Phase control optical FSK modulator

Details Phase control optical FSK modulator Phase control optical FSK modulator

2011-06-07

2011-06-07

Vanderpuye, Ken N (Department: 2613)

Optical communications

Transmitter

Having particular modulation

C398S187000, C398S186000, C398S192000, C398S195000

Reexamination Certificate

active

07957653

ABSTRACT:
There is provided an optical modulator capable of controlling the phase of a USB signal and the phase of an LSB signal of an optical FSK modulated signal. A modulation signal is applied to a main Mach-Zehnder electrode (or an electrode C) (11) of a main Mach-Zehnder waveguide (MZC) (8) to switch the USB signal and the LSB signal, and so FSK modulation can be made. In order to control the phase of the optical signal to be outputted from the main Mach-Zehnder waveguide (MZC) (8), bias voltage is applied to the main Mach-Zehnder electrode (11), and the phases of the USB signal and the LSB signal are controlled. By doing so, FSK modulation with adjusted phases can be performed.

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