JPS5871714U

JPS5871714U - optical coupler

Info

Publication number: JPS5871714U
Application number: JP16666181U
Authority: JP
Inventors: 松井　輝仁
Original assignee: 三菱電機株式会社
Priority date: 1981-11-09
Filing date: 1981-11-09
Publication date: 1983-05-16

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を持った半導体レーザと光ファ
イバの結合器を示す原理図、第２図はこの考案の一実施
例による光アイソレータを示す断面図、第３図は第２図
の光アイソレータを使った半導体レーザと光ファイバと
の結合を行う光結合器を示す分解斜視図、第４図はこの
考案の他の実施例による光アイソレータを示す斜視略図
である。図中、１０は光アイソレータ、１１は偏光子、１２はフ
ァラデー効果素子、１３は検光子、１４はリング状マグ
ネット、１５．１５Ａ、１６は円柱状支持体、１８は溝
、１９は４分の１波長板、２０はケース、２１は半導体
レーザ、２２は屈折率分布型レンズ、２３は円形嵌合孔
、３０は枠体、３１はレセプタクル、３２は枠上面であ
る。なお、図中の同一符号は同一または相当部分を示す
。Fig. 1 is a principle diagram showing a semiconductor laser and optical fiber coupler with an optical isolator, Fig. 2 is a sectional view showing an optical isolator according to an embodiment of this invention, and Fig. 3 is the optical isolator of Fig. 2. FIG. 4 is an exploded perspective view showing an optical coupler for coupling a semiconductor laser and an optical fiber using the present invention, and FIG. 4 is a schematic perspective view showing an optical isolator according to another embodiment of this invention. In the figure, 10 is an optical isolator, 11 is a polarizer, 12 is a Faraday effect element, 13 is an analyzer, 14 is a ring-shaped magnet, 15.15A, 16 is a cylindrical support, 18 is a groove, and 19 is a quarter 1 wavelength plate, 20 is a case, 21 is a semiconductor laser, 22 is a gradient index lens, 23 is a circular fitting hole, 30 is a frame, 31 is a receptacle, and 32 is an upper surface of the frame. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A circular fitting hole is provided in the front surface of the case in which the semiconductor laser is mounted, and the cylindrical support of a pre-integrated optical isolator having a cylindrical support on the incident side is inserted into the circular fitting hole with the optical axis centered. An optical coupler, characterized in that the output side of the optical isolator is provided with a receptacle for connecting an optical fiber connector that can be rotatably and fixedly inserted into the optical isolator and adjusted according to the polarization plane of the output light from the semiconductor laser.