IN-CAVITY OPTICAL FOUR-WAVE MIXER USING SAME OBJECT AND OPTICAL COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To provide an improved quadruple wave mixer that can provide more intense inverted pulse with more compact constitution. SOLUTION: A light quadruple wave mixer for generating a phase-coupled signal is composed of a light source 9 of a light input signal, a fiber laser for recei...

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Bibliographische Detailangaben
Hauptverfasser:	KENESU RII UOOKAA, JIEFUAASON ERU WAJIENAA, JIEI RICHIYAADO SHINPUSON
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:	PROBLEM TO BE SOLVED: To provide an improved quadruple wave mixer that can provide more intense inverted pulse with more compact constitution. SOLUTION: A light quadruple wave mixer for generating a phase-coupled signal is composed of a light source 9 of a light input signal, a fiber laser for receiving the signal, and a detector 17 for selectively detecting a frequency shifted signal generated by the quadruple wave mixer. The laser is a rare earth doped fiber laser having a fiber cavity phase-adjusted to the input signal. The frequency shifted output signal has inverted spectral waveform compared to the input signal. The mixer can be formed in a compact form of short cavity length of 100m and can provide an inverted signal at the same intensity as the input signal so as to be a mixer particularly useful to provide inversion of spectrum to an optical communication system.