OPTICAL WAVEGUIDE, OPTICAL MODULATOR, AND OPTICAL COMMUNICATION SYSTEM

OPTICAL WAVEGUIDE, OPTICAL MODULATOR, AND OPTICAL COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To improve modulation efficiency of an optical modulator by using an optical waveguide with a structure which lowers group velocity of light, and increasing an interaction effect with a modulation signal. SOLUTION: The optical modulator has an optical waveguide 6 composed of a...

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Bibliographische Detailangaben
1. Verfasser: ENOHARA AKIRA
Format: Patent
Sprache:eng
Schlagworte:
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Zusammenfassung:PROBLEM TO BE SOLVED: To improve modulation efficiency of an optical modulator by using an optical waveguide with a structure which lowers group velocity of light, and increasing an interaction effect with a modulation signal. SOLUTION: The optical modulator has an optical waveguide 6 composed of a material with an electro-optic effect, and a two-dimensional photonic structure 5 comprising a plurality of pits 3 arranged on a surface of the optical waveguide 6. Thereby the group velocity of the light passing through the optical waveguide is lowered even when no photonic band gap is generated, and consequently very high modulation efficiency is achieved by applying the waveguide to the optical modulator. COPYRIGHT: (C)2007,JPO&INPIT