Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1992-09-29
1994-10-18
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
385 31, H01J 516
Patent
active
053571037
ABSTRACT:
A light receiving module and its manufacturing method of an excellent structure which can make a good and uniform optical couple between an optical fiber and a light receiving element, and can improve its productivity. The light receiving module comprises a semiconductor substrate, a light receiving element mounted on a surface of the semiconductor substrate, a groove formed on a back surface of the semiconductor substrate, an inclined face in the back surface side facing the light receiving element, and an optical fiber fixed in the groove. A transmitted light signal through the fiber is reflected by the inclined face. The inclined face is formed at a distal end of the optical fiber, at the closed end wall of the groove, or a side wall of a dimple arranged on the extension line of the groove. The reflected light is admitted to a light receiving face of the light receiving element, from the back surface side of the semiconductor substrate.
REFERENCES:
patent: 4210923 (1980-07-01), North et al.
patent: 4756590 (1988-07-01), Forrest et al.
patent: 4772787 (1988-09-01), Trommer
Patent Abstracts of Japan, vol. 10, No. 19 (P-423) (2076) 24 Jan. 1986 & JP-A-60 172 004 (Fujitsu K.K.) dated 5 Sep. 1985.
Patent Abstracts of Japan, vol. 5, No. 17 (P-47) (689) 31 Jan. 1981 & JP-A-55 145 408 (Nippon Denshin Denwa Kosha) dated 14 Nov. 1980.
Patent Abstract of Japan, vol. 12, No. 99 (E-594) (2946) 31 Mar. 1988 & JP-A-62 230 065 (Mitsubishi Electric Corp) dated 8 Oct. 1987.
Patent Abstracts of Japan, vol. 7, No. 51 (P-179) (1196) & JP-A-57 198 420 (Fujitsu K.K.) dated 6 Dec. 1982.
Nelms David C.
Sumitomo Electric Industries Inc.
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