Optical modulation element module

Details Optical modulation element module Optical modulation element module

2005-09-23

2009-08-04

Rojas, Omar (Department: 2874)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S002000

Reexamination Certificate

active

07570843

ABSTRACT:
The present invention provides an optical modulation element module which is capable of the optical modulation for analog transmission with a low driving voltage and low chirp.An optical modulation element module, in which Mach-Zehnder type optical modulation element50having a Mach-Zehnder type waveguide unit having two branched waveguides on a substrate which has electro-optical effect and two modulation electrodes which apply a modulation signal to each branched waveguide, optical input and output units for inputting and outputting a light wave to and from the optical modulation element, and a modulation signal input unit56for inputting the modulation signal into the modulation electrodes are placed in a case51, includes a transformer branching unit57in which the modulation signal input unit which corresponds to the two modulation electrodes is formed as one terminal and which divides the modulation signal from the modulation signal input unit into two signals, and applies the divided modulation signals to each modulation electrode.

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patent: 2003-202530 (2003-07-01), None

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