Abstract
We demonstrate the excitation of all of the higher-order modes in a few-mode fiber using mode-selective couplers made by taper-polish method. Each mode selective coupler provides exclusive mode coupling between the LP01 mode of a single-mode fiber and each of the LP11, the LP21, and the LP02 modes of a few-mode fiber, respectively. We also demonstrate the C-band optimized mode division multiplexer using cascaded mode selective couplers.
© 2014 Optical Society of America
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