@Article{Miller_etal2011,
author="Miller, Aaron J.
and Lita, Adriana E.
and Calkins, Brice
and Vayshenker, Igor
and Gruber, Steven M.
and Nam, Sae Woo",
title="Compact cryogenic self-aligning fiber-to-detector coupling with losses below one percent",
journal="Optics Express",
year="2011",
volume="19",
number="10",
pages="9102--9110",
optkeywords="TES",
abstract="We present a compact packaging technique for coupling light from a single-mode telecommunication fiber to cryogenic single-photon sensitive devices. Our single-photon detectors are superconducting transition-edge sensors (TESs) with a collection area only a factor of a few larger than the area of the fiber core which presents significant challenges to low-loss fiber-to-detector coupling. The coupling method presented here has low loss, cryogenic compatibility, easy and reproducible assembly and low component cost. The system efficiency of the packaged single-photon counting detectors is verified by the {\^a}{\texteuro}{\oe}triplet method{\^a}{\texteuro} of power-source calibration along with the {\^a}{\texteuro}{\oe}multiple attenuator{\^a}{\texteuro} method that produces a calibrated single-photon flux. These calibration techniques, when used in combination with through-wafer imaging and fiber back-reflection measurements, give us confidence that we have achieved coupling losses below 1 {\%} for all devices packaged according to the self-alignment method presented in this paper.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=666), last updated on Wed, 14 Dec 2011 20:50:10 -0600"
}