Thermo-optical switch provided with a laterally shifted element

The invention pertains to a thermo-optical switch comprising at least one input channel, one output channel, two switching channels, and one heating element, where for at least part of the cross-sections of the switch the position of the heating element has been selected such that the difference in...

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Bibliographic Details
Main Authors PROPSTRA, KORNELIS, BORREMAN, ALBERT, HOEKSTRA, TSJERK HANS
Format Patent
LanguageChinese
English
Published 21.10.1999
Subjects
BASIC ELECTRIC ELEMENTS
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
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
RELAYS
SELECTORS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:The invention pertains to a thermo-optical switch comprising at least one input channel, one output channel, two switching channels, and one heating element, where for at least part of the cross-sections of the switch the position of the heating element has been selected such that the difference in effective refractive index, in the switched state, between two of the output channels in said cross-section is at least 80% of the maximally attainable difference. As a result, the load on the switches can be reduced substantially, increasing their lifespan.
Bibliography:Application Number: TW19970106778