Optical component and magnetic-field sensor using superposed sin

Details Optical component and magnetic-field sensor using superposed sin Optical component and magnetic-field sensor using superposed sin

1989-07-25

1991-01-15

Arnold, Bruce Y.

Optics: measuring and testing

Range or remote distance finding

With photodetection

350378, 350387, 350405, 356365, G02F 109, G02B 102

Patent

active

049848755

ABSTRACT:
An optical unit or an optical sensor through which a light beam is propagated in a predetermined direction, having an optical component which includes at least one first single crystal element each having a property of causing dextrorotation of a plane of polarization of the light beam during propagation of the beam, and at least one second single crystal element each having a property of causing levorotation of the plane of polarization of the light beam. The first and second single crystal elements are superposed on each other in a direction perpendicular to the direction of propagation of the beam. The single crystal elements may be bonded together by direct solid-solid reaction, or by diffusion of a material of a thin bonding film interposed between the adjacent single crystal elements. The single crystal elements also exhibit a magnetooptical or Faraday effect when used in a magnetic-field sensor, for example.

REFERENCES:
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patent: 4478872 (1984-10-01), Pulliam
patent: 4607916 (1986-08-01), Sanford et al.
Nicholas et al., "Diffusion Bonding Ceramics with Ductile Interlayer," Science of Ceramics 14, Ed. Derek Taylor, Institute of Ceramics, 1988, Shelton, UK, pp. 539-544.
Machida et al., "Temperature-Compensated Faraday Rotator for Optical Isolator," Optoelectronics, vol. 3, No. 1, pp. 99-105, Jun. 1988.
Patent Abstracts of Japan, vol. 8, No. 31 (P-253) [1468] [JP-A-58 186 705].

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