Drive circuit for electro-absorption optical modulator and optic

Details Drive circuit for electro-absorption optical modulator and optic Drive circuit for electro-absorption optical modulator and optic

1995-12-11

1998-01-06

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359181, 372 38, H04B 1004

Patent

active

057061173

ABSTRACT:
An optical transmitter including a light source for outputting a carrier light, an electro-absorption optical modulator for absorbing the carrier light according to an applied voltage to thereby output an intensity-modulated signal light, a device for applying an offset voltage to the optical modulator so that the applied voltage enters a region where the generation of the carrier light in the light source is stable, and a device for receiving an input signal to superimpose a modulation signal corresponding to the input signal on the offset voltage. This optical transmitter prevents wavelength chirping of the light source due to residual reflection in the optical modulator to thereby allow improvement in waveform.

REFERENCES:
patent: 5394260 (1995-02-01), Suzuki et al.
patent: 5434693 (1995-07-01), Tanaka et al.

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