JPS6063822U

JPS6063822U - light modulator

Info

Publication number: JPS6063822U
Application number: JP15451483U
Authority: JP
Inventors: 明久橋本
Original assignee: 横河電機株式会社
Priority date: 1983-10-05
Filing date: 1983-10-05
Publication date: 1985-05-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は分岐干渉形光導波路体の一例を示す構成説明図
、第２図は本考案の一実施例を示す構成説明図、第３図
は第２図のように構成された装置を含む回路側図、第４
図は第３図の各部の波形側図である。１０・・・・・・基板、２０・・・・・・光導波路、３
０・・・・・・電極、４０・・・・・・信号源、５０，
６０．８０・・・・・・光ファイバー、７０・・・・・
・プリズム、９０，１００・・・・・・ホルダー、１１
０，１２０・・・・・・受光素子、１３０．１４０・・
・・・・増幅器、１７０・・・・・・演算増幅器、１５
０・・・・・・加算ｍ、ｔｓｏ・・・・・・フィルタ、
１８０・・・−・・基準信号源、１９０・・・・・・光
源。FIG. 1 is a configuration explanatory diagram showing an example of a branching interference type optical waveguide body, FIG. 2 is a configuration explanatory diagram showing an embodiment of the present invention, and FIG. 3 includes a device configured as shown in FIG. 2. Circuit side diagram, 4th
The figure is a waveform side view of each part of FIG. 3. 10... Substrate, 20... Optical waveguide, 3
0... Electrode, 40... Signal source, 50,
60.80...Optical fiber, 70...
・Prism, 90,100...Holder, 11
0,120... Light receiving element, 130.140...
... Amplifier, 170 ... Operational amplifier, 15
0...addition m, tso...filter,
180...--Reference signal source, 190... Light source.

Claims

[Scope of utility model registration request]

a branching interference type optical waveguide body having a leading waveguide and an electrode for applying an electric field to the light passing through the leading waveguide to modulate the intensity; a light source that adds light to an input portion of the optical waveguide of the branching interference type optical waveguide body; A first light extraction means for extracting leaked light from the optical waveguide of the branching interference type optical waveguide body, a second light extraction means for extracting the output light whose intensity has been modulated by the branching interference type optical waveguide body, and these light extraction means 1. A light modulation device comprising means for controlling the intensity of light output from the light source by returning a signal corresponding to the intensity of light extracted by the light source to the light source.