DETECTOR FOR FREQUENCY MULTIPLEX OPTICAL COMMUNICATION

PURPOSE:To provide a high frequency resolution to cover a wide wavelength range by providing a resonator which has transmission characteristics by positions of plural frequencies whose intervals are different from those of frequencies of plural transmission light. CONSTITUTION:A frequency selecting...

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Bibliographische Detailangaben
Hauptverfasser:	KAYANE NAOKI, SAKANO SHINJI
Format:	Patent
Sprache:	eng
Schlagworte:	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 DEVICES USING STIMULATED EMISSION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSMISSION
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a high frequency resolution to cover a wide wavelength range by providing a resonator which has transmission characteristics by positions of plural frequencies whose intervals are different from those of frequencies of plural transmission light. CONSTITUTION:A frequency selecting means which detects the light having a desired frequency from transmission light having plural frequencies is provided with a Fabry-Perot laser 3 which has oscillation characteristics in positions of plural frequencies whose intervals are different from those of frequencies of plural transmission light and a control means which controls this resonator to select the light having a desired frequency. It is preferable that a Fabry-Perot etalon resonator where the resonator length can be controlled spatially or by the change of the refractive index or a resonator where the equivalent resonator length can be controlled is used as this resonator. Thus, a wide wavelength range is covered for frequency multiplex optical communication.