Push-pull modulator driver circuits

Details Push-pull modulator driver circuits Push-pull modulator driver circuits

H - Electricity

04

B

H04B 10/145 (2006.01) G02F 1/01 (2006.01) G02F 1/03 (2006.01) H03K 17/687 (2006.01) G02F 1/017 (2006.01)

Patent

CA 2146800

A drive circuit for increasing the voltage range applied across optical modulators in a transmitter stage of an optical communication system. The circuit comprises a first switch and a second switch connected thereto. The first switch is responsive to a first input signal and has a maximum voltage drop equal to a first reference voltage. The second switch is responsive to a second input signal and has a maximum voltage drop equal to a second reference voltage. A modulator is connected between the first and second switches so that, depending on the values of the first and second input signals, the maximum voltage drop across the modulator will be a value greater than either the first or the second reference voltage.

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