ELECTRODE FOR OPTICAL MODULATION AND OPTICAL MODULATOR

Japanese Patent JP2004219600

A

To attain velocity matching and a small propagation loss with small electrode film thickness and to simultaneously reduce Vπ/L, the ratio of a drive voltage Vπ to the length of the electrode L, in the optical modulation electrode of an optical modulator.

A substrate main body 2 is composed of an electro-optic material and is equipped with one principal surface 2a and the other principal surface 2b facing each other. An optical modulation electrode 20A for applying voltage for modulating light propagating through optical waveguides 6A, 6B is disposed on the substrate main body 2. The electrode 20A includes earth electrodes 3A, 3B and a signal electrode 4. The ratio of the width W of the signal electrode 4 to the gap G between the earth electrodes 3A, 3B and the signal electrode 4, W/G, is 0.8 or more. Preferably, the thickness T of the substrate main body 4 is 20 μm or less in a region where the optical waveguides 6A, 6B are formed.

JPH04310918	SPACE LIGHT MODULATION SEMICONDUCTOR DEVICE
JP2003527626	[Title of the Invention] Optical wavelength division multiplex cross-connect incorporating an optical control type optical switch.
JP2007264313	ELECTROABSORPTION OPTICAL MODULATOR, SEMICONDUCTOR LASER, TRANSCEIVER, DRIVING METHOD, PROGRAM, RECORDING MEDIUM

AOKI KENJI
KONDO JUNGO
KONDO ATSUO
MITOMI OSAMU

JP2003005291A

August 05, 2004

January 14, 2003

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NGK INSULATORS LTD

G02F1/015; G02F1/03; G02F1/035; G02F1/225; (IPC1-7): G02F1/035; G02F1/015

JPH0764034A	1995-03-10
JPH05196902A	1993-08-06
JPH10274758A	1998-10-13
JPH06300995A	1994-10-28
JP2002040381A	2002-02-06
JPH10197836A	1998-07-31
JP2002169133A	2002-06-14

Masumi Hosoda
Juno Aoki

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