| 摘要 |
An optical fiber connector or coupler (24-54) is provided which partially reflects light travelling in one direction (56) but preferably transmits light without reflection in the opposite direction (58). When such connectors (Co to Cn) are alternated with ambient environment sensors (Sl to Sn) in an optical fiber transmission path, light pulses launched in the one direction from a source (60) produce reflected light at a detector (62) which reflected light can be correlated to a preselected characteristic of the environment at each sensor. A series of such connectors can be used without sensors to provide reference signals from points along an optical fiber transmission path. A single fiber path can be used, without the need for a separate fiber for feedback.
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