Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-06-17
1994-05-10
Chilcot, Jr., Richard E.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359161, 359173, 25022717, 371 204, H04B 1000
Patent
active
053113462
ABSTRACT:
The polarization-dependent distortion of an optical signal transmitted through an optical fiber is reduced by aligning the polarization of the optical signal to minimize the received signal distortion. A polarization controller (a device which can change the polarization of light in an optical fiber) may be located at either the input or output end of a long haul optical fiber system and is used to align the polarization of the signal to minimize the received signal distortion. Automatic operation of the polarization controller can be obtained by using a steepest-descent method based on a distortion measure of the received signal for the optical signal transmitted through the optical fiber to generate control signals which are used to control the polarization controller.
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Haas Zygmunt
Poole Craig D.
Santoro Mario A.
Winters Jack H.
AT&T Bell Laboratories
Chilcot Jr. Richard E.
Negash K.
Weiss Eli
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