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1. WO2013094216 - 光変調器

公開番号 WO/2013/094216
公開日 27.06.2013
国際出願番号 PCT/JP2012/008189
国際出願日 21.12.2012
IPC
G02F 1/01 2006.01
G物理学
02光学
F光の強度,色,位相,偏光または方向の制御,例.スイッチング,ゲーテイング,変調または復調のための装置または配置の媒体の光学的性質の変化により,光学的作用が変化する装置または配置;そのための技法または手順;周波数変換;非線形光学;光学的論理素子;光学的アナログ/デジタル変換器
1独立の光源から到達する光の強度,色,位相,偏光または方向の制御のための装置または配置,例.スィッチング,ゲーテイングまたは変調;非線形光学
01強度,位相,偏光または色の制御のためのもの
CPC
G02F 1/011
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
011in optical waveguides, not otherwise provided for in this subclass
G02F 1/212
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
21by interference
212Mach-Zehnder type
G02F 1/225
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
21by interference
225in an optical waveguide structure
G02F 1/2255
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
21by interference
225in an optical waveguide structure
2255controlled by a high-frequency electromagnetic component in an electric waveguide structure
G02F 1/2257
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
21by interference
225in an optical waveguide structure
2257the optical waveguides being made of semiconducting material
出願人
  • 日本電信電話株式会社 NIPPON TELEGRAPH AND TELEPHONE CORPORATION [JP]/[JP]
発明者
  • 山崎 裕史 YAMAZAKI, Hiroshi
  • 才田 隆志 SAIDA, Takashi
  • 郷 隆司 GOH, Takashi
代理人
  • 特許業務法人 谷・阿部特許事務所 TANI & ABE, P.C.
優先権情報
2011-28180122.12.2011JP
公開言語 (言語コード) 日本語 (JA)
出願言語 (言語コード) 日本語 (JA)
指定国 (国コード)
発明の名称
(EN) OPTICAL MODULATOR
(FR) MODULATEUR OPTIQUE
(JA) 光変調器
要約
(EN)
The purpose of the present invention is to provide a PS-QPSK optical modulator that has a simple configuration and no theoretical optical loss. In order to achieve this purpose, the optical modulator is characterized by being provided with an input optical branching means for branching input light from a main input port into two branches, a final optical coupling means for coupling two systems of optical signals in a polarization state where the optical signals are orthogonal to each other and outputting the optical signals to a main output port, an intermediate optical coupling means positioned between the input optical branching means and the final optical coupling means and provided with at least two input ports and at least two output ports, first and second optical paths linking the input optical branching means and the intermediate optical coupling means and having optical path lengths substantially equal to each other, third and fourth optical paths linking the intermediate optical coupling means and the final optical coupling means and having optical path lengths substantially equal to each other, and three binary phase modulation means arranged one each in three of the first, second, third, and fourth optical paths.
(FR)
Le but de l'invention est de fournir un modulateur optique PS-PQSK qui possède une structure simple et aucune perte optique théorique. A cette fin, le modulateur optique est caractérisé en ce qu'il comprend un moyen de ramification optique d'entrée afin de ramifier la lumière d'entrée depuis un port d'entrée principal en deux branches, un moyen de couplage optique final afin de coupler deux systèmes de signaux optiques à l'état de polarisation où les signaux optiques sont orthogonaux les uns aux autres et d'émettre les signaux optiques vers un port de sortie principal, un moyen de couplage optique intermédiaire disposé entre le moyen de ramification optique d'entrée et le moyen de couplage optique final et comprenant au moins deux ports d'entrée et deux ports de sortie, des premier et second trajets optiques reliant le moyen de ramification optique d'entrée et le moyen de couplage optique intermédiaire et possédant des longueurs de trajet optique essentiellement identiques, des troisième et quatrième trajets optiques reliant le moyen de couplage optique intermédiaire et le moyen de coulage optique final et possédant des longueurs de trajet optique essentiellement identiques, et trois moyens de modulation de phase binaires disposés chacun dans trois des premier, second et troisième trajets optiques.
(JA)
 本発明の目的は、原理的な光損失を生じず、かつ構成がシンプルなPS-QPSK光変調器を提供することである。上記の課題を解決するために、本発明の光変調器は、メイン入力ポートからの入力光を2分岐する入力光分岐手段と、2系統の光信号を互いに直交する偏波状態で結合させメイン出力ポートへ出力する最終光結合手段と、上記入力光分岐手段と最終光結合手段の中間に位置し、少なくとも2個の入力ポートと少なくとも2個の出力ポートを備える中間光結合手段と、上記入力光分岐手段と上記中間光結合手段を結ぶ互いに光路長がほぼ等しい第1および第2の光路と、上記中間光結合手段と上記最終光結合手段を結ぶ互いに光路長がほぼ等しい第3および第4の光路と、上記第1、第2、第3、及び第4の光路のうち3本の光路中に1個ずつ配置された3個の2値位相変調手段を備えることを特徴とする。
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