Jpn. J. Appl. Phys. 19 (1980) Supplement 19-1 pp. 443-449  |Previous Article| |Next Article|  |Table of Contents|
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11th Conf. (1979 Int.) Solid State Devices, Tokyo, 1979

(Invited) Materials and Devices for Long Wavelength Optical Communication

Yoshihiko Mizushima

Electrical Communication Laboratories, Nippon Telegraph and Telephone Public Corporation, Musashino-shi, Tokyo 180

Features of the optical glass fibers in the long wavelength range are briefly mentioned. The present experimental transmission system is outlined. The systems are aiming at either long distance or high speed transmission. The present states of the art of important devices, lasers, LEDs, detectors and isolators are reviewed. Particularly long life has been attained. Peculiar features of GaInAsP alloy are discussed, considering the quaternary compositional freedom and the flexible nature of In-containing alloy. From the physical point of view, several proposals are given.

URL: http://jjap.jsap.jp/link?JJAPS/19S1/443/


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