Double-cover-plate optical fiber array and manufacturing method thereof

Abstract

The invention discloses a double-cover-plate optical fiber array and a manufacturing method thereof. The double-cover-plate optical fiber array comprises a glass V-shaped groove, a first optical fiberis placed in an inner cavity of the V-shaped groove of the glass V-shaped groove, and a second optical fiber is welded to the right end of the first optical fiber. Through cooperative use of the glass V-shaped groove, the first optical fiber, the second optical fiber, the optical fiber fusion point, the front cover plate and the rear cover plate with the groove, the optical fiber welding point can be prevented from being easily extruded and broken in the V-shaped groove; product reliability is higher. The optical fiber welding point and the second optical fiber are separately bonded and protected, the advantages are realized in the aspect of size miniaturization. The fiber array is suitable for various welding type optical fiber arrays, such as from a common single-mode optical fiber to asmall-mode-field optical fiber, from a polarization maintaining optical fiber to a common single-mode optical fiber, from a single-mode optical fiber to a multimode optical fiber and the like, and only needs to add a rear cover plate on the basis of the existing mature manufacturing process of a common single-cover-plate optical fiber array, so that the overall manufacturing cost is increased slightly.

Description

technical field [0001] The invention relates to the technical field of optical fiber arrays, in particular to an optical fiber array with double covers and a manufacturing method thereof. Background technique [0002] Optical fiber array is a kind of optical fiber device in which multiple optical fibers are precisely arranged in parallel. It is usually composed of glass V-groove, glass cover, optical fiber and fixing glue. With the development of silicon photonic integration technology and optical fiber sensing, The optical fiber in the optical fiber array sometimes needs to be fused to another section of optical fiber for transition, such as from ordinary single-mode optical fiber to small-mode field optical fiber, polarization-maintaining optical fiber to ordinary single-mode optical fiber, single-mode optical fiber to multi-mode optical fiber, etc. For this type of fusion splicing optical fiber The protection of the fusion splicing point of the array is a big problem. On ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a double-cover optical fiber array and its manufacturing method, which has the advantages of simultaneously protecting the optical fiber fusion point and strengthening and fixing the optical fiber, and solves the difficulty in protecting the optical fiber fusion point and fixing the optical fiber in the conventional single-cover optical fiber array. concurrent issues

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