Optical waveguides – Integrated optical circuit
Reexamination Certificate
2007-02-20
2007-02-20
Wood, Kevin S. (Department: 2874)
Optical waveguides
Integrated optical circuit
C385S024000
Reexamination Certificate
active
10097187
ABSTRACT:
A system includes an optical transmitter that outputs an optical signal having a substantially Gaussian waveform and an optical receiver that is optically coupled to the optical transmitter and has an impulse response essentially matching the waveform. The impulse response and waveform preferably match in the time domain. The transmitter and receiver may be average-power-limited, using, for example, an erbium-doped fiber amplifier. To achieve a high signal-to-noise ratio, the waveform may be designed to minimize jitter, sample duration, matching parasitics, and inter-symbol interference (ISI). Such a waveform may be a return-to-zero (RZ) Gaussian or Gaussian-like waveform and may be transmitted in a variety of modulation formats. Further, the system may be used in WDM or TDM systems. A method for characterizing the time domain impulse response of an optical element used in the optical receiver is provided, where the method is optionally optimized using deconvolution and/or cross-correlation techniques.
REFERENCES:
patent: 4941738 (1990-07-01), Olsson
patent: 5038359 (1991-08-01), Pepper et al.
patent: 5191627 (1993-03-01), Haas et al.
patent: 5263037 (1993-11-01), Trutna, Jr. et al.
patent: 5268787 (1993-12-01), McIntyre
patent: 5295016 (1994-03-01), Van Deventer
patent: 5303314 (1994-04-01), Duling, III et al.
patent: 5311603 (1994-05-01), Fidric
patent: 5448579 (1995-09-01), Chang et al.
patent: 5574739 (1996-11-01), Carruthers et al.
patent: 5601083 (1997-02-01), Anderson
patent: 5689595 (1997-11-01), Pan
patent: 5734667 (1998-03-01), Esman et al.
patent: 5880877 (1999-03-01), Fermann et al.
patent: 6104528 (2000-08-01), Hwang
patent: 6164540 (2000-12-01), Bridgelall et al.
patent: 6195200 (2001-02-01), DeMarco et al.
patent: 6384966 (2002-05-01), Dymott
Shingo Kawai, hiroji Masuda, Ken-Ichi Suzuki, Kazuo Aida,NTT Optical network Systems Laboratories, 1-1 Hikari-no-oka, Yokosuka, Kanagawa, 239 Japan.
A. K. Srivastava, “Wide bandwidth high capacity systems”, OFC/IOOC '99, v. 4, p. 59-60, Feb. 1999.
S. Kinoshita, “Advances in optical fiber amplifiers for WDM systems”, APCC/OECC '99, v. 2, p. 1333-1334, Oct. 1999.
A. E. Willner, “SNR analysis of crosstalk and filtering effects in an amplified multichannel direct-detection dense-WDM system”, IEEE Photonics Technology Letters, p. 186-189, v. 4, Feb. 1992.
H. L. Van Trees, in Detection, Estimation, and Modulation Theory, pp. 1-15, 224-271, Part 1, Wiley, New York 1968.
A. Hasegawa, Y. Kodama, and A. Maruta, “Recent progress in dispersion-managed soliton transmission technologies”, Optical Fiber Technology 3, 197-213, 1997.
S. B. Alexander, in “Optical Communication Receiver Design,” pp. 273-283, 292-310, SPIE Optical Engineering Press, Bellingham, Washington, USA, 1997.
E. Desurvire, in Erbium Doped Fiber Amplifiers, pp. 155-187, John Wiley & Sons, New York, 1994.
S. Shapiro, in Ultrashort Light Pulses, Picosecond Techniques and Applications, pp. 83-122, Springer Verlag, NY, 1977.
B. P. Nelson and N. J. Doran, “Optical Sampling Oscilloscope Using Nonlinear Fibre Loop Mirror”, Electronic Letters, p. 204-205, v. 27, No. 3, Jan. 31, 1991.
N. S. Patel et. al, “Optical Rate Conversion for High-Speed TDM Networks”, IEEE Photonics Technology Letters, p. 1277-1279, v. 9, No. 9, Sep. 1997.
U. Wagemann, “Photonic All-parameter Analyzer”, product note, Agilent Technologies, 2001.
R. Trebino, et. al., “Measuring ultrashort laser pulses in the time-frequency domain using frequency-resolved optical gating”, Rev. Sci. Instrum. 68 (9), Sep. 1997, pp. 3277-3295.
M. Kuznetsov and D. O. Caplan, “Time-frequency analysis of optical communication signals and the effects of second and third order dispersion”, CLEO, May 2000.
F. Koyama and K. Iga, “Frequency Chirping in External Modulators”, IEEE Journal of Lightwave Technology, v. 6, No. 1, Jan. 1988.
Caplan, D.O., Quantum-Limited Optical Communications, Division Seminar: QL Comm, Group 67—Optical Comm. Tech., Mar. 27, 2001.
Caplan, D.O., et al., “A high-power high-gain single-polarization EDFA”,Lasers and Electro-Optics, 2000(CLEO2000), CWJ3, pp. 283-284, May 7-12, 2000, ISBN 1-55752-634-6. (Abstract attached).
Caplan, D.O., et al., “High-Sensitivity variable-rate transmit/receive architecture”,IEEE LEOS '99, TuU 0003, 1999, pp. 297-298.
Duling, I.N., III, et al., “Single-Polarisation Fibre Amplifier,”Elec. Let., 28(12): 1126-1128 (1992).
Glassner, David S., et al., “Spatial hole burning in erbium fiber lasers using Faraday rotator mirrors,”OFC '97 Technical Digest, paper TuN3, pp. 66-67.
Hakimi, F. et al., :High-power single-polarization EDFA with wavelength multiplexed pumps, CLEO '98, CWK1, 1998, pp. 287-288.
Tashiro, Y. et al., “high-power erbium-doped fiber amplifier pumped by wavelength multiplexed semiconductor laser diode unit,”Optical Fiber Communication, OFC '97Conference in 1997, pp. 107-108.
P.C. Becker et al., Erbium-Doped Fiber Amplifiers Fundamentals and Technology, Academic Press, San Diego, CA 1997.
P. S. Henry, “Error-rate performance of optical amplifiers,”in Proc. OFC'89, Houston, TX, Feb. 1989.
J. C. Livas, “High sensitivity optically preamplified 10 Gb/s receivers”, Proceedings of the Optical Fiber Communication Conference 1996, post deadline paper PD4, 1996.
P. A. Humblet, “Design of optical matched filters”, Globecom '91.
H. Geiger, M. Ibsen, R. I. Laming, “Optimum receivers with fiber gratings”, OFC 1998.
P. A. Humblet and M. Azizoglu, “On bit error rate of lightwave systems with optical amplifiers”, Journal of Lightwave Technology, vol. 9, No. 11, Nov. 1991.
M. L. Stevens, D. M. Boroson, D. O. Caplan, “A Novel Variable-rate Pulse-position Modulation System with Near Quantum Limited Performance”, LEOS, Nov. 1999.
S. R. Chinn, D. M. Boroson, J. C. Livas, “Sensitivity of optically preamplified DPSK receivers with Fabry-Perot filters”, Journal of Lightwave Technology, vol. 14, No. 3, Mar. 1996.
W. A. Atia and R. S. Bondurant, “Demonstration of return-to-zero signaling in both OOK and DPSK formats to improve receiver sensitivity in an optically preamplified receiver”, LEOS, Nov. 1999.
Atia Walid A.
Caplan David O.
Hamilton, Brook, Smith, Smith & Reynolds, P.C.
Massachusetts Institute of Technology
Wood Kevin S.
LandOfFree
Methods of achieving optimal communications performance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods of achieving optimal communications performance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of achieving optimal communications performance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3877639