Spin-controlled coupling via plasmonic nanostructure in silicon waveguide

J. Ma; W.Y. Tam; K.W. Cheah; E.Y.B. Pun

doi:10.1364/BGPPM.2018.JTu5A.15

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF)
OSA Technical Digest (online) (Optica Publishing Group, 2018),
paper JTu5A.15
•https://doi.org/10.1364/BGPPM.2018.JTu5A.15

Spin-controlled coupling via plasmonic nanostructure in silicon waveguide

J. Ma, W.Y. Tam, K.W. Cheah, and E.Y.B. Pun

Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials 2018

Zurich Switzerland
2–5 July 2018
ISBN: 978-1-943580-43-9

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Joint Poster Session II (JTu5A)

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J. Ma, W. Y. Tam, K. W. Cheah, and E. Y. B. Pun, "Spin-controlled coupling via plasmonic nanostructure in silicon waveguide," in Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), OSA Technical Digest (online) (Optica Publishing Group, 2018), paper JTu5A.15.

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Abstract

We propose a nanocoupler design which is based on spin-controlled unidirectional coupling to excite unidirectional guided modes in silicon waveguide, and the coupling directions are determined by the circular polarization states of the incident light. Simulation results indicate that the nanocoupler can have a high unidirectional coupling ratio of 12dB and a broad bandwidth of ~ 150nm, and have applications in optical communication and optical signal processing.

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