JPS5893913U

JPS5893913U - optical isolator

Info

Publication number: JPS5893913U
Application number: JP18870881U
Authority: JP
Inventors: 義人小野田; 秀夫桑原; 勝佐々木; 後藤　正見
Original assignee: 富士通株式会社
Priority date: 1981-12-18
Filing date: 1981-12-18
Publication date: 1983-06-25

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 the drawing]

第１図は光アイソレータの使用構成を略図で示し、第２
図は本考案の対象であるファラデー回転子の側面略図を
、第３図はその実用的構成の従来の一例を斜視図イと正
面図口で、第４図、第５図は本考案の２個の実施例を夫
々斜視図イと正面図口で示す。図において１は半導体レーザ、４は光ファイバー、７，
１１は偏光子、８はファラデー回転子、９は付加される
磁界、１０は％波長板、１４はヨーク、１５．１５’は
永久磁石、１６．１６’は台状ブロック、１７．１７’
は矩形孔、１８゜１８′は可調整磁性体、１９は雄ねじ
穴、２ｏは磁性体からなる雌ねじを示す。FIG. 1 schematically shows the configuration in which the optical isolator is used, and the second
The figure shows a schematic side view of the Faraday rotator that is the object of the present invention, Figure 3 shows a perspective view and a front view of a conventional example of its practical configuration, and Figures 4 and 5 show a conventional example of the Faraday rotator of the present invention. Each embodiment is shown in a perspective view and a front view, respectively. In the figure, 1 is a semiconductor laser, 4 is an optical fiber, 7,
11 is a polarizer, 8 is a Faraday rotator, 9 is an applied magnetic field, 10 is a % wave plate, 14 is a yoke, 15.15' is a permanent magnet, 16.16' is a trapezoidal block, 17.17'
is a rectangular hole, 18° 18' is an adjustable magnetic material, 19 is a male screw hole, and 2o is a female screw made of magnetic material.

Claims

[Scope of utility model registration request]

1 on a part of the periphery of the Faraday rotor fixed between permanent magnets placed above and below the center of the yoke that forms a closed magnetic path.
An optical isolator characterized in that one or more magnetic bodies are arranged in an adjustable manner.