Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2003-05-29
2008-10-07
Tran, Dzung D (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S095000, C398S147000
Reexamination Certificate
active
07433599
ABSTRACT:
The automatic dispersion compensation device of the present invention comprises a unit measuring the transmission quality of incoming optical signals for one or more channels input from a transmission line and a unit separating and detecting the transmission quality degradation due to chromatic dispersion, in the measurement result of the unit from degradation due to other factors and controlling a variable chromatic dispersion compensator (VDC) in such a way as to compensate for that degradation.
REFERENCES:
patent: 5608562 (1997-03-01), Delavaux et al.
patent: 6483958 (2002-11-01), Bandemer et al.
patent: 6681082 (2004-01-01), Tanaka et al.
patent: 6871024 (2005-03-01), Nishimoto et al.
patent: 6909851 (2005-06-01), Ishikawa
patent: 2002/0015207 (2002-02-01), Ooi et al.
patent: 2002/0018267 (2002-02-01), Sun et al.
patent: 1 030 472 (2000-08-01), None
patent: 7-221705 (1995-08-01), None
patent: 9-72827 (1997-03-01), None
patent: 9-326755 (1997-12-01), None
patent: 11-8590 (1999-01-01), None
patent: 2001-77756 (2001-03-01), None
patent: 2002-208892 (2002-07-01), None
patent: 01/86840 (2001-11-01), None
patent: 01/93466 (2001-12-01), None
Office Action for European Patent Application No. 03 011 116.5, mailed Nov. 16, 2005.
Shirasaki et al., “Variable Dispersion Compensator Using the Virtually Imaged Phased Array (VIPA) for 40-Gbit/s WDM Transmission Systems”, ECOC2000, PD Topic 2,2.3.
Horst et al., “Tunable Ring Resonator Dispersion Compensators Realized in High-Refractive-Index Contrast SiON Technology”, IBM Research, Zurich Research Laboratory, CH-8803, ECOC2000, PD Topic 2,2.2.
Fells et al., “Twin Fibre Grating Adjustable Dispersion Compensator for 40 Gbit/s”, Nortel Networks, ECOC2000, PD Topic 2,2.4.
Winters et al., “Optical equalization of polarization dispersion”, AT&T Bell Laboratories, SPIE, vol. 1787, 1992, pp. 346-357.
Takahashi et al., “Automatic compensation technique for timewise fluctuating polarization mode dispersion in in-line amplifier systems”, Electronic Letters, vol. 30, No. 4, 1994, pp. 348-349.
Ono et al., “Polarization Control Method for Suppressing Polarization Mode Dispersion Influence in Optical Transmission Systems”, IEEE Journal of Lightwave Technology, vol. 12, No. 5, May 1994, pp. 891-898.
Akiyama et al., “Automatice Dispersion Equalization in 40 Gbit/s Transmission by Seamless-Switching Between Multiple Signal Wavelengths”, ECOC'99, 1999, pp. I-150-151.
Kawabata, Shuichi, “Method of Displaying and Measuring Polarization State”, Optronics, vol. 5, 1997, pp. 109-117.
Kikuchi et al.,“Polarization-Mode Dispersion (PMD) Detection Sensitivity of Degree of Polarization Method for PMD Compensation”, ECOC'99, 1999, pp. II-8-9.
Office Action for Chinese Patent Application No. 03138571.0; Jun. 10, 2005.
European Search Report for EP 03 01 1116; Jun. 30, 2005.
Ishikawa George
Ooi Hiroki
Takahara Tomoo
Fujitsu Limited
Staas & Halsey , LLP
Tran Dzung D
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