Tapered velocity mode-selective couplers
Date
2013
Authors
Riesen, N.
Love, J.D.
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Journal article
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Journal of Lightwave Technology, 2013; 31(13):2163-2169
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Nicolas Riesen and John D.Love
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Abstract
In this paper tapered velocity mode-selective couplers are presented. These tapered couplers are approximately adiabatic devices which unlike standard mode-selective couplers, do not rely on precise phase conditions to be satisfied over an extended length, to achieve their mode-selective functionality. Therefore these mode couplers permit ultra-wideband mode-division multiplexing of few-mode waveguides. Moreover, their behavior is largely independent of parameters such as index contrast and the precise coupler dimensions. The mode-selective functionality is demonstrated in slab geometry, with the principles generalizing to planar or fiber-based devices.
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© 2013 IEEE