Optics: measuring and testing – By light interference – Having polarization
Reexamination Certificate
2005-11-01
2005-11-01
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
Having polarization
C356S484000, C356S490000, C356S364000
Reexamination Certificate
active
06961130
ABSTRACT:
A polarization control system includes a beam source that generates a first beam component containing light with a first polarization and a first frequency and a second beam component containing light with a second polarization and a second frequency. A polarization state modulator adjusts the polarizations of the components for transmission on a single optical fiber. A detector system measures polarizations of the components when output from the optical fiber and determines how to adjust the polarization state modulator in order to give the first and the second components the desired output polarization states. The beam source can be implemented using a Zeeman-split laser, a laser containing a birefringent element, a pair of phase-locked lasers, and/or a variety of configurations of electro-optic or acousto-optic crystals operated to create or enhance the frequency difference between the beam components.
REFERENCES:
patent: 4684828 (1987-08-01), Sommargren
patent: 4687958 (1987-08-01), Sommargren
patent: 4817206 (1989-03-01), Calvani et al.
patent: 4960319 (1990-10-01), Dankowych
patent: 5091912 (1992-02-01), Bretenaker et al.
patent: 5412474 (1995-05-01), Reasenberg et al.
patent: 5416628 (1995-05-01), Betti et al.
patent: 5485272 (1996-01-01), Dirksen et al.
patent: 5586133 (1996-12-01), Sommargren
patent: 5862164 (1999-01-01), Hill
patent: 5970077 (1999-10-01), Hill
patent: 6052186 (2000-04-01), Tsai
patent: 6157660 (2000-12-01), Hill
patent: 6452682 (2002-09-01), Hill et al.
Campbell, James P. and Steier, William H., “Rotating-Waveplate Optical-Frequency Shifting in Lithium Niobate,” IEEE Journal of Quantum Electronics, vol. QE-7, No. 9, pp. 450-457 (Sep. 1971).
Bagwell Kerry D.
Johnstone Eric S.
Law Joanne Y.
Nevis Elizabeth A.
Agilent Technologie,s Inc.
Punnoose Roy M.
Toatley , Jr. Gregory J.
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