Device for bending optical fiber and receiving light

Abstract

A device for bending an optical fiber and receiving light is provided with a recessed holding member having a recess, a projecting holding member having a projection projecting toward the recess, light receiving elements for receiving leak light from the optical fiber held between the recess and the projection, and a supplemental support mechanism substantially independent of the recess or the projection and supplementarily supporting the optical fiber between the recess and the projection so that the leak light from the optical fiber is received by the centers of the light receiving elements.

Description

technical field [0001] The present invention relates to an optical fiber bending photoreceiver used as an optical fiber core wire comparator, a live wire detector, and the like. The optical fiber bending receiver is used in optical fiber projects such as laying, maintenance and dismantling of optical fibers. In particular, it relates to an optical fiber bending photoreceiver for non-destructively performing a core wire comparison inspection of an optical fiber, such as an optical fiber core wire, an optical fiber fiber wire, and an optical fiber cord, and live wire discrimination. [0002] this application claims priority based on Japanese Patent Application No. 2008-293641 for which it applied to Japan on November 17, 2008, and uses the content here. Background technique [0003] Such an optical fiber bending receiver includes a mechanism (fiber gripping and bending imparting mechanism) for gripping and bending an optical fiber such as an optical fiber core, an optical fib...

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Problems solved by technology

Therefore, when the narrow-diameter optical fiber 142 is held between the concave surface 111 of the concave holding member 110 and the convex surface 121 of the convex holding member 120, as Figure 20 As shown, the optical fiber bending optical receiver 101 cannot be in the width direction of the convex surface 121 ( Figure 20 up and down on the paper) to fix the position of the thin-diameter optical fiber 142

As a result, there is the following unfavorable situation: the optical fiber 142 may be greatly displaced from the light receiving surface 131 of the light receiving element 130, and only a part of the leaked light is coupled, and the measurement of the leaked light may deviate.

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