Efficiently Coupling Light to Superconducting Nanowire Single-Photon Detectors
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Hu_Efficiently-Coupling-Light.pdf
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Author(s)
Hu, Xiaolong
Holzwarth, Charles W.
Masciarelli, Daniele
Dauler, Eric A.
Berggren, Karl K.
Date Issued
July 2009
Journal
IEEE Transactions on Applied Superconductivity
Publisher
Institute of Electrical and Electronics Engineers
Citation
Xiaolong Hu et al. “Efficiently Coupling Light to Superconducting Nanowire Single-Photon Detectors.” Applied Superconductivity, IEEE Transactions on 19.3 (2009): 336-340. © 2009 Institute of Electrical and Electronics Engineers
Version
Final published version
Abstract
We designed superconducting nanowire single-photon detectors (SNSPDs) integrated with silver optical antennae for free-space coupling and a dielectric waveguide for fiber coupling. According to our finite-element simulation, (1) for the free-space coupling, the absorptance of the NbN nanowire for TM-polarized photons at the wavelength of 1550 nm can be as high as 96% by adding silver optical antennae; (2) for the fiber coupling, the absorptance of the NbN nanowire for TE-like-polarized photons can reach 76% including coupling efficiency at the wavelength of 1550 nm by adding a silicon nitride waveguide and an inverse-taper coupler.
Subjects
single-photon detectors
plasmons
optical waveguides
niobium nitride
MIT Department
Lincoln Laboratory
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1109/tasc.2009.2018035
