학술논문
Simulation of superconducting nanowire single photon detector with phase grating structure
Document Type
Conference
Author
Source
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on. :1-2 Sep, 2014
Subject
Language
ISSN
2162-2027
2162-2035
2162-2035
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 SiO 2 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.