COMPRESSOR FOR REVERSELY COMPRESSING SIGNAL AND METHOD FOR REVERSELY COMPRESSING SIGNAL

PROBLEM TO BE SOLVED: To apply a feedback algorithm in a way that pulse trains constituting compressed signals are reinputted with a time difference and sequentially reversely compressed through their circulation. SOLUTION: The loop mirror 35 is provided therein with a phase changing means 40 compri...

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Bibliographische Detailangaben
Hauptverfasser:	LEE JUNG RYUL, YI SEUNG WOO, EOM JIN SEOB, AHN SANG HO, JEONG KWANG WON
Format:	Patent
Sprache:	eng
Schlagworte:	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 SELECTING TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSMISSION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To apply a feedback algorithm in a way that pulse trains constituting compressed signals are reinputted with a time difference and sequentially reversely compressed through their circulation. SOLUTION: The loop mirror 35 is provided therein with a phase changing means 40 comprising a SOA(semiconductor optical amplifier) having a specified gain, and a polarization controller 42, at the interior thereof, thus the loop mirror 35 is operated as a high-speed switch capable of selecting an optional pulse out of those of the compressed signals. A circulator 22 and an amplifier 23 are used for feedback and amplification of the pulse trains of signals which are not reversely compressed. Thus, the pulse trains of the compressed signals which inputted from an input end are passed through the SOA of the loop mirror 35 bit by bit and interfered with the output port of the loop mirror 35 so as to generate a phase change, and so that the pulse trains are reversely compressed and outputted from an output end.