1X2 plastic fibre-optical coupler and its preparation method

Abstract

This invention relates to a 1X2 plastic fiber coupler and its manufacturing method. It includes a main plastic fiber and two branch plastic fibers, and the two branches are in involution with their slipper bevels heat cut, and make the two branch fiber form 'V'shape, insert a metal film between the involutory faces of the bevels; the points of the 'V'shape are the vertical circle end face formed by heat cut, the diameter of the end face is as same as that of the main plastic fiber, and conglutinate the slipper vertical end face of the main plastic fiber and form the 'Y' structure; a base and a cover board are in involution, and on the base and the cover board are the 'Y' grooves, and matching seal the 'Y'structure formed by conglutination of the main and the branch plastic fiber. The manufacturing method adopts the heat cutting method, the processes are: select the main and the branch plastic fiber using the same materials, use cut knife to carry out vertical cut and decline cut of the main and the branch fibers, use the glue whose refraction ratio matches with the main plastic fiber to conglutinate the main and the branch fibers and form the 'Y'structure and seal with epoxy resin. This fiber couple has simple structure, low manufacturing cost and small crosstalk, and is suitable for the wave splitter and connector in the fiber network.

Description

Technical field: [0001] The invention relates to an optical fiber coupler and a preparation method thereof, in particular to a 1×2 plastic optical fiber coupler suitable for use as a wave splitter or a wave combiner in a plastic optical fiber network and a preparation method thereof. technical background: [0002] In recent years, plastic optical fiber as the transmission medium of broadband local area network has become a research hotspot at home and abroad. Plastic optical fiber is expected to compete with cables and quartz optical fibers with significant performance-price ratio advantages, thus becoming a main transmission medium of high-speed local area network. Since the installation cost occupies a considerable proportion in the total cost of the local area network, plastic optical fiber needs a large number of high-performance and low-cost optical fiber connectors and couplers to achieve significant performance-price ratio advantages in connection-intensive local area ...

AI Technical Summary

Problems solved by technology

At present, the preparation methods of 1×2 plastic optical fiber coupler mainly include grinding method, end face connection method, waveguide method, etc. The preparation process is relatively complicated, and the crosstalk of the prepared coupler is relatively large, which cannot meet the requirements in communication and sensing. application

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