Measurement technique and equipment for evaluating transmission characteristics of single-mode fiber have been developed. Two kinds of optical time domain reflectometers were constructed using a 1. 32 mu m Nd**3** plus :YAG laser and a high power LD module, where an acoustooptical light deflector and a polarization splitter are used as directional couplers. As a result, fault location and loss measurement lengths longer than 20 km were attained.
|Number of pages||9|
|Journal||Reports of the Electrical Communication Laboratory|
|Publication status||Published - 1983 Jan 1|
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