Title:
OPTICAL WAVELENGTH MULTIPLEXING AND DEMULTIPLEXING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2010/007888
Kind Code:
A1
Abstract:
Provided is an optical wavelength multiplexing and demultiplexing circuit that compensates for the temperature dependence of a transmitting central wavelength remaining in an athermal AWG, that is excellent in a transmittable central wavelength precision in all the usable temperature region or relatively wide in all the usable temperature region, and that has low loss and flat transmitting spectra. Taking note of such a point that the transmitting central wavelength of an MZI synchronizing AWG is approximately an average value of an MZI transmitting wavelength and the AWG transmittable central wavelength, the temperature dependence of the athermal MZI transmittable wavelength is modulated to set, thereby canceling the temperature dependence of the transmittable central wavelength remaining in the athermal AWG. Particularly taking note of an optical coupler in the MZI, a mechanism in which a phase difference between two outputs changes in accordance with a temperature is provided to the optical coupler per se, thereby modulating the temperature dependence of the MZI transmittable wavelength.
Inventors:
KAMEI SHIN (JP)
KITOH TSUTOMU (JP)
KOHTOKU MASAKI (JP)
SHIBATA TOMOHIRO (JP)
TANAKA TAKUYA (JP)
INOUE YASUYUKI (JP)
ITOH MIKITAKA (JP)
KITOH TSUTOMU (JP)
KOHTOKU MASAKI (JP)
SHIBATA TOMOHIRO (JP)
TANAKA TAKUYA (JP)
INOUE YASUYUKI (JP)
ITOH MIKITAKA (JP)
Application Number:
PCT/JP2009/062010
Publication Date:
January 21, 2010
Filing Date:
June 30, 2009
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
KAMEI SHIN (JP)
KITOH TSUTOMU (JP)
KOHTOKU MASAKI (JP)
SHIBATA TOMOHIRO (JP)
TANAKA TAKUYA (JP)
INOUE YASUYUKI (JP)
ITOH MIKITAKA (JP)
KAMEI SHIN (JP)
KITOH TSUTOMU (JP)
KOHTOKU MASAKI (JP)
SHIBATA TOMOHIRO (JP)
TANAKA TAKUYA (JP)
INOUE YASUYUKI (JP)
ITOH MIKITAKA (JP)
International Classes:
G02B6/12
Domestic Patent References:
| WO2004001470A1 | 2003-12-31 | |||
| WO1998036299A1 | 1998-08-20 |
Foreign References:
| JP2004199046A | 2004-07-15 | |||
| US20060198579A1 | 2006-09-07 | |||
| JP2006284632A | 2006-10-19 | |||
| JP2007316335A | 2007-12-06 | |||
| US20030223694A1 | 2003-12-04 | |||
| US20030128926A1 | 2003-07-10 | |||
| JP2001116937A | 2001-04-27 | |||
| JPH0869021A | 1996-03-12 | |||
| US6728446B2 | 2004-04-27 | |||
| JP2003149474A | 2003-05-21 |
Other References:
S.KAMEI ET AL.: "Athermal Mach- Zehnder interferometer-synchronised arrayed waveguide grating multi/demultiplexer with low loss and wide passband", ELECTRONICS LETTERS, vol. 44, no. 3, 31 January 2008 (2008-01-31), pages 201 - 202, XP006030438
J.B.D. SOOLE ET AL.: "Athermalisation of silica arrayed waveguide grating multiplexers", ELECTRONICS LETTERS, vol. 39, no. 16, 7 August 2003 (2003-08-07), pages 1182 - 1184, XP006020715
T.MIZUNO ET AL.: "Uniform wavelength spacing Mach-Zehnder interferometer using phase- generating couplers", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 24, no. 8, August 2006 (2006-08-01), pages 3217 - 3226, XP008140998
Z.ZHANG ET AL.: "Planar waveguide-based silica- polymer hybrid variable optical attenuator and its associated polymers", APPLIED OPTICS, vol. 44, no. 12, 20 April 2005 (2005-04-20), pages 2402 - 2408, XP008141002
J.B.D. SOOLE: "Athermalisation of silica arrayed waveguide grating multiplexers", ELECTRONICS LETTERS, vol. 39, 2003, pages 1182 - 1184, XP006020715, DOI: doi:10.1049/el:20030715
S.KAMEI: "Athermal Mach-Zehnder interferometer-synchronised arrayed waveguide grating multi/demultiplexer with low loss and wide passband", ELECTRONICS LETTERS, vol. 44, 2008, pages 201 - 202, XP006030438
T.MIZUNO: "Uniform wavelength spacing Mach-Zehnder interferometer using phase-generating couplers", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 24, 2006, pages 3217 - 3226, XP008140998, DOI: doi:10.1109/JLT.2006.876342
ZHANG: "Planer waveguide-based silica-polymer hybrid variable optical attenuator and its associated polymers", APPLIED OPTICS, vol. 44, 2005, pages 2402 - 2408, XP008141002, DOI: doi:10.1364/AO.44.002402
L.LEUTHOLD: "Multimode Interference Couplers for the Conversion and Combining of Zero- and First-Oder Modes", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 16, 1998, pages 1228 - 1238, XP011029174
See also references of EP 2302429A4
J.B.D. SOOLE ET AL.: "Athermalisation of silica arrayed waveguide grating multiplexers", ELECTRONICS LETTERS, vol. 39, no. 16, 7 August 2003 (2003-08-07), pages 1182 - 1184, XP006020715
T.MIZUNO ET AL.: "Uniform wavelength spacing Mach-Zehnder interferometer using phase- generating couplers", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 24, no. 8, August 2006 (2006-08-01), pages 3217 - 3226, XP008140998
Z.ZHANG ET AL.: "Planar waveguide-based silica- polymer hybrid variable optical attenuator and its associated polymers", APPLIED OPTICS, vol. 44, no. 12, 20 April 2005 (2005-04-20), pages 2402 - 2408, XP008141002
J.B.D. SOOLE: "Athermalisation of silica arrayed waveguide grating multiplexers", ELECTRONICS LETTERS, vol. 39, 2003, pages 1182 - 1184, XP006020715, DOI: doi:10.1049/el:20030715
S.KAMEI: "Athermal Mach-Zehnder interferometer-synchronised arrayed waveguide grating multi/demultiplexer with low loss and wide passband", ELECTRONICS LETTERS, vol. 44, 2008, pages 201 - 202, XP006030438
T.MIZUNO: "Uniform wavelength spacing Mach-Zehnder interferometer using phase-generating couplers", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 24, 2006, pages 3217 - 3226, XP008140998, DOI: doi:10.1109/JLT.2006.876342
ZHANG: "Planer waveguide-based silica-polymer hybrid variable optical attenuator and its associated polymers", APPLIED OPTICS, vol. 44, 2005, pages 2402 - 2408, XP008141002, DOI: doi:10.1364/AO.44.002402
L.LEUTHOLD: "Multimode Interference Couplers for the Conversion and Combining of Zero- and First-Oder Modes", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 16, 1998, pages 1228 - 1238, XP011029174
See also references of EP 2302429A4
Attorney, Agent or Firm:
TANI Yoshikazu et al. (JP)
Valley Yoshikazu (JP)
Valley Yoshikazu (JP)
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