Patent
1988-05-04
1990-01-16
Bovernick, Rodney B.
350375, 350378, G02B 632, G02B 530, G02F 100
Patent
active
048938904
ABSTRACT:
A low-loss, high-isolation, fiber-optic isolator for use in single-mode fiber systems utilizes a Faraday rotator and two polarizers, one at each end angularly oriented from each other at the angle of rotation for isolation, and two aspheric lens connectors to couple optical fibers to the Faraday isolator to reduce forward loss to about 2.6 dB and improve isolation to greater than 70 db.
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Shirasaki et al., "Compact Optical Isolator for Fibers Using Birefringent Wedges", Applied Optics, vol. 21, no. 23, 1982, pp. 4296-4299.
Matsumoto, "Polarization-Independent Isolators for Fiber Optics", Electronics and Communications in Japan, vol. 62-C, No. 7, 1979 pp. 113-118.
Carroll, James P., Messbauer, Frederick B., Whitfield, Charles H., Design Considerations of the Expanded Beam Lamdek Single-Mode Connector, Lamdek Fiber Optics, A Division of Eastman Kodak Co., presented at FOC/LAN 85, San Francisco, Calif., Sep. 1985.
Bovernick Rodney B.
Shafer R. D.
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