R&D Towards Cryogenic Optical Links
Mark Christiansen, Raphael Galea, Datao Gong, Suen Hou, David, Lissauer, Chonghan Liu, Tiankuan Liu, Veljko Radeka, Pavel Rehak, John, Sondericker, Ryszard Stroynowski, Da-Shung Su, Peter Takacs, Helio Takai,, Valeri Tcherniatine, Ping-Kun Teng, Craig Thorn, Annie C. Xiang
TL;DR
This paper reports on testing various optical and electronic components at cryogenic temperatures down to 77 K, demonstrating their potential for use in liquid argon detector environments.
Contribution
It presents experimental validation of optical links and components functioning reliably at cryogenic temperatures, advancing their integration into LArTPC detectors.
Findings
MOSFETs and ring oscillators operate down to 4.2 K.
Laser diodes lase from room temperature to 77 K.
Optical fibers show minimal attenuation change at cryogenic temperatures.
Abstract
A number of critical active and passive components of optical links have been tested at 77 K or lower temperatures, demonstrating potential development of optical links operating inside the liquid argon time projection chamber (LArTPC) detector cryostat. A ring oscillator, individual MOSFETs, and a high speed 16:1 serializer fabricated in a commercial 0.25-um silicon-on-sapphire CMOS technology continued to function from room temperature to 4.2 K, 15 K, and 77 K respectively. Three types of laser diodes lase from room temperature to 77 K. Optical fibers and optical connectors exhibited minute attenuation changes from room temperature to 77 K.
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