OPTICAL WAVEGUIDE MODULE

PROBLEM TO BE SOLVED: To provide an optical waveguide module in which temperature of an optical waveguide chip can be stably controlled at low power consumption. SOLUTION: An optical waveguide chip 9 having an optical waveguide circuit such as an array waveguide grating having the transmittance char...

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Bibliographische Detailangaben
Hauptverfasser:	OTA TOSHIHIKO, SAWAMURA TAKESHI, WATANABE TOMOHIRO, SAITO TSUNEAKI
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 LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an optical waveguide module in which temperature of an optical waveguide chip can be stably controlled at low power consumption. SOLUTION: An optical waveguide chip 9 having an optical waveguide circuit such as an array waveguide grating having the transmittance characteristics variable by at least temperature, a temperature detecting element 30 to detect the temperature of the optical waveguide chip 9, and a temperature control module 8 to control the temperature of the optical waveguide chip 9 based on the detected temperature of the temperature detecting element 30 are fabricated. The temperature control module 8 and the optical waveguide chip 9 are superposed and directly joined to each other. The temperature detecting element 30 is placed at a position to detect the temperature of a position apart from the center position C1 of the optical waveguide circuit of the optical waveguide chip 9 so that a shift of the transmission center wavelength of the optical waveguide chip caused by warpage of the temperature control module 8 is decreased by a shift of the transmission center wavelength of the optical waveguide chip 9 based on the temperature difference between the detected temperature and the temperature at the center position C1. COPYRIGHT: (C)2006,JPO&NCIPI