Wu, P.-H.; Wu, H.-Y.; Paganis, S. Multispectral SNSPD Using a Modified Distributed Bragg Reflector, Gold Mirror, and Multilayer-Nanowire Structures. Photonics2023, 10, 1142.
Wu, P.-H.; Wu, H.-Y.; Paganis, S. Multispectral SNSPD Using a Modified Distributed Bragg Reflector, Gold Mirror, and Multilayer-Nanowire Structures. Photonics 2023, 10, 1142.
Wu, P.-H.; Wu, H.-Y.; Paganis, S. Multispectral SNSPD Using a Modified Distributed Bragg Reflector, Gold Mirror, and Multilayer-Nanowire Structures. Photonics2023, 10, 1142.
Wu, P.-H.; Wu, H.-Y.; Paganis, S. Multispectral SNSPD Using a Modified Distributed Bragg Reflector, Gold Mirror, and Multilayer-Nanowire Structures. Photonics 2023, 10, 1142.
Abstract
A multispectral superconducting nanowire single photon detector sensitive to different incident photon wavelength bands, is proposed. The SNSPD consists of a Distributed Bragg Reflector, a gold mirror, and two regions employing four NbN nanowires. Using the DBR both as a filter and a reflector, two distinct detection bands are created. The first detection band has a peak absorbance of > 0.75 at a wavelength of 1143 nm, while the second band has an absorbance of > 0.70 in the wavelength range 1440 to 2000 nm. The design of the device can be tuned to provide sensitivity in different wavelength bands. While SNSPDs do not typically provide photon wavelength sensitivity, the band-selection design proposed in this work opens up potential applications for future quantum communication technology.
Keywords
SNSPD; multispectral; dual-spectral; single photon; quantum communication
Subject
Physical Sciences, Optics and Photonics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
