Thin fiber and manufacture method thereof

Abstract

The invention discloses a thin fiber and a manufacture method of the thin fiber. The thin fiber comprises a diamond fiber core which comprises a strengthened fiber. A silica covering layer is arranged on the outer surface of the diamond fiber core. A coating layer is arranged on the outer surface of the silica covering layer. The diamond fiber core is a concrete or hollow fiber which is made of diamond. The manufacture method of the thin fiber includes the following steps. A fiber segment is arranged in a sealed container, pure methane gas and hydrogen are introduced into the sealed container. A radio frequency device or a microwave device is used for heating the gas in the sealed container so that an ionic state appears in the sealed container and lasts for at least five minutes until a diamond film or a diamond-like film is deposited on the surface of the fiber. A silica film is plated on the diamond film or the diamond-like film so as to obtain the thin fiber. The thin fiber has the advantages of being even in outer diameter, high in strength, simple in manufacture method, low in cost and good in application prospect.

Description

technical field [0001] The invention relates to a thin-diameter optical fiber and a manufacturing method thereof. Background technique [0002] There are two main processing methods for existing thin-diameter optical fibers, both of which are based on existing ordinary optical fibers. One is to reheat and stretch existing ordinary silica optical fibers to form thin-diameter optical fibers; The existing silica optical fiber is corroded with acid, such as hydrofluoric acid is used to corrode the cladding of the optical fiber to form a thin-diameter optical fiber. The thin-diameter optical fiber produced by the two methods all has the problem of uneven outer diameter, which limits its use. Contents of the invention [0003] The object of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a narrow-diameter optical fiber and a manufacturing method thereof. The thin-diameter optical fiber not only has a uniform outer diameter an...

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Problems solved by technology

[0002] There are two main processing methods for existing thin-diameter optical fibers, both of which are based on existing ordinary optical fibers. One is to reheat and stretch existing ordinary silica optical fibers to form thin-diameter optical fibers; The existing silica optical fiber is corroded with acid, such as hydrofluoric acid is used to corrode the cladding of the optical fiber to form a thin-diameter optical fiber. The thin-diameter optical fiber produced by the two methods all has the problem of uneven outer diameter, which limits its use

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