Improvement on package and fiber coupling of superconducting nanowire single photon detectors

摘要：

　　The optical fiber coupling efficiency is one of the key factors in superconducting nanowire single photon detection (SNSPD) technology.The distance (gap) between SNSPD device and the optical fiber changes due to the thermal contraction during cooling down.In two different packaging methods,we can adjust the gap to a proper value.The gap value can be exactly calculated by measuring the dependence of the reflected light power on the wavelength of the input light.Based on the analysis of the package structure,we calculated the change of the gap caused by the temperature difference theoretically,which agrees well with the experimental results.

关键词： superconducting nanowire single photon detector package fiber coupling thermal expansion and contraction

作者: Liu Deng-kuan Chen Si-jing You Li-xing

作者单位: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystemand Information Technology(SIMIT), CAS, 200050

会议类型: 国际会议

会议名称: 中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)

会议地点: 杭州

会议语种:英文

页码: 1-9

在线出版日期: 2012-11-04（万方平台首次上网日期，不代表论文的发表时间）