Optoelectronic coupler for optical fibers providing adjustable light-energy extraction and a bidirectional data transmission system for practical application of the coupler

摘要

A coupler comprising a photodiode having a central passage and fitted on the end portion of a first optical fiber which is rigidly fixed to a casing, a second optical fiber being rigidly fixed to a sleeve slidably fitted within the casing and having an end-face located at an adjustable distance from an end-face of the first optical fiber and from the photodiode in order to adjust the light-energy extraction rate to a predetermined value, and comprising means for adjusting the spacing between fibers.