Feasibility study of coherent LEO-ground link system using an optical injection phase lock loop technique

Yozo Shoji,Morio Toyoshima,Martyn J Fice,Alwyn J Seeds,Yoshihisa Takayama

doi:10.1109/icsos.2011.5783690

Feasibility study of coherent LEO-ground link system using an optical injection phase lock loop technique

Yozo Shoji, Morio Toyoshima + Show 3 more

https://doi.org/10.1109/icsos.2011.5783690

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Publication Date: May 1, 2011

Citations: 7

Affiliation: National Institute of Information and Communications Technology, University College London

#Optical Injection Phase Lock Loop #Optical Phase Lock Loop + Show 8 more

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Abstract

The feasibility of an optical injection phase lock loop technique for use in a coherent laser communications link between a LEO (Low Earth Orbit Satellite) and a OGS (Optical Ground Station) is studied. The Doppler frequency shift in the LEO-OGS coherent link is estimated and the impact on the link performance is investigated. It is demonstrated experimentally that a 10 Gbps BPSK link can successfully maintain stable frequency and phase locking status under the condition that the signal laser frequency changes over 9 GHz at a frequency deviation rate up to 1 Hz, which is ample to meet the requirement for the LEO-OGS coherent link.

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