Optical fiber built-in type composite insulator

Details Optical fiber built-in type composite insulator Optical fiber built-in type composite insulator

H - Electricity

01

B

337/134

H01B 17/60 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2039037

An excellent optical fiber built-in type compo- site insulator of reduced damage rate in the producing operation and the handling operation thereof, reduced loss of light signal transmission property at initial time and in a desired temperature range, and reduced trouble rate after thermal shock test, is provided. The optical fiber built-in type composite insulator of the present invention having a penetration hole in the central axis portion of the insulator, an optical fiber extending in the penetration hole, and an inorganic glass arranged at the both end portions of the penetra- tion hole for sealing the optical fiber therein, comprises protective tubes each having a bore of an inner diameter of substantially equal to the outer diameter of coating portion of the optical fiber to allow insertion of the coating portion of the optical fiber therethrough each arranged in the penetration hole at such a position that a portion of the coating portion of the optical fiber and a portion of the coating-stripped portion of the optical fiber exist in each bore of the protective tube to protect the portions of the coating portion and the coating-stripped portion of the optical fiber in the both end portions of the penetration hole.

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