WAVELENGTH CONVERTER, OPTICAL TRANSMISSION SYSTEM USING THE SAME, AND ADJUSTMENT METHOD OF WAVELENGTH CONVERTER

To provide a wavelength converter and an adjustment method thereof capable of improving the conversion efficiency by suppressing the wavelength dependence of PSP (Principal State of Polarization).SOLUTION: The wavelength converter includes: an input port for inputting signal light and excitation lig...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAUCHI TOMOHIRO, KATO SATOYUKI, AKIYAMA YUICHI, NAKAGAWA KOJI
Format:	Patent
Sprache:	eng ; jpn
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 FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	To provide a wavelength converter and an adjustment method thereof capable of improving the conversion efficiency by suppressing the wavelength dependence of PSP (Principal State of Polarization).SOLUTION: The wavelength converter includes: an input port for inputting signal light and excitation light; an optical fiber that causes the signal light and the excitation light to interact with each other by a nonlinear optical effect; a stress application mechanism that applies stress in the direction intersecting the winding direction of the optical fiber; and an output port that outputs converted light with a wavelength different from that of the signal light and the excitation light.SELECTED DRAWING: Figure 4 【課題】ＰＳＰの波長依存性が抑制され、変換効率が改善された波長変換器とその調整手法を提供する。【解決手段】波長変換器は、信号光と励起光を入力する入力ポートと、前記信号光と前記励起光を非線形光学効果により相互作用させる光ファイバと、前記光ファイバの巻き方向と交差する方向に応力を付与する応力付与機構と、前記信号光及び前記励起光の波長と異なる波長の変換光を出力する出力ポートと、を有する。【選択図】図４