Optical communications – Multiplex – Polarization
Reexamination Certificate
2008-01-29
2008-01-29
Chan, Jason (Department: 2613)
Optical communications
Multiplex
Polarization
C398S051000
Reexamination Certificate
active
07324752
ABSTRACT:
An optical packet switch switches optical packets according to bit-rates at which the optical packets are provided. For example, optical packets that are received at similar bit-rates may be routed to a destination at separate time slots over a single channel wavelength, and optical packets that are received at different bit-rates may be routed to the destination over separate channel wavelengths. When optical packets are provided at different bit-rates on a plurality of input paths, optical packets provided at low bit-rates may be compacted before switching to the destination. Alternatively or additionally, the bit-rates of the optical packets may be balanced before switching to the destination. Bandwidth contention among optical packets may be resolved by polarizing optical packets originating from separate input paths in different polarization directions, and merging optical packets having different polarization directions onto a single switched channel wavelength. Compaction of optical packets may alternatively be employed for resolution of bandwidth contention. Related apparatus and methods are also described.
REFERENCES:
patent: 4626075 (1986-12-01), Chemla
patent: 4726010 (1988-02-01), Ali et al
patent: 4856093 (1989-08-01), Mohr
patent: 5170273 (1992-12-01), Nishio
patent: 5191457 (1993-03-01), Yamazaki
patent: 5194977 (1993-03-01), Nishio
patent: 5319484 (1994-06-01), Jacob et al
patent: 5325222 (1994-06-01), Jacob et al
patent: 5400322 (1995-03-01), Hunt et al
patent: 5416625 (1995-05-01), Cavaciuti et al
patent: 5452115 (1995-09-01), Tomioka
patent: 5457687 (1995-10-01), Newman
patent: 5479447 (1995-12-01), Chow et al
patent: 5557439 (1996-09-01), Alexander et al
patent: 5680490 (1997-10-01), Cohen et al
patent: 5712932 (1998-01-01), Alexander et al
patent: 5724167 (1998-03-01), Sabella
patent: 5739935 (1998-04-01), Sabella
patent: 5774244 (1998-06-01), Tandon et al
patent: 5867289 (1999-02-01), Gerstel et al
patent: 5900957 (1999-05-01), Van Der Tol
patent: 5953138 (1999-09-01), Ellis
patent: 6023360 (2000-02-01), Morioka et al
patent: 6108112 (2000-08-01), Touma
patent: 6204944 (2001-03-01), Uchiyama et al
patent: 6233082 (2001-05-01), Johnson
patent: 6288808 (2001-09-01), Lee et al
patent: 6314115 (2001-11-01), Delfyett et al
patent: 6404522 (2002-06-01), Handelman
patent: 6574018 (2003-06-01), Handelman
patent: 6763191 (2004-07-01), Handelman
patent: 2002/0003641 (2002-01-01), Hall et al.
patent: 2002/0186453 (2002-12-01), Yoo
patent: 2003/0156841 (2003-08-01), Chraplyvy et al.
patent: 2003/0215238 (2003-11-01), Milton et al.
patent: 2005/0053058 (2005-03-01), Fice et al.
Mining the optical bandwich for a terabit per second, Alan Eli Willner, IEEE Spectrum, Apr. 1997, pp. 32-41.
Record data-transmission rate reported at ECOC ′96, Paul Mortensen, Laser Focus World, Nov. 1996, pp. 40-42.
Multiple wavelengths exploit fiber capacity, Eric J. Lerner, Laser Focus World, Jul. 1997, pp. 119-125.
Advances in dense WDM push diode-laser design, Diana Zankowsky, Laser Focus World, Aug. 1997, pp. 167-171.
Multistage amplifier provides gain across 80 nm, Kristin Lewotsky, Laser Focus World, Sep. 1997, pp. 22-24.
Optical switching promises cure for telecommunications logjam, Jeff Hecht, Laser Focus World, Sep. 1998, pp. 69-72.
Wavelength-Division Multiplexed Systems and Applications, Mari W. Maeda, The Communications Handbook, Jerry D. Gibson, 1997, CRC Press, Inc., pp. 883-890.
WDM Local Area Networks, Kazovsky et al., IEEE LTS, May 1992, pp. 8-15.
Optical Switches Ease Bandwidth Crunch, EuroPhotonics, Rien Flipse, Aug./Sep. 1998, pp. 44-45.
Speed Demons: Is ‘Faster’ Better and Cheaper? Stephanie A. Weiss, Photonics Spectra, Feb. 1999, pp. 96-102.
Wavelength Lockers Keep Lasers in Line, Ed Miskovic, Photonics Spectra, Feb. 1999, pp. 104-110.
Optical switches pursue crossconnect markets, Hassaun Jones-Bey, Laser Focus World, May 1998, pp. 153-162.
Demand triggers advances in dense WDM components, Raymond Nering, Optoelectronics World, Sep. 1998, pp. S5-S8.
Optical Networks Seek Reconfigurable Add/Drop Options, Hector E. Escobar, Photonics Spectra, Dec. 1998, pp. 163-167.
Ultrafast Optical Switch Unveiled, Photonics Spectra, Michael D. Wheeler, Dec. 1998, p. 42.
Data express Gigabit junction with the next-generation Internet, John Collins et al, IEEE Spectrum, Feb. 1999, pp. 18-25.
Designing Broadband Fiber Optic Communication Systems, Juan F. Lam, Communication System Design, Feb. 1999.
Terabit/second-transmission demonstrations make a splash at OFC '96, Laser Focus World, Apr. 1996, p. 13.
Multigigabit Networks: The Challenge, Claude Rolland et al., IEEE LTS, May 1992, pp. 16-26.
Direct Detection Lightwave Systems: Why Pay More? Paul Green et al., IEEE LCS, Nov. 1990, pp. 36-49.
Photonics in Switching, H. Scott Hinton, IEEE LTS, Aug. 1992, pp. 26-35.
Advanced Technology for Fiber Optic Subscriber Systems, Hiromu Toba et al., IEEE LTS, Nov. 1992, pp. 12-18.
Fiber amplifiers expand network capacities, Eric J. Lerner, Laser Focus World, Aug. 1997, pp. 85-96.
Technologies for Local-Access Fibering, Yukou Mochida, IEEE Communications Magazine, Feb. 1994, pp. 64-73.
Wavelength Assignment in Multihop Lightwave Networks, Aura Ganz et al., IEEE Transactions on Communications, vol. 42, No. 7, Jul. 1994, pp. 2460-2469.
Wavelength-Division Switching Technology in Photonic Switching Systems, Suzuki et al., IEEE International Conference on Communications, ICC 1990, pp. 1125-1129.
Branch-Exchange Sequences for Reconfiguration of Lightwave Networks, Labourdette et al., IEEE Transactions on Communications, vol. 42, No. 10, Oct. 1994, pp. 2822-2832.
Use of Delegated Tuning and Forwarding in Wavelength Division Multiple Access Networks, Auerbach et al., IEEE Transactions on Communications, vol. 43, No. 1, Jan. 1995, pp. 52-63.
Design and Cost Performance of the Multistage WDM-PON Access Networks, Guido Maier et al., Journal of Lightwave Technology, vol. 18, No. 2, Feb. 2000, pp. 125-143.
Polarization Insensitive Widely Tunable All-Optical Clock Recovery Based on AM Mode-Locking of a Fiber Ring Laser, Wang et al., IEEE Photonics Technology Letters, vol. 12, No. 2, Feb. 2000, pp. 211-213.
Ultra-High-Speed PLL-Type Clock Recovery Circuit Based on All-Optical Gain Modulation in Traveling-Wave Laser Diode Amplifier, Satoki Kawanishi et al., Journal of Lightwave Technology, vol. 11, No. 12 Dec. 1993, pp. 2123-2129.
All-optical networks need optical switches, Jeff Hecht, Laser Focus World, May 2000, pp. 189-196.
Photons At Work: Optical Networks On The Rise, Lee Goldberg, Electronic Design, Mar. 22, 1999, pp. 56-66.
Asynchronous Time Division Switching, Achille Pattavina, The Communications Handbook, Jerry D. Gibson, 1997, CRC Press, Inc., pp. 686-700.
Multiple Access Methods for Communications Networks, Izhak Rubin, The Communications Handbook, Jerry D. Gibson, 1997, CRC Press, Inc., pp. 622-649.
Combining gratings and filters reduces WDM channel spacing, Pan and Shi, Optoelectronics World, Sep. 1998, pp. S11-S17.
Picosecond-Accuracy All-Optical Bit Phase Sensing Using a Nonlinear Optical Loop Mirror, Hall et al., IEEE Photonics Technology Letters, vol. 7, No. 8, Aug. 1995, pp. 935-937.
An Ultrafast Variable Optical Delay Technique, Hall et al., IEEE Photonics Technology Letters, vol. 12, No. 2, Feb. 2000, pp. 208-210.
Prescaled 6.3GHz clock recovery from 50Gbit/s TDM optical signal with 50GHz PLL using four-wave mixing in a travelling-wave laser diode optical amplifier, Kamatani et al., Electronics Letters, May 12, 1994, vol. 30, No. 10, pp. 807-809.
Variable optical delay line with diffraction-limited autoalignment, Klovekorn and Munch, Applied Optics, Apr. 1, 1998, vol. 37, No. 10, pp. 1903-1904.
Compact 40 Gbit/s optical demultiplexer using a GaInAsP optical amplifier, Ellis et al., Electronics Letters, Nov. 25, 1993, vol. 29, No. 24, pp. 2115-2116.
Lucent Upgrades WaveStar to 320-Channel, 800-Gb/s Transmission; Chalmers Develops 49-dB Optical Parametric Amplifier, Photonics Spectra, Jun. 2000, p. 46.
Bit-Rate Flexible All-Optical Demultiplexing Using a Nonlinear Optical L
Chan Jason
Curs Nathan
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