Multimode waveguide with enhanced coupling with guided modes

C - Chemistry – Metallurgy – 03 – B

Patent

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26/197, 88/97.5

C03B 37/027 (2006.01) G02B 6/14 (2006.01)

Patent

CA 1086113

Abstract of The Invention In a multimode optical waveguide, coupling is promoted among guided modes while coupling to unguided modes is suppressed. The core includes perturbations having a power spectrum which decreases with increasing mode order and which has a plurality of minima. The length of each perturbation is such that a minimum in the power spectrum of the perturbation occurs at the critical frequency .omega.c and the power spectrum is significantly reduced for higher frequencies.

305714

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