Optical waveguides – Polarization without modulation
Reexamination Certificate
2006-07-25
2006-07-25
Font, Frank G. (Department: 2883)
Optical waveguides
Polarization without modulation
C385S027000, C385S028000
Reexamination Certificate
active
07082229
ABSTRACT:
An apparatus for compensation or emulation of polarization mode dispersion (PMD) effects occurring in an optical signal traveling over an optical fiber based link comprises controllable birefringence sections and devices for polarization conversion. Each section comprises birefringence optical members or parts thereof, and each section is followed or preceded by one of the controllable devices for polarization conversion. The birefringence sections are at least three in number, and at least one of these has a propagation delay different from that of the other sections. The apparatus comprises a detection device for PMD output and control of the controllable devices for feedback adjustment.
REFERENCES:
patent: 5227623 (1993-07-01), Heffner
patent: 6724469 (2004-04-01), Leblanc
patent: 2001/0024538 (2001-09-01), Khosravani et al.
patent: 2001/0055437 (2001-12-01), Khosravani et al.
patent: 2003/0076588 (2003-04-01), Savory et al.
patent: 2003/0161568 (2003-08-01), El-Refaei et al.
patent: 2004/0096140 (2004-05-01), Zeng
patent: 198 16 178 (1999-10-01), None
patent: 0 909 045 (1999-04-01), None
patent: WO 01/48957 (2000-10-01), None
Sandel D., et al.,Automatic Polarisation Mode Dispersion Copensation in 40GBIT/S Optical Transmission System, Electronic Letters, IEE Stevenage, GB, Vo.. 34, No. 23, Nov. 12, 1998, pp. 2258-2259.
Noe, R., et al.,Polarization Mode Dispersion Compensation at 10, 20, and 40 BG/S With Various Optical Equalizers, Journal of Lightwave Technology, IEEE, New York, US, vol. 17, No. 9, Sep. 1999, pp. 1602-1616.
Noe, R., et al.,Polarization Mode Dispersion Compensation at 20 GB/S With Fiber-Based Distributed Equalizer, Internet Search for “DGD and PSP”, Nov. 13, 2000, pp. 1-2.
Corti Andrea
Fiorone Raoul
Galtarossa Andrea
Lorenzetto Giuseppe
Palmieri Luca
Font Frank G.
Hughes James P.
Kirschstein et al.
Marconi Communications SpA
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