Abstract
The design of a coupling between a semiconductor laser and a single-mode fiber, or between any two optical or acoustical elements that support Gaussian modes, is presented as a trade-off among coupling efficiency Ta, offset misalignment tolerance de, and angular misalignment tolerance θe. We show that these three parameters are subject to a trade-off limitation which takes the form
, and we show how to design a coupling so that the upper bound on the alignment product
is achieved.
© 1984 Optical Society of America
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