Optical: systems and elements – Optical amplifier – Particular active medium
Reexamination Certificate
2007-12-12
2009-10-20
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Particular active medium
C359S333000
Reexamination Certificate
active
07605974
ABSTRACT:
An optical pulse position modulation receiver relying on the gain dynamics in a semiconductor optical amplifier (SOA). Optical PPM signal pulses and periodic optical clock pulses at a different frequency and/or polarization than the signal pulses are coupled into an SOA. Due to the high optical power of the clock pulses, the SOA gain will drop to a small value after each clock pulse. The SOA will then amplify each signal pulse that follows the clock pulse, and the gain will depend on the delay between the signal pulse and the preceding optical clock pulse. The optical output of the SOA can then be converted to an electrical signal by a photodetector.
REFERENCES:
patent: 4584720 (1986-04-01), Garrett
patent: 4923291 (1990-05-01), Edagawa et al.
patent: 4939474 (1990-07-01), Eisenstein et al.
patent: 5165077 (1992-11-01), Rokugawa et al.
patent: 5208455 (1993-05-01), Nelson et al.
patent: 5471335 (1995-11-01), Nitta
patent: 5717797 (1998-02-01), Evans
patent: 5742415 (1998-04-01), Manning et al.
patent: 5917649 (1999-06-01), Mori et al.
patent: 6424773 (2002-07-01), Watanabe
patent: 6462860 (2002-10-01), Ionov
patent: 6466703 (2002-10-01), Ionov
patent: 6574402 (2003-06-01), Zakharenkov et al.
patent: 6762878 (2004-07-01), Park et al.
patent: 6901177 (2005-05-01), Ionov
patent: 7076174 (2006-07-01), Watanabe et al.
patent: 7113329 (2006-09-01), DiJaili et al.
patent: 2002/0021462 (2002-02-01), Delfyett et al.
patent: 2002/0135867 (2002-09-01), Jackel
patent: 2003/0219195 (2003-11-01), Ionov
patent: 2005/0013543 (2005-01-01), Ionov
patent: 2007/0036553 (2007-02-01), Etemad et al.
patent: 0 521 671 (1993-01-01), None
patent: 01/95526 (2001-12-01), None
U.S. Appl. No. 10/735,071, filed Dec. 12, 2003, Ionov.
U.S. Appl. No. 10/973,696, filed Oct. 25, 2004, Ionov.
U.S. Appl. No. 11/033,571, filed Jan. 11, 2005, Ionov.
Petermann, K., “Basic Laser Characteristics,” Laser Diode Modulation and Noise, Kluwer Academic Publishers, Dordrecht/Boston/London, Chapter 2, pp. 4-59 (1988).
Agraval, G.P., “Optical Solitons,” Nonlinear Fiber Optics, Chapter Five, Academic Press, New York, pp. 133-152 (1995).
Bigo, S., et al., “All-Optical Fiber Signal Processing and Regeneration for Soliton Communications,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 3, No. 5, pp. 1208-1222 (Oct. 1997).
Black, H.S., Modulation Theory, D. Van Nostrand Company, Inc., New York, pp. 283-298 (1953).
Diez, S., et al., “Gain-Transparent SOA-Switch for High-Bitrate QTDM Add/Drop Multiplexing,” IEEE Photonics Technology Letters, vol. 11, No. 1, pp. 60-62, (Jan. 1999).
Haus, H.A., Waves and Fields in Optoelectronics, Prentice-Hall, Inc.,, Englewood Cliffs, New Jersey, pp. 216-220 (1984).
Schubert, C., et al., “160-Gb/s All Optical Demultiplexing Using a Gain-Transparent Ultrafast-Nonlinear Interferometer (GT-UNI),” IEEE Photonics Technology Letters, vol. 13, No. 5, pp. 475-477 (May 2001).
Schubert, C., et al., “Comparison of Interferometric All-Optical Switches for Demultiplexing Applications in High-Speed OTDM Systems,” Journal of Lightwave Technology, vol. 20, No. 4, pp. 618-624 (Apr. 2002).
Wang, D., et al., “Nonlinear Optical Loop Mirror Based on Standard Communication Fiber,” Journal of Lightwave Technology, vol. 15, No. 4, pp. 642-646 (Apr. 1997).
Bolda Eric
HRL Laboratories LLC
Ladas & Parry
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