| 摘要 |
In an optical transmission system in which light being transmitted from a light-emitting device to a detector device is caused to travel along at least one path built up of at least two optical fibers connected end-to-end, the optical fibre of the interconnected fibres that is nearer the light-emitting device being of smaller cross-sectional area than the other optical fibre, the optical fibres are detachably connected end-to-end by means of a connector comprising two separately formed bodies. One body of the connector has a bore in which one of said two optical fibres is housed and from which a length of said optical fibre protrudes and the other body of the connector has a through-bore which is stepped between its ends and in one part of which the other of said two optical fibres is housed. The two bodies of the connector are connected together with the length of the fibre protruding from said one part of the connector fitting in the vacant part of the stepped through-bore of the other body of the connector in such a way that the end faces are in contact or close proximity to one another and that the end face of the fibre having the larger cross-sectional area overlies at least a major portion, and preferably substantially the whole, of the end face of the other fibre.
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