Coherent light generators – Particular component circuitry – Optical pumping
Patent
1992-06-01
1993-09-21
Epps, Georgia Y.
Coherent light generators
Particular component circuitry
Optical pumping
372 31, 372 29, 372 26, H01S 3300
Patent
active
052475328
ABSTRACT:
A fiber optic transmitter circuit includes a DC bias circuit that produces a DC voltage, an amplifier circuit having data signal inputs and that produces a data signal and wherein the data signal and the DC voltage are supplied to a laser diode to stimulate the diode to produce light of a corresponding nature. The amplifier is selected so that the inherent noise level or noise figure characteristics of the amplifier are such as to provide stimulation of a single mode laser diode in the frequency band wherein the resonant frequency of the laser diode is typically found. The resulting impact of the noise on the laser diode is to transform the single mode laser diode into a multi-mode laser diode thereby reducing the impact of modal noise on the fiber optic data transmission system that incorporates the disclosed fiber optic transmitter device.
REFERENCES:
patent: 4357713 (1982-11-01), Blackburn et al.
patent: 4677632 (1987-06-01), Lisco et al.
patent: 4918396 (1990-04-01), Halemane et al.
patent: 5019769 (1991-05-01), Levinson
patent: 5146464 (1992-09-01), Uemura
patent: 5153765 (1992-10-01), Grunziger
Epps Georgia Y.
Finisar Corporation
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