Control concept for a multistage polarization mode...

Details Control concept for a multistage polarization mode... Control concept for a multistage polarization mode...

2007-04-24

2007-04-24

Li, Shi K. (Department: 2613)

Optical communications

Transmitter and receiver system

Including optical waveguide

C398S029000

Reexamination Certificate

active

10238452

ABSTRACT:
An apparatus is provided for compensating for polarization mode dispersion which is caused during transmission of a light wave via an optical waveguide, to an optical communication network having such an apparatus, and a method for compensating for polarization mode dispersion which is caused during transmission of a light wave via an optical waveguide is also provided. The apparatus has at least one first and one second polarization mode dispersion compensation device, and a control device which controls at least the first polarization mode dispersion compensation device, with the light wave being supplied first of all to the first compensation device, which at least partially carries out polarization mode dispersion compensation on the supplied light wave, and with the light wave which is emitted from the first compensation device then being supplied to the second compensation device, which carries out further polarization mode dispersion compensation on the light wave, wherein the apparatus has a PMD detection device, which provides information relating to the polarization mode dispersion of the light wave that is emitted from the first compensation device, and the first compensation device is controlled by the control device using the information relating to the polarization mode dispersion of the light wave that is emitted from the first compensation device.

REFERENCES:
patent: 5930414 (1999-07-01), Fishman et al.
patent: 6385357 (2002-05-01), Jopson et al.
patent: 6654103 (2003-11-01), Yu et al.

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