LIGHT INTENSITY MODULATOR

Japanese Patent JP2013238790

A

To provide a light intensity modulator capable of making good use of a short electrode length of an electric-field absorption type light intensity modulator, and achieving negative chirp properties in a lumped-constant type light intensity modulator.

There is provided a Mach-Zehnder interferometer type light intensity modulator including: a phase modulator P which is mounted on a first arm waveguide A1, can change phases of guided light, reflecting an external electric signal, and is achieved by forming an electrode on an optical waveguide; and an electric-field absorption type light intensity modulator M which is mounted on a second arm waveguide, which absorbs or transmits guided light, reflecting the external electric signal, and is achieved by forming an electrode on an optical waveguide. The Mach-Zehnder interferometer type light intensity modulator is composed of an optical circuit which makes input light branch into two and after that, multiplexes the light again.

WO/2001/058055	OPTICAL FREE SPACE SIGNALLING SYSTEM
JP6414306	Manufacturing method of semiconductor devices, semiconductor devices
JP2002277910	SATURABLE OPTICAL ABSORBER AND APPLICATION THEREOF TO REGENERATION OF WAVELENGTH DIVISION MULTIPLEXED SIGNAL

UEDA YUTA
FUJISAWA TAKESHI
ISHII HIROYUKI

JP2012112879A

November 28, 2013

May 16, 2012

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NIPPON TELEGRAPH & TELEPHONE

G02F1/017

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Patent Business Corporation Tani/Abe Patent Office

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