Optical waveguides – Polarization without modulation
Reexamination Certificate
2007-08-21
2007-08-21
Pak, Sung (Department: 2874)
Optical waveguides
Polarization without modulation
C359S494010, C359S490020, C359S490020
Reexamination Certificate
active
11095264
ABSTRACT:
An optical isolator includes first and second optical splitter-combiners disposed within a semiconductor die. The optical splitter-combiners are coupled together into an interferometer configuration by first and second waveguide sections also disposed in the semiconductor die. A non-reciprocal optical phase shift element is disposed within the semiconductor die and includes the first waveguide section passing through the non-reciprocal optical phase shift element. The optical isolator is configured such that forward propagating waves are constructively recombined by the second optical splitter-combiner while reverse propagating wave are destructively recombined by the first optical splitter-combiner.
REFERENCES:
patent: 5400418 (1995-03-01), Pearson et al.
patent: 6175668 (2001-01-01), Borrelli et al.
patent: 6434289 (2002-08-01), Paniccia et al.
patent: 6535656 (2003-03-01), Noge et al.
patent: 6690036 (2004-02-01), Morse et al.
patent: 6757451 (2004-06-01), Chang et al.
patent: 6947619 (2005-09-01), Fujita et al.
patent: 7043100 (2006-05-01), Fujita et al.
patent: 2002/0173058 (2002-11-01), Liu et al.
patent: 2003/0113053 (2003-06-01), Kuramata
patent: 2003/0198438 (2003-10-01), Wang et al.
patent: 2003/0223694 (2003-12-01), Nikonov et al.
patent: 2004/0141677 (2004-07-01), Hanashima et al.
patent: 2004/0179256 (2004-09-01), Hammer
patent: 793130 (1997-09-01), None
patent: 1227359 (2002-07-01), None
patent: 10-239637 (1998-09-01), None
patent: 2002-277826 (2002-09-01), None
patent: WO 2004-061494 (2004-07-01), None
Liu, P. et al., “Study of Form Birefringence in Waveguide Devices Using the Semivectorial Beam Propagation Method,” IEEE Photonics Technology Letters, vol. 3, No. 10, (Oct. 1991), pp. 913-915.
Zhuromsky, O. et al., “Polarization Independent Mach-Zehnder-Type Integrated Optical Isolator,” Journal of Lightwave Technology, vol. 17, No. 7, (Jul. 1999), pp. 1200-1205.
Izuhara, T. et al., “Direct wafer bonding and transfer of 10-μm-thick magnetic garnet films onto semiconductor surfaces,” Applied Physics Letters, vol. 76, No. 10, (Mar. 6, 2000), pp. 1261-1263.
Fujita, J. et al., “Waveguide optical isolator based on Mach-Zehnder interferometer,” Applied Physics Letters, vol. 76, No. 16, (Apr. 17, 2000), pp. 2158-2160.
den Bensten, J.H. et al., “Simulation and Design of a 40 GHz Mach-Zehnder Modulator on InP,” Proceedings Symposium IEEE/LEOS Benelux Chapter, 2002, Amsterdam, pp. 123-126.
Salib, M. et al., “Integratable Polarization Rotator,” U.S. Appl. No. 10/963,313, filed Oct. 11, 2004.
McDonald, M. et al., “Semi-Integrated Designs with In-Waveguide Mirrors for External Cavity Tunable Lasers,” U.S. Appl. No. 11/023,711, filed on Dec. 28, 2004.
Fujita, J. et al., “Polarization-Independent Waveguide Optical Isolator Based on Nonreciprocal Phase Shift”, IEEE Photonics Technology Letters, vol. 12, No. 11, Nov. 2000, pp. 1510-1512.
Okamura, Y. et al., “Integrated optical isolator and circulator using nonreciprocal phase shifters: a proposal”, Applied Optics, vol. 23, No. 11, Jun. 1, 1984, pp. 1886-1889.
Fujita, J. et al., “Waveguide optical isolator based on Mach-Zehnder interferometer”, Applied Physics Letters, vol. 76, No. 16, Apr. 17, 2000, pp. 2158-2160.
Mizumoto, T. et al., “In-Plane Magnetized Rare Earth Iron Garnet for a Waveguide Optical Isolator Employing Nonreciprocal Phase Shift”, IEEE Transactions on Magnetics, vol. 29, No. 6, Nov. 1993, pp. 3417-3419.
PCT/US2006/012996, PCT International Search Report and Written Opinion of the International Searching Authority, Aug. 1, 2006.
Izuhara, T. et al., “Integration of Magnetooptical Waveguides Onto a III-V Semiconductor Surface” IEEE Photonics Technology Letters, vol. 14, No. 2, (Feb. 2002), pp. 167-169.
“Gallium Gadolinium Garnet, Gd3Ga5O12,” Alomaz Optics, Inc. Retrieved from http://www.almazoptics.com/GGG.html on Oct. 26, 2006.
“Gallium Gadolinium Garnet,” from Wikipedia, the free encyclopedia. Retrieved from http://en.wikipedia.org/wiki/Gallium—Gadolinium—Garnet on Oct. 26, 2006.
“Gallium Gadolinium Garnet,” Marubeni Specialty Chemicals, Inc. Retrieved from http://www.msi-us.net/productdetail.cfm?id=265 on Oct. 26, 2006.
Jonker, B.T., “Progress Toward Electrical Injection of Spin Polarized Electrons into Semiconductors,” Proceeding of the IEEE, vol. 91, No. 91, May 2003, pp. 727-740.
U.S. Appl. No. 11/096,040, filed Mar. 30, 2005, Non-Final Office Action dated Aug. 25, 2006.
Final Office Action mailed on Jan. 8, 2007, U.S. Appl. No. 11/096,040, filed on Mar. 30, 2005, Salib et al.
Nikonov Dmitri E.
Salib Michael S.
Blakely , Sokoloff, Taylor & Zafman LLP
Pak Sung
Petkovsek Daniel
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