Optical nonreciprocal device

Details Optical nonreciprocal device Optical nonreciprocal device

1988-07-21

1990-12-04

Arnold, Bruce Y.

350403, G02B 530

Patent

active

049749447

ABSTRACT:
An optical non-reciprocal device is disclosed for passing light in the forward direction and for reducing light passing in the reverse direction. Three anisotropic crystal members are arranged in a linear array. Each member has a walk off direction for separating light into ordinary and extraordinary rays. At least one non-reversible rotation element is interposed between every two adjacent anisotropic crystal members. Rotations of the elements and the orientations and thicknesses of the anisotropic crystal members are such that light in the forward direction is separated into ordinary and extraordinary rays which substantially do not superpose each other upon emerging from the device so that light passing in the reverse direction is reduced in a manner which is substantially insensitive to temperature and wavelengths of the light passing in either direction.

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