G - Physics – 02 – F
Patent
G - Physics
02
F
345/24, 345/62
G02F 1/015 (2006.01) H01L 31/11 (2006.01) H01L 31/167 (2006.01) H03K 17/78 (2006.01)
Patent
CA 1153092
Abstract of the Disclosure In an optoelectronic switch, a photodiode is used as an optical-to-electrical converter in which a first semicon- ductor including a p-n junction is combined with a second semiconductor having a narrower energy band gap than the first semiconductor to form a heterojunction. When supplied with a light signal modulated by an electrical signal, the photodiode becomes ON or OFF depending upon the magnitude of a reverse bias voltage applied to said photodiode. A source for applying the bias voltage to the photodiode comprises two voltage sources of the same polarity or a single voltage source. The optoelectronic switch, has a high isolation ratio and broad transmission bandwidth, consumes little electrical power and produces low cross-talk levels when used in switching arrays.
366261
Hara Elmer H.
Kanbe Hiroshi
Macrae & Co.
Nippon Telegraph & Telephone Public Corporation
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