Optical fiber built-in type composite insulator and method of pr

Details Optical fiber built-in type composite insulator and method of pr Optical fiber built-in type composite insulator and method of pr

1991-03-13

1992-06-30

Lee, John D.

Optical waveguides

Accessories

Bushing structure

174139, 174151, 385134, 385147, G02B 636

Patent

active

051270838

ABSTRACT:
An excellent optical fiber built-in type composite insulator is provided having a reliable and durable sealing portion in a central axis penetration hole of the insulator for sealing the optical fiber in a very quick, simple and economical way with reduced members, devices and production steps. The composite insulator includes a ceramic insulator having a penetration hole in its central axis portion, at least one optical fiber inserted in the penetration hole, and sealing portions made of inorganic glass arranged at both ends of the penetration hole for sealing the optical fiber therein, and comprises recessed portions of the ceramic insulator arranged around the ends of the penetration hole, and heat generating elements arranged in the recessed portions for heating and melting the inorganic glass to form the sealing portions at the both ends of the penetration hole. The present invention provides also a method of producing the composite insulator.

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patent: 5029969 (1991-07-01), Seike et al.

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