Superconducting Nanowire Single Photon Detectors On-Fiber
Gil Bachar, Ilya Baskin, Oleg Shtempluck, Eyal Buks
TL;DR
This paper introduces a new on-fiber fabrication method for superconducting nanowire single photon detectors that enhances light coupling efficiency while maintaining small size and high speed.
Contribution
It presents a novel on-fiber SNSPD design and fabrication process that improves light mode overlap and device integration without sacrificing performance.
Findings
High detection efficiency achieved
Small device dimensions maintained
Fast operation speed preserved
Abstract
We present a novel design of a superconducting nanowire single photon detector (SNSPD) fabricated on a core of a single mode optical fiber. The proposed design allows high overlap between the fiber light mode and the detector, and consequently, our fabricated devices can remain small in dimension and maintain speed of operation, without scarifying the detection efficiency. The on-fiber fabrication method is detailed, together with experimental results. The proposed method can be exploited in the future for the fabrication of other fiber coupled devices.
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