Optical device

Details Optical device Optical device

1981-12-11

1985-10-22

Punter, William H.

350388, 350403, G02F 129

Patent

active

045484783

ABSTRACT:
An optical device, such as an optical isolator or an optical modulator, comprises a 45.degree. Faraday rotator or an electrooptic crystal which is interposed between tapered plates of birefringent material for separating and combining polarized light. The tapered plates are made of rectile or calcite. The optical device is polarization independent, and it can be miniaturized with less components than prior art optical devices. The optical isolator also allows one hundred percent of light in the forward direction to pass through it. The optical modulator can be used as a voltage senser.

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Matsumoto, T., "Polarization-Independent Isolators for Fiber Optics", Electronics & Comm. in Japan, vol. 62-C, #7, 1979, pp. 113-118.
Muller, Von R., "Polarisiertes Licht Bis 1900 AE", Optik 20, 1963, pp. 510-511.
Bennett et al., "Handbook of Optics, Section 10", pp. 10-25, McGraw-Hill 1978.
Shurcliff, W. A., "Polarized Light", pp. 80-82, Harvard U. Press, 1962.

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