Simulation of superconducting nanowire single photon detector with phase grating structure

Author

Gu, Ming ; Zhang, L.B. ; Kang, L. ; Tu, X.C. ; Zhao, Q.Y. ; Jia, T. ; Xu, R.Y. ; Wu, P.H.

Author_Institution

Sch. of Electron. Sci. & Eng., Nanjing Univ., Nanjing, China

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

Phase grating structure has the ability to converge light. We have introduced it to couple with superconducting nanowire single photon detector (SNSPD) to enhance its response for light. The effects of the coupling structure parameters on the enhancement have been studied systematically by FDTD method. Our numerical simulation show that the optical density arriving on nanowires of SNSPDs can be enhanced greatly by using SiO₂ phasing grating structure, which can extremely improve the system detector efficiency of SNSPDs. It can improve the efficiency over 45% at wavelength of 404 nm.

Keywords

diffraction gratings; finite difference time-domain analysis; nanosensors; nanowires; optical sensors; silicon compounds; superconducting devices; FDTD method; SNSPD; SiO₂; coupling structure parameter; light response enhancement; numerical simulation; optical density; phase grating structure; superconducting nanowire single photon detector simulation; wavelength 404 nm; Absorption; Detectors; Gratings; Inductance; Kinetic theory; Optical polarization; Photonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956528

Filename

6956528