| 摘要 |
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.
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