WAVELENGTH AGILE OPTICAL RECEIVING DEVICE WAVELENGTH AGILE OPTICAL RECEIVING DEVICE

A wavelength agile optical receiving device can be used in an optical equivalent of an "order wire" data communication system. The receiving device includes an acoustooptic grating (10) which can be tuned to deflect optical signals received at a particular wavelength by changing a drive si...

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Bibliographic Details
Main Author STILWELL, GEORGE RAYMOND, JR
Format Patent
LanguageEnglish
Published 25.04.1990
Edition4
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
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FREQUENCY-CHANGING
MULTIPLEX COMMUNICATION
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
TRANSMISSION
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Summary:A wavelength agile optical receiving device can be used in an optical equivalent of an "order wire" data communication system. The receiving device includes an acoustooptic grating (10) which can be tuned to deflect optical signals received at a particular wavelength by changing a drive signal produced by an acoustic transducer (12). A multiwavelength optical signal (14) is applied to the grating. Under "order wire" or quiescent conditions, light at an order wire wavelength is deflected onto a split optical detector (16) . A processor (32) is employed to select control signals for a voltage controlled oscillator (34) which drives the acoustic transducer (12) . The processor (32) can cause the transducer output to be changed to provide deflection of optical energy at a selectable wavelength onto the detector (16).
Bibliography:Application Number: EP19870118163