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Frequency tracking optical beamforming system using uncooled Fabry‐Perot lasers
Author(s) -
Ren Jianqiao,
Pulikkaseril Cibby,
Yi Xiaoke
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30091
Subject(s) - fabry–pérot interferometer , laser , optics , microwave , materials science , phase (matter) , amplitude , beamforming , optoelectronics , physics , electronic engineering , engineering , telecommunications , quantum mechanics
We present a novel optical beamforming network that is able to use an uncooled Fabry‐Perot (FP) laser as the optical source. This is achieved by tracking the frequency and power drift of an FP laser and compensating these changes with programmable amplitude and phase in a liquid crystal‐on‐silicon Fourier domain optical processor. The system realizes six microwave phase shifters that operate simultaneously over 12–39.5 GHz with amplitude and phase response variation of 6.1 dB and 14.8°, respectively, under the conditions of changing laser current. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2537–2540, 2016