Optical modulator and transmitter

Details Optical modulator and transmitter Optical modulator and transmitter

2007-09-21

2009-12-01

Wong, Tina M (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S003000, C385S011000

Reexamination Certificate

active

07627213

ABSTRACT:
To reduce wavelength chirp and produce multi-valued signal light that can be readily demodulated on a receiver side, a Mach-Zehnder type optical modulator includes an incident waveguide that branches input light, a pair of optical waveguides that respectively transmit the branched light and exhibit an electro-optic effect, a pair of signal electrodes arranged along the optical waveguides, and an exit waveguide that outputs an interfered light of the light transmitted through the optical waveguides. Furthermore, at a boundary, the polarity of each of the optical waveguides reverses, and either the optical waveguides or the signal electrodes cross each other.

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