Optimization of compact lateral, vertical, and combined tapered spot-size converters by use of the beam-propagation method.

Abstract

A study of lateral, vertical, and combined spot-size converters is presented that employs full-vectorial numerical techniques such as modal solution and beam propagation based on the finite-element method. Spot-size expansion, coupling efficiency to an optical fiber, the mode-beating phenomenon, and transmission losses are demonstrated for all three spot… (More)

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