurality of transmitter filters for filtering said loop back signal.
33. The system of claim 30, wherein said at least one filter comprises a optical interleaving filter.
34. The system of claim 33, wherein said optical interleaving filter exhibits a substantially flat filter pass band.
35. The system of claim 33, wherein said optical interleaving filter exhibits a temperature-dependent center frequency.
36. The system of claim 30, wherein said at least one filter comprises a plurality of optical interleaving filters.
37. The system of claim 36, wherein a first optical interleaving filter is coupled to an output of a second optical interleaving filter, said first optical interleaving filter having a center frequency offset from a center frequency of said second optical interleaving filter.
38. The system of claim 28, wherein said receiver comprises at least one optical interleaving filter for filtering noise tones from at least a portion of said receiver WDM
signal, said optical interleaving filter being coupled to said noise loading loop back path for providing said noise tones on said loop back path.
signal, said optical interleaving filter being coupled to said noise loading loop back path for providing said noise tones on said loop back path.
39. The system of claim 28, wherein said receiver comprises a first optical interleaving filter for filtering first noise tones from at least a portion of said receiver WDM signal, said first optical interleaving filter being coupled to said noise loading loop back path for providing said first noise tones on said noise loading loop back path; and wherein said receiver comprises a second optical interleaving filter for filtering second noise tones from at least a portion of said receiver WDM signal, said second optical interleaving filter being coupled to a second noise loading loop back path, and wherein said second noise loading loop back path is coupled to said first noise loading loop back path for providing said second noise tones on said noise loading loop back path.
40. The system of claim 39, wherein said each of said first noise tones is at a different WDM channel than each of said second noise tones.
41. The system of claim 28, said system further comprising:
a second WDM receiver configured to receive said transmitted WDM signal on said transmitter fiber path; and a second WDM transmitter configured to transmit said receiver WDM signal on said receiver fiber path; and a second noise loading loop back path coupling a portion of said transmitted WDM signal to said second transmitter as a second noise loading loop back signal whereby said receiver WDM signal comprises at least a portion of said second noise loading loop back signal.
a second WDM receiver configured to receive said transmitted WDM signal on said transmitter fiber path; and a second WDM transmitter configured to transmit said receiver WDM signal on said receiver fiber path; and a second noise loading loop back path coupling a portion of said transmitted WDM signal to said second transmitter as a second noise loading loop back signal whereby said receiver WDM signal comprises at least a portion of said second noise loading loop back signal.
42. The system of claim 41, wherein said receiver comprises at least one first receiver optical interleaving filter for filtering first noise tones from at least a portion of said receiver WDM signal, said first receiver optical interleaving filter being coupled to said noise loading loop back path for providing said first noise tones on said noise loading loop back path.
43. The system of claim 42, wherein said second receiver comprises at least one second receiver optical interleaving filter for filtering second noise tones from at least a portion of said transmitted WDM signal, said second receiver optical interleaving filter being coupled to said second noise loading loop back path for providing said second noise tones on said second noise loading loop back path.
44. The system of claim 43, wherein said each of said first noise tones is at a different WDM channel than each of said second noise tones.
45. The system of claim 28, wherein said noise loading loop back path comprise a power adjustment device configured for attenuating said portion of said receiver WDM
signal.
signal.
46. The system of claim 45, wherein said power adjustment device comprises at least one variable optical attenuator.
47. The system of claim 45, wherein said power adjustment device is configured for separately attenuating the optical power of each of a plurality of channels of said portion of said receiver WDM signal.
48. The system of claim 45, wherein said power adjustment device comprises an optical amplifier.
49. The system of claim 28, wherein said noise loading loop back path comprise at least one optical filter.
50. The system of claim 28, wherein said noise loading loop back path comprise a modulator for modulating said portion of said receiver WDM signal.
51. The system of claim 50, wherein said modulator comprises an acoustic optical modulator
52. The system of claim 50, wherein said modulator is configured to impart on/off modulation to said portion of said receiver WDM signal.
53. The system of claim 52, wherein said modulator is configured to impart said on/off modulation at a frequency higher than the inverse of the relaxation of at least one amplifier in an optical transmission path for receiving said transmitted WDM
signal.
signal.
54. The system of claim 28, wherein said noise loading loop back path comprises a multi-path interference portion wherein said portion of said receiver WDM
signal is separated onto said first and second paths having ends combined onto a single path.
signal is separated onto said first and second paths having ends combined onto a single path.
55. The system of claim 54, wherein said first path comprises a power adjustment device and said second path comprises a fiber segment.
56. The system of claim 28, said system further comprising:
a second WDM transmitter configured to provide a second transmitted WDM
signal on a second transmitter fiber path, said WDM signal comprising a second source signal including at least one second transmitter utilized channel and at least one second transmitter unutilized channel;
a second WDM receiver configured to receive a second receiver WDM signal on a second receiver fiber path, said second receiver WDM signal comprising said at least one second transmitter utilized channel and said at least one second transmitter unutilized channel; and a second noise loading loop back path coupling a portion of said second receiver WDM signal to said second transmitter as a second noise loading loop back signal whereby said second transmitted WDM signal comprises said second source signal and at least a portion of said second noise loading loop back signal;
a third noise loading loop back path coupling a portion of said second receiver WDM signal to said transmitter as a third noise loading loop back signal whereby said transmitted WDM signal comprises said source signal, said at least a portion of said noise loading loop back signal, and at least a portion of said second noise loading loop back signal.
a second WDM transmitter configured to provide a second transmitted WDM
signal on a second transmitter fiber path, said WDM signal comprising a second source signal including at least one second transmitter utilized channel and at least one second transmitter unutilized channel;
a second WDM receiver configured to receive a second receiver WDM signal on a second receiver fiber path, said second receiver WDM signal comprising said at least one second transmitter utilized channel and said at least one second transmitter unutilized channel; and a second noise loading loop back path coupling a portion of said second receiver WDM signal to said second transmitter as a second noise loading loop back signal whereby said second transmitted WDM signal comprises said second source signal and at least a portion of said second noise loading loop back signal;
a third noise loading loop back path coupling a portion of said second receiver WDM signal to said transmitter as a third noise loading loop back signal whereby said transmitted WDM signal comprises said source signal, said at least a portion of said noise loading loop back signal, and at least a portion of said second noise loading loop back signal.
57. The system of claim 56, said system further comprising: a fourth noise loading loop back path coupling a portion of said receiver WDM signal to said second transmitter as a fourth noise loading loop back signal whereby said second transmitted WDM signal comprises said second source signal, at least a portion of said noise loading loop back signal, and said at least a portion of said second noise loading loop back signal.
58. The system of claim 28, said system further comprising:
a broad band noise source coupled to said noise loading loop back path for coupling seed noise to said noise loading loop back path, whereby said transmitted WDM signal comprises said source signal, at least a portion of said seed noise, and said at least a portion of said noise loading loop back signal.
a broad band noise source coupled to said noise loading loop back path for coupling seed noise to said noise loading loop back path, whereby said transmitted WDM signal comprises said source signal, at least a portion of said seed noise, and said at least a portion of said noise loading loop back signal.
59. The system of claim 58, wherein said broadband noise source is coupled to said noise loading loop back path through an optical interleaving filter.
60. The system of claim 58, wherein said broadband noise source is coupled to said noise loading loop back path through a power adjustment device.
61. The system of claim 58, wherein said broadband noise source comprises an optical amplifier.
62. The system of claim 58, said system further comprising a second receiver fiber path and wherein said broadband noise source comprises at least a portion of an output of said second receiver fiber path.
63. The system of claim 58, wherein said broadband noise source comprises a single noise source separated onto multiple paths, and wherein one of said multiple paths is coupled to said noise loading loop back path.
64. A method of transmitting a WDM signal on an optically amplified transmission path, said method comprising:
receiving a receiver WDM signal on a receiver fiber path, coupling at least a portion of said receiver WDM signal to a transmitter as a noise loading loop back signal; and providing a transmitted WDM signal on a transmitter fiber path, said transmitted WDM signal comprising a source signal including at least one utilized channel and at least one unutilized channel, and at least a portion of said noise loading loop back signal.
receiving a receiver WDM signal on a receiver fiber path, coupling at least a portion of said receiver WDM signal to a transmitter as a noise loading loop back signal; and providing a transmitted WDM signal on a transmitter fiber path, said transmitted WDM signal comprising a source signal including at least one utilized channel and at least one unutilized channel, and at least a portion of said noise loading loop back signal.
65. The method of claim 64, wherein said receiver WDM signal comprises said at least one utilized channel carrying an associated information signal and said at least one unutilized channel.
66. The method of claim 65, said method further comprising passing said receiver WDM signal through at least one filter to remove said information signals from said portion of said receiver WDM signal.
67. The method of claim 66, wherein said at least one filter comprises a plurality of receiver filters, each of said plurality of receiver filters being configured for filtering an associated one of said information signals from said portion of said receiver WDM
signal.
signal.
68. The method of claim 67, wherein said at least one filter further comprises a plurality of transmitter filters.
69. The method of claim 66, wherein said at least one filter comprises an optical interleaving filter.
70. The method of claim 69, wherein said optical interleaving filter exhibits a temperature-dependent center frequency, and wherein said filtering step comprises modulating a temperature of said optical interleaving filter to dither said center frequency.
71. The method of claim 66, wherein said at least one filter comprises a plurality of optical interleaving filters.
72. The method of claim 71, wherein a first optical interleaving filter is coupled to an output of a second optical interleaving filter, said first optical interleaving filter having a center frequency offset from a center frequency of said second optical interleaving filter.
73. The method of claim 64, wherein said coupling step comprises filtering noise tones from said WDM signal using an optical interleaving filter, whereby said noise loading loop back signal comprises said noise tones.
74. The method of claim 64, wherein said coupling step comprises filtering first noise tones from said WDM signal using a first optical interleaving filter, and filtering second noise tones from said WDM signal using a second optical interleaving filter, whereby said noise loading loop back signal comprises said first and second noise tones.
75. The method of claim 74, wherein said each of said first noise tones is at a different WDM channel than each of said second noise tones.
76. The method of claim 64, said method further comprising:
receiving said transmitted WDM signal on said transmitter fiber path;
coupling at least a portion of said transmitter WDM signal to a second transmitter as a second noise loading loop back signal; and transmitting said receiver WDM signal on said receiver fiber path from said second transmitter, said receiver WDM signal comprising at least a portion of said second noise loading loop back signal.
receiving said transmitted WDM signal on said transmitter fiber path;
coupling at least a portion of said transmitter WDM signal to a second transmitter as a second noise loading loop back signal; and transmitting said receiver WDM signal on said receiver fiber path from said second transmitter, said receiver WDM signal comprising at least a portion of said second noise loading loop back signal.
77. The method of claim 76, wherein said coupling at least a portion of said receiver WDM signal comprises filtering first noise tones from said receiver WDM
signal using a first optical interleaving filter, whereby said noise loading loop back signal comprises said first noise tones.
signal using a first optical interleaving filter, whereby said noise loading loop back signal comprises said first noise tones.
78. The method of claim 77, wherein said coupling at least a portion of said transmitter WDM signal comprises filtering second noise tones from said transmitted WDM signal using a second optical interleaving filter, whereby said second noise loading loop back signal comprises said second noise tones.
79. The method of claim 78, wherein said each of said first noise tones is at a different WDM channel than each of said second noise tones.
80. The method of claim 64, wherein said noise loading loop back signal is coupled to said transmitter through a power adjustment device configured for attenuating said portion of said receiver WDM signal.
81. The method of claim 64, wherein said noise loading loop back signal is coupled to said transmitter through a modulator for modulating said portion of said receiver WDM signal.
82. The method of claim 81, wherein said modulator comprises an acoustic optical modulator
83. The method of claim 81, wherein said modulator is configured to impart on/off modulation to said portion of said receiver WDM signal.
84. The method of claim 83, wherein said modulator is configured to impart said on/off modulation at a frequency higher than the inverse of the relaxation time of at least one amplifier in said optical transmission path.
85. The method of claim 64, wherein said noise loading loop signal is coupled to said transmitter through a multi-path interference configuration wherein said portion of said receiver WDM signal is separated onto first and second paths having ends combined onto a single path.
86. The method of claim 64, said system further comprising:
receiving a second receiver WDM signal on a second receiver fiber path, coupling at least a portion of said second receiver WDM signal to said transmitter as a second noise loading loop back signal, whereby said transmitted WDM
signal comprises said source signal, said at least said portion of said noise loading loop back signal, and at least a portion of said second noise loading loop back signal.
receiving a second receiver WDM signal on a second receiver fiber path, coupling at least a portion of said second receiver WDM signal to said transmitter as a second noise loading loop back signal, whereby said transmitted WDM
signal comprises said source signal, said at least said portion of said noise loading loop back signal, and at least a portion of said second noise loading loop back signal.
87. The method of claim 64, said method further comprising:
coupling seed noise from a broad band noise source to said transmitter, whereby said transmitted WDM signal comprises said source signal, at least a portion of said seed noise, and said at least a portion of said noise loading loop back signal.
coupling seed noise from a broad band noise source to said transmitter, whereby said transmitted WDM signal comprises said source signal, at least a portion of said seed noise, and said at least a portion of said noise loading loop back signal.
88. The method of claim 87, wherein said broadband noise source is coupled to said transmitter through an optical interleaving filter.
89. The method of claim 87, wherein said broadband noise source is coupled to said transmitter a power adjustment device.
90. A WDM (wavelength division multiplex) optical system comprising:
a WDM transmitter configured to provide a transmitted WDM signal on a transmitter fiber path, said WDM signal comprising a source signal including at least one utilized channel and at least one unutilized channel; and a broadband noise source coupled to said transmitter for providing a noise signal, whereby said WDM signal comprises said source signal and said noise signal.
a WDM transmitter configured to provide a transmitted WDM signal on a transmitter fiber path, said WDM signal comprising a source signal including at least one utilized channel and at least one unutilized channel; and a broadband noise source coupled to said transmitter for providing a noise signal, whereby said WDM signal comprises said source signal and said noise signal.
91. The system of claim 90, wherein said transmitter comprises a plurality of transmitter filters each of said transmitter filters combining an associated one of said utilized channels into said source signal, and wherein said broadband noise source is coupled to said plurality of transmitter filters.
92. The system of claim 90, wherein said broadband noise source is coupled to said transmitter through an optical interleaving filter, and wherein said noise signal comprises discrete noise tones output from said optical interleaving filter.
93. A method of upgrading a WDM (wavelength division multiplex) optical system to include at least one additional utilized channel wherein the system includes a noise loading loop back path for providing noise on unutilized channels, the noise loading loop back path including first and second paths having ends combined onto a single path, said method comprising:
modifying said first path to include at least one filter for filtering noise from a spectral location associated with said at least one additional utilized channel; and disconnecting said second path from said single path.
modifying said first path to include at least one filter for filtering noise from a spectral location associated with said at least one additional utilized channel; and disconnecting said second path from said single path.
94. The method of claim 93, said method comprising disconnecting said first path from said single path before said modifying said first path; reconnecting said first path to said single path after said modifying said first path; and disconnecting said second path from said single path after said reconnecting said first path to said single path.
95. The method of claim 93, wherein said modifying said first path comprises configuring a loss associated with said first path to minimize channel power increase in the system when the at least one additional utilized channel is added.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/877,059 US7526201B2 (en) | 2004-06-25 | 2004-06-25 | Optical fiber transmission system with noise loading |
| US10/877,059 | 2004-06-25 | ||
| PCT/US2005/022502 WO2006012303A2 (en) | 2004-06-25 | 2005-06-23 | Optical fiber transmission system with noise loading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2571414A1 true CA2571414A1 (en) | 2006-02-02 |
| CA2571414C CA2571414C (en) | 2014-08-12 |
Family
ID=35505883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2571414A Expired - Fee Related CA2571414C (en) | 2004-06-25 | 2005-06-23 | Optical fiber transmission system with noise loading |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US7526201B2 (en) |
| EP (1) | EP1766812B1 (en) |
| JP (2) | JP4542144B2 (en) |
| AU (1) | AU2005267180B2 (en) |
| CA (1) | CA2571414C (en) |
| WO (1) | WO2006012303A2 (en) |
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-
2004
- 2004-06-25 US US10/877,059 patent/US7526201B2/en not_active Expired - Fee Related
-
2005
- 2005-06-23 JP JP2007518313A patent/JP4542144B2/en not_active Expired - Fee Related
- 2005-06-23 WO PCT/US2005/022502 patent/WO2006012303A2/en not_active Application Discontinuation
- 2005-06-23 EP EP05784211.4A patent/EP1766812B1/en not_active Expired - Fee Related
- 2005-06-23 CA CA2571414A patent/CA2571414C/en not_active Expired - Fee Related
- 2005-06-23 AU AU2005267180A patent/AU2005267180B2/en not_active Ceased
-
2009
- 2009-03-17 US US12/405,559 patent/US7881611B2/en not_active Expired - Fee Related
- 2009-12-02 JP JP2009274264A patent/JP4981882B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008504747A (en) | 2008-02-14 |
| JP4542144B2 (en) | 2010-09-08 |
| EP1766812A2 (en) | 2007-03-28 |
| US7881611B2 (en) | 2011-02-01 |
| US20090214214A1 (en) | 2009-08-27 |
| WO2006012303A2 (en) | 2006-02-02 |
| EP1766812A4 (en) | 2012-02-01 |
| CA2571414C (en) | 2014-08-12 |
| AU2005267180A1 (en) | 2006-02-02 |
| US7526201B2 (en) | 2009-04-28 |
| WO2006012303A3 (en) | 2007-03-01 |
| AU2005267180B2 (en) | 2010-03-18 |
| JP4981882B2 (en) | 2012-07-25 |
| JP2010093836A (en) | 2010-04-22 |
| US20050286905A1 (en) | 2005-12-29 |
| EP1766812B1 (en) | 2014-12-24 |
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