Optical fiber built-in type composite insulator

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

1991-03-19

1992-08-11

Lee, John D.

Optical waveguides

Accessories

Bushing structure

174139, 174151, 385100, 385134, 385147, G02B 636

Patent

active

051386925

ABSTRACT:
An excellent optical fiber built-in type composite insulator of reduced damage rate in the producing operation and the handling operation thereof, reduced loss of initial light signal transmission 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 both end portions of the penetration 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 a 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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patent: 4984860 (1991-01-01), Seike et al.
patent: 5029969 (1991-07-01), Seike et al.
patent: 5069525 (1991-12-01), Seike et al.

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