Selective excitation of fibre-modes using surface plasmons

Abstract

Experimental and theoretical results are presented on a surface plasmon fiber device that provides selective excitation of individual modes in a dual-mode optical fiber. Using prism coupling to probe this device, good modal discrimination was obtained experimentally for the LP₁₁ fiber mode. The LP₁₁ modal discrimination, however, was found to be inherently limited by the field distribution characteristics of the dual-mode fiber. Applications are to fixed and tunable mode tap or couplers.

IEEE Photonics Technology Letters (1995) Vol.7(9) pp.1051-1053

doi: 10.1109/68.414700

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