Coherent light generators – Particular component circuitry – Optical pumping
Patent
1993-03-05
1994-12-06
Bovernick, Rodney B.
Coherent light generators
Particular component circuitry
Optical pumping
H01S 300
Patent
active
053717554
ABSTRACT:
An optical transmitter can communicate at a transmission speed exceeding Gb/s with a low bit error rate. An optical transmission module includes a semiconductor module having a semiconductor laser and an impedance matching element, a driver circuit for driving the semiconductor laser to emit an optical signal, and an optical fiber for transmitting the optical signal. The impedance matching element matches an impedance of the semiconductor laser module to an impedance of the driver circuit. The optical transmission module includes an impedance element for reducing an input impedance of the semiconductor laser module as viewed from the driving circuit in order to reduce a fall time of the optical signal. Impedance matching elements and are added to remove possible mismatching between the module and the driver circuit caused by a manufacturing error and to improve the yield of the module.
REFERENCES:
patent: 4060739 (1977-11-01), Russer et al.
patent: 4995044 (1991-02-01), Blazo
patent: 5111065 (1992-05-01), Roberge
patent: 5123024 (1992-06-01), Dowd et al.
patent: 5224111 (1993-06-01), Stilwell et al.
patent: 5241552 (1993-08-01), Bergmann
Collected Papers in the National Convention of the Institute of Electronics Information and Communication Engineers of Japan, 1989, Spring, pp. 4-100 In Japanese.
Matsudaira Nobuhiro
Murata Atsushi
Sato Yuuki
Bovernick Rodney B.
Hitachi , Ltd.
Hitachi Communication System Inc.
Wise Robert E.
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