Coherent perfect absorption and reflection in slow-light waveguides

Date

2013-12-01

Authors

Gutman, Nadav
Sukhorukov, Andrey
Chong, Y. D.
de Sterke, C. Martijn

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Volume Title

Publisher

Optical Society of America

Abstract

We identify a family of unusual slow-light modes occurring in lossy multimode grating waveguides, for which either the forward or backward mode components, or both, are degenerate. In the fully degenerate case, the response can be modulated between coherent perfect absorption (zero reflection) and perfect reflection by varying the wave amplitudes in a uniform input waveguide. The perfectly absorbed wave has anomalously short absorption length, scaling as the inverse one-third power of the absorptivity.

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Citation

Source

Optics letters

Type

Journal article

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DOI

10.1364/OL.38.004970

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