A special-purpose clamp set for a fiber grating

Abstract

The invention discloses a special-purpose clamp set for a fiber grating. The clamp set comprises four optical fiber clamps; lower cover plates of two first clamps at both ends are provided with V-shaped grooves for placing an optical fiber; the upper and lower cover plates are attached to each other in a magnetically strengthened mode to control the stability of the optical fiber in the direction parallel to the optical fiber during the grating writing. Upper and lower cover plates of the two second clamps positioned in the middle position are respectively provided with V-shaped grooves for placing of the optical fiber; and the upper and lower cover plates are attached to each other in a magnetically strengthened mode to control the stability of the optical fiber in the direction perpendicular to a phase mask surface. Consequently, through utilization of the two middle second clamps, the optical fiber is controlled not to jitter back and forth relative to a phase mask plate, and through utilization of the two first clamps on the left and right, the optical fiber is controlled not to move leftwards and rightwards so as to raise the clamping stability of the optical fiber in the grating writing process; influences by UV high energy light pressure on the high power fiber grating in a production process are reduced; and the yield rate of the fiber grating is raised.

Description

technical field [0001] The present application relates to the field of optical fiber grating manufacturing, in particular to a special fixture set for optical fiber gratings. Background technique [0002] A general fiber grating fixture set consists of two left and right fixtures. The upper cover of the fixture is embedded with a rectangular rubber block in the horizontal direction, and the lower cover has a V-shaped groove in the horizontal direction that can place optical fibers. [0003] In the process of making high-power fiber gratings, due to the high energy of ultraviolet light pulses, the optical pressure on the optical fiber is large, and the optical fiber is affected by the light pressure caused by the ultraviolet high-energy exposure during the grating writing process, resulting in the fiber grating writing process. The relative phase mask will jitter back and forth, which can easily cause the index of reflectivity of the fiber grating to fail to be achieved, whic...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a special fixture group for fiber gratings, to solve the problem that the current fiber grating fixture group will cause the optical fiber to vibrate back and forth relative to the phase mask during the grating writing process, which will easily cause the index of the reflectivity of the fiber grating to fail to be achieved. Technical Issues Affecting the Yield of Fiber Bragg Gratings

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