TY  - JOUR
AU  - Miller, Aaron J.
AU  - Lita, Adriana E.
AU  - Calkins, Brice
AU  - Vayshenker, Igor
AU  - Gruber, Steven M.
AU  - Nam, Sae Woo
PY  - 2011
DA  - 2011//
TI  - Compact cryogenic self-aligning fiber-to-detector coupling with losses below one percent
T2  - Opt. Express
JO  - Optics Express
SP  - 9102
EP  - 9110
VL  - 19
IS  - 10
KW  - TES
AB  - 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 “triplet method” of power-source calibration along with the “multiple attenuator” 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.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=666), last updated on Wed, 14 Dec 2011 20:50:10 -0600
ID  - Miller_etal2011
ER  -