Driving circuit for electro-absorption optical modulator

Details Driving circuit for electro-absorption optical modulator Driving circuit for electro-absorption optical modulator

1998-03-13

1999-07-27

Epps, Georgia

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359181, 359247, B02F 103, H04B 1004

Patent

active

059300221

ABSTRACT:
Disclosed is a driving circuit for an electro-absorption optical modulator for outputting intensity-modulated signal light by receiving carrier light from a light source and absorbing the carrier light in dependence upon a driving voltage. The driving circuit includes a driving unit for applying a pulsed driving voltage to an electro-absorption optical modulator, and a variable impedance unit connected in parallel with the electro-absorption optical modulator for matching impedance with respect to the driving unit. The impedance of the variable impedance unit is switched to one value when the driving voltage is applied to the electro-absorption optical modulator and to another value when the driving voltage is not applied to the electro-absorption optical modulator so as to match impedance with respect to the driving unit.

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