Polarization controller

Details Polarization controller Polarization controller

1988-05-02

1990-02-06

Gonzalez, Frank

350 9613, 350392, G02B 610

Patent

active

048984418

ABSTRACT:
A polarization controller comprises a plurality of devices connected in series to each other. Each device includes an optical channel waveguide which is common to the plurality of the devices, and an electrode positioned on the optical channel waveguide and two electrodes positioned on both sides of the optical channel waveguide. A retardation induced by electrooptic effect in each device is adjusted by voltages applied to the electrode and the two electrodes. The voltages are not kept increasing or decreasing, but changed periodically so that there is no limitation in an operating range for controlling a polarization of light which is propagated through the optical channel waveguide.

REFERENCES:
patent: 3877781 (1975-04-01), Kaminow
patent: 4262994 (1981-04-01), Sheem
patent: 4533207 (1985-08-01), Alferness
patent: 4691984 (1987-09-01), Thaniyavarn
patent: 4775208 (1988-10-01), Robinson et al.
"Optical Waveguide Polarization Controller in Z-Propagation LiNbO.sub.3 ", National Conference Record, 1986, Optical and Radio Wave Electronics, the Institute of Electronics and Communication Engineers of Japan.

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