SEMICONDUCTOR OPTICAL PHASE MODULATOR, HYBRID MODULATOR, AND SSB MODULATOR

To make it possible to reduce optical loss even when light to be modulated has a high power.SOLUTION: A semiconductor optical phase modulator 10 converts single-mode light into multi-mode light, and has a first area A1 where a mirror image is formed due to interference of light and a second area A2...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAO JURI, ODA TOSHIHIRO, INOUE DAISUKE, ICHIKAWA TADASHI, KAMATA HIROKI, YAMASHITA TATSUYA
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 make it possible to reduce optical loss even when light to be modulated has a high power.SOLUTION: A semiconductor optical phase modulator 10 converts single-mode light into multi-mode light, and has a first area A1 where a mirror image is formed due to interference of light and a second area A2 where the power density of the light is lower than that in the first area A1. The semiconductor optical phase modulator comprises a multi-mode waveguide 12 for propagating the interfered light, and a pair of channels 14 and 15 provided to face each other so as to sandwich the propagated light with the second area A2 and each having a higher doping concentration than a doping concentration at a peripheral area.SELECTED DRAWING: Figure 1 【課題】変調する光が高出力であっても光学損失を低減できる。【解決手段】半導体光位相変調器１０は、シングルモードの光をマルチモードの光に変換し、光の干渉により鏡像が形成される第１の箇所Ａ１、及び、前記第１の箇所Ａ１より光のパワー密度が低い第２の箇所Ａ２を有し、干渉させた光を伝播するマルチモード導波路１２と、伝播する光を前記第２の箇所Ａ２で挟むように対向して設けられ、それぞれが周囲の領域のドーピング濃度より高いドーピング濃度を有する一対のチャネル１４，１５と、を備える。【選択図】図１