Method and leadthrough system for laying out optical fibres acro

Details Method and leadthrough system for laying out optical fibres acro Method and leadthrough system for laying out optical fibres acro

1989-02-17

1989-11-28

Sikes, William L.

350 9622, G02B 636, G02B 726

Patent

active

048833363

ABSTRACT:
There is disclosed a method and a system for laying out optical fibres across an aperture in a wall separating a high pressure zone from a low pressure zone. It involves a plug member sealingly mounted across the aperture and formed with an axial through fibre passage having a conical first portion and a second portion of constant cross-section. A conical wedge member is freely inserted into the first passage portion and is formed with a series of grooves on its outer surface leading into the second passage portion. A plurality of optical fibres are divided into fractions and each fraction is received into one of the grooves; all fibres being thereafter collected into the second passage portion. Plastics material is introduced in the grooves and in the second passage portion to completely embed the fibres while adhering to the walls of the grooves and of the second passage portion. In this manner, the frictional resistance of the plastics material is greatly increased, allowing an appreciably larger pressure differential between the two pressure zones.

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"Optical Window Based on Light Guides for a Pressure Chamber", A. M. Shirokov et al., High-Pressure Physics Institute, Academy of Sciences of the U.S.S.R., Dec. 1982.

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