Abstract
We describe a Fabry–Perot-based spectral filter for free-space quantum key distribution (QKD). A multipass etalon filter was built, and its performance was studied. The whole filter setup was carefully optimized to add less than 2 dB attenuation to a signal beam but block stray light by 21 dB. Simulations show that such a filter might be sufficient to allow QKD satellite downlinks during daytime with the current technology.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Alfonso Tello Castillo, Ugo Zanforlin, Gerald S. Buller, and Ross J. Donaldson
Opt. Express 31(24) 40317-40327 (2023)
Liying Han, Yang Li, Ping Xu, Xueying Tao, Wenbin Luo, Wenqi Cai, Shengkai Liao, and Chengzhi Peng
Appl. Opt. 61(3) 812-817 (2022)
Jean-Philippe Bourgoin, Brendon L. Higgins, Nikolay Gigov, Catherine Holloway, Christopher J. Pugh, Sarah Kaiser, Miles Cranmer, and Thomas Jennewein
Opt. Express 23(26) 33437-33447 (2015)