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Patent Searching and Data


Title:
SYSTEM AND METHOD FOR MEASUREMENT OF THE STATE OF POLARIZATION OF AN OPTICAL SIGNAL IN A FIBRE
Document Type and Number:
WIPO Patent Application WO2002066940
Kind Code:
A3
Abstract:
A system for measuring the state of polarization (SOP) of an optical signal. The system includes a tunable local oscillator providing a local optical signal. A polarization transformer is operatively connected to the local oscillator and transforms the local optical signal to a selected one of a plurality of polarizations. A coupler combines an optical signal from the polarization transformer with an input optical signal from an optical system. A heterodyne detector is operatively connected to the coupler to detect the beat frequency of the signal from the coupler and provide an output signal that can be utilized to determine the state of polarization of an input optical signal.

Inventors:
CHOWDHURY DIPAKBIN Q
ROUDAS IOANNIS
VODHANEL RICHARD S
Application Number:
PCT/US2002/002126
Publication Date:
November 13, 2003
Filing Date:
January 25, 2002
Export Citation:
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Assignee:
CORNING INC (US)
International Classes:
G01J4/04; G01M11/00; (IPC1-7): G01J4/04; G01M11/00; H04B10/18
Foreign References:
EP0716516A11996-06-12
GB2248990A1992-04-22
Other References:
OKOSHI T ET AL: "NEW POLARISATION-CONTROL SCHEME FOR OPTICAL HETERODYNE RECEIVER USING TWO FARADAY ROTATORS", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 21, no. 18, 29 August 1985 (1985-08-29), pages 787 - 788, XP000560613, ISSN: 0013-5194
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