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High-isolation demultiplexing in bend-tuned twin-core fiber

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4 Author(s)
Arkwright, J.W. ; Siemens (Australia) Ltd., Vic., Australia ; Hewlett, S.J. ; Atkins, G.R. ; Bin Wu

By applying a cantilever bend to a twin-core optical fiber wavelength division demultiplexer, isolations of >30 dB have been achieved between channels at 1.33-1.54 μm. These bend-tuned TCF's exhibit ⩾20 dB isolation over a bandwidth of 32 and 21 nm in the two wavelength windows, respectively. This is significantly better than that typically offered by commercially available, single-stage, tapered coupler demultiplexers. The bend-tuning mechanism is demonstrated experimentally and described theoretically using a coupled local-mode analysis

Published in:

Lightwave Technology, Journal of  (Volume:14 ,  Issue: 7 )

Date of Publication:

Jul 1996

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