Digital synthesis of readily compensated optical signals

Optical communications – Transmitter – Including compensation

Reexamination Certificate

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C398S159000, C398S194000

Reexamination Certificate

active

07321734

ABSTRACT:
A method and system for mitigating effects of dispersion in an optical link. A pair of digital sample streams are synthesized representing a target optical E-field having a spectrum selected such that the convolution of the spectrum with itself yields a signal having beat terms that contain phase information of the target optical E-field. A complex optical modulator is driven in accordance with the computed orthogonal sample values.

REFERENCES:
patent: 3935566 (1976-01-01), Snopko
patent: 5148503 (1992-09-01), Skeie
patent: 5301058 (1994-04-01), Olshansky
patent: 5311346 (1994-05-01), Haas et al.
patent: 5349312 (1994-09-01), Huettner et al.
patent: 5408498 (1995-04-01), Yoshida
patent: 5416626 (1995-05-01), Taylor
patent: 5446574 (1995-08-01), Djupsjobacka et al.
patent: 5513029 (1996-04-01), Roberts
patent: 5546210 (1996-08-01), Chraplyvy et al.
patent: 5579328 (1996-11-01), Habel et al.
patent: 5761225 (1998-06-01), Fidric et al.
patent: 5892858 (1999-04-01), Vaziri et al.
patent: 5949560 (1999-09-01), Roberts et al.
patent: 5999258 (1999-12-01), Roberts
patent: 5999300 (1999-12-01), Davies et al.
patent: 6067180 (2000-05-01), Roberts
patent: 6115162 (2000-09-01), Graves et al.
patent: 6124960 (2000-09-01), Garthe et al.
patent: 6128111 (2000-10-01), Roberts
patent: 6205262 (2001-03-01), Shen
patent: 6262834 (2001-07-01), Nichols et al.
patent: 6304369 (2001-10-01), Piehler
patent: 6441932 (2002-08-01), Helkey
patent: 6473013 (2002-10-01), Velazquez et al.
patent: 6559994 (2003-05-01), Chen et al.
patent: 6580532 (2003-06-01), Yao et al.
patent: 7023601 (2006-04-01), McGhan et al.
patent: 2001/0028760 (2001-10-01), Yaffe
patent: 2002/0018268 (2002-02-01), Price et al.
patent: 2002/0024694 (2002-02-01), Newell et al.
patent: 2002/0106148 (2002-08-01), Schemmann et al.
patent: 2002/0181052 (2002-12-01), Butman et al.
patent: 2003/0011847 (2003-01-01), Dai Fa et al.
patent: 0 524 758 (1993-01-01), None
patent: 0 971 493 (2000-01-01), None
patent: 1 223 694 (2002-07-01), None
patent: 1 237 307 (2002-09-01), None
patent: WO 01/03339 (2001-01-01), None
patent: WO 01/91342 (2001-11-01), None
patent: WO 02/43340 (2002-05-01), None
Adaptive Electronic Linearization of Fiber Optic Links, OFC 2003, vol. 2, pp. 477-480, Mar. 2003 Sadhwani et al.
Automated Measurement of Polarization Mode Dispersion Using Jones Matrix Eigenanalysis, IEE Photonics Technology Letters, vol. 4, No. 9, pp. 1066-1069, Sep. 1992, Heffner.
Chromatic Dispersion Mapping by Sensing the Power Distribution of Four-Wave Mixing Along the Fiber Using Brillouin Probing, OFC 2003, vol. 2, pp. 714-716, Herraez et al.
Design of Broad-Band PMD Compensation Filters, IEEE Photonics Technology Letters, vol. 14, No. 8, Aug. 2002, A. Eyal et al.
Dispersion Compensation by Active Predistorted Signal Synthesis, Journal of Lightwave Technology, vol. LT-3, No. 4, Aug. 1985, Thomas L. Koch and Rod C. Alferness.
Dispersion Compensation with an SBS-Suppressed Fiber Phase Conjugator Using Synchronized Phase Modulation, OFC 2003, vol. 2, pp. 716-717, M. Tani.
Electrical Signal Processing Techniques in Long-Haul Fiber-Optic Systems, 1990 IEEE-Transactions on Communications, vol. 38, No. 9, Jack H. Winters, et al.
Exact Compensation for both Chromatic Dispersion and Kerr Effect in a Transmission Fiber Using Optical Phase Conjuction, Journal of Lightwave Technology, vol. 14, No. 3, March.
High-Dynamic-Range Laser Amplitude and Phase Noise Measurement Techniques, IEEE Journal on Selected Topics in Quantum Electronics, vol. 7, No. 4, Jul./Aug. 2001, Ryan P. Sc.
Measurement of High-Order Polarization Mode Dispersion, IEEE Photonics Technology Letters, vol. 12, No. 7, Jul. 2000, Yi Li et al.
Mitigation of Dispersion-Induced Effects Using SOA in Analog Optical Transmission, IEEE Photonics Technology Letters, vol. 14, No. 8, Aug. 2002, Duk-Ho Jeon et al.
Performance of Smart Lightwave Receivers With Linear Equalization, Journal of Lightwave Technology, vol. 10, No. 8, Aug. 1992, John C. Cartledge, et al.
Polarization Effects in Lightwave Systems, Craig. D. Poole and Jonathan Nage, date unknown.
Polarization Modulated Direct Detection Optical Transmission Systesm, Journal of Lightwave Technology, vol. 10, No. 12, Dec. 1992.
Predistortion of Electroabsorption Modulators for Analog CATV Systems at 1.55 •m, Journal of Lightwave Technology, vol. 15, No. 9, Sep. 1997, Gordon C. Wilson et al.
Predistortion Techniques for Linearization of External Modulators, 1999 IEEE—Gordon Wilson, Lucent Technologies, NJ 07733, U.S.A.
Reduction of Dispersion-Induced Distortion in SCM Transmission Systems by Using Predistortion-Linearized MQW-EA Modulatirs, Journal of Lighwave Technology, vol. 15, No. 2, Fe.
Representation of Second-Order Polarisation Mode Dispersion, Electronics Letters, vol. 35, No. 19, Sep. 16, 1999, A. Eyal et al.
Signal Distortion and Noise in AM-SCM Transmission Systems Employing the Feedfrorward Linearized MQW-EA External Modulator, Journal of Lightwave Technology, vol. 15, No. 8, Aug. 1995, T. Iwai et al.
Soliton Transmission Using Periodic Dispersion Compensation, Journal of Lightwave Technology, vol. 15, No. 10, Oct. 1997, Nicholas J. Smith et al.
Theoretical Basis of Polarization Mode Dispersion Equalization up to the Second Order, Journal of Lightwave Technology, vol. 18, No. 4, Apr. 2000, Teruhiko Kudou et al.
H. Gysel et al. “Electrical Predistortion to Compensate for Combined Effect of Laser Chirp and Fibre Dispersion”, Electronics Letters IEE Stevenage vol. 27, No. 5, Feb. 1991.
A. Mecozzi et al. “Cancellation of timing and Amplitude Jitter in Symmetric Links Using Highly Dispersed Pulses”, IEEE Photonics Technology Letters, vol. 13, No. 5, May 2001.
Ram Sadhwani, Adaptive CMOS Predistortion Linearizer for Fiber-Optic Links, Journal of Lightwave Technology, vol. 21, No. 12, Dec. 2003.
P.S. Andre, et al., “Extraction of DFB Laser Rate Equation Parameters for Optical Simulation Pusposes”, Conftele 1999 ISBN 972-98115-0-4.
Lucas Illing, et al., “Shaping Current Waveforms for Direct Modulation of Semiconductor Lasers”, Institute for Nonlinear Science, U.C. San Diego, 2003.
P.M. Watts, et al., “Demonstration of Electrical Dispersion Compensation of Single Sideband Optical Transmission”, London Communications Symposium 2003, University College London, ISBN-09538863-63, Sep. 2003.
Hoon Kim, et al., “10 Gbit/s 177 km transmission over conventional singlemode fibre using a vestigial side-band modulation format” Electronics Letters, vol. 37, No. 25 Dec. 6, 2001 pp. 1533-1534.
Henning Bulow, et al., “Disperssion Mitigation Using a Fiber-Bragg-Grating Sideband Filter and a Tunable Electronic Equalizer”, Optical Society of America, 2000.
M. Sieben, et al., “10Gbit/s optical single sideband system” Electronics Letters, vol. 33, No. 11, May 22, 1997, pp. 971-973.
Schaffer, Troy A. et al “A 2GHz 12-bit Digital-to-Analog Converter for Direct Digital Synthesis Applications”, GaAs IC Symposium, pp. 61-64.
Kamoto, T. et al “An 8-bit 2-ns Monolithic DAC”, IEEE Journal of Solid-State Circuits, Feb. 1988, vol. 23, No. 1.
Feldhaus, G: “Volterra Equalizer for Electrical for Electrical Compensation of Dispersion and Fiber Nonlinearities”, Journal of Optical Communications, Fachverlag Schiele & Schon, Berlin, De, vol. 23, No. 3, Jun. 2002, pp. 82-84, XP001130377, ISSN: 0173-4911.

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