Abstract
Mechanical switches, passive optical taps, and couplers for fiber-optic communications systems can all be fabricated with excess loss below 1 dB, which makes them useful in simple multimode systems. Conventional assembly techniques are used at present for the construction of these components. However, most of the devices demonstrated up to now are extremely labor-intensive in their fabrication, making them also very expensive. In this respect, the multimode devices are inferior to equivalent single-mode structures, which are often made using batch-processable thin-film techniques. We have previously reported a novel batch-processable multimode thin-film fabrication technology, which circumvents many of the difficulties mentioned.1
© 1981 Optical Society of America
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