OPTICAL CONTROL CIRCUIT

PURPOSE:To suppress the fluctuation in characteristics occurring in the DC drift generated in the waveguide type optical control circuit. CONSTITUTION:A directional coupler 14 is formed by providing the optical waveguides 12, 13 on a Z-Cut LiNbO3 substrate 11. Optical control electrodes 15, 16 are p...

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Bibliographic Details
Main Author MIYAGAWA TOSHIYA
Format Patent
LanguageEnglish
Published 11.06.1993
Subjects
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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Summary:PURPOSE:To suppress the fluctuation in characteristics occurring in the DC drift generated in the waveguide type optical control circuit. CONSTITUTION:A directional coupler 14 is formed by providing the optical waveguides 12, 13 on a Z-Cut LiNbO3 substrate 11. Optical control electrodes 15, 16 are provided on the optical waveguides 12, 13 and a switching voltage VS can be impressed thereto by a switch 19. After the substrate 11 is formed as a thin film, a bias electrode 18 is provided on the rear surface thereof and a bias voltage VB is impressed between the optical control electrodes 15 and 16. As a result, the optical control circuit with which the stable operation is obtainable is provided.
Bibliography:Application Number: JP19910334371