JPH01133106U

JPH01133106U -

Info

Publication number: JPH01133106U
Application number: JP2788188U
Authority: JP
Priority date: 1988-03-02
Filing date: 1988-03-02
Publication date: 1989-09-11

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す正面図、第２
図〜第５図は他の実施例を示す図、第６図は光カ
プラ本体の一例を示す斜視図、第７図は光カプラ
本体の概略製作工程を示す斜視図、第８図は従来
の結合比可変型光カプラを示す正面図、第９図は
コアの位置と結合比の関係を示す図、第１０図は
圧電アクチユエータへの印加電圧と変位量の関係
を示す図、第１１図は圧電アクチユエータへの印
加電圧と結合比の関係を示す図である。１ａ，１ｂ……基板、５……支持部材、９……
弾性体、１１……圧電アクチユエータ。 Figure 1 is a front view showing one embodiment of the present invention;
5 to 5 are views showing other embodiments, FIG. 6 is a perspective view showing an example of the optical coupler main body, FIG. 7 is a perspective view showing a schematic manufacturing process of the optical coupler main body, and FIG. 8 is a conventional 9 is a diagram showing the relationship between the core position and the coupling ratio, FIG. 10 is a diagram showing the relationship between the voltage applied to the piezoelectric actuator and the amount of displacement, and FIG. 11 is a front view showing the variable coupling ratio optical coupler. FIG. 3 is a diagram showing the relationship between the voltage applied to the piezoelectric actuator and the coupling ratio. 1a, 1b...Substrate, 5...Supporting member, 9...
Elastic body, 11...Piezoelectric actuator.

Claims

[Claims for Utility Model Registration] An optical fiber consisting of a cladding and a core portion, and a substrate having a groove for embedding the optical fiber formed with a predetermined radius of curvature r in the depth direction of the substrate surface, the groove having a predetermined radius of curvature r. When the optical fiber is buried/fixed, the depth of the groove is such that the top of the cladding along the curved surface is slightly lower than the surface of the substrate, and the surface on the side where the optical fiber is buried is polished together with the cladding. A few μm where the core is exposed
In the variable coupling ratio optical coupler, the coupling ratio is changed by removing the substrates up to the front side, making two of the substrates into a set, bringing the polished side cruds into contact with each other, and displacing the contact portion. A variable coupling ratio optical coupler characterized in that a piezoelectric actuator is used as a displacement means.