Open AccessAnalytical expression for large signal transfer function of an optically filtered analog link
Author(s) -
T.C. Banwell,
Anjali Agarwal,
P. Toliver,
J. Jackel,
T. K. Woodward
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.015449
Subject(s) - optics , passband , distortion (music) , transfer function , linearity , optical transfer function , linearization , physics , optical link , nonlinear distortion , modulation (music) , quadrature (astronomy) , intermodulation , phase modulation , nonlinear system , bandwidth (computing) , computer science , phase noise , band pass filter , telecommunications , acoustics , optical fiber , amplifier , electrical engineering , quantum mechanics , engineering
We present an analytical expression for the transfer function of an optically-filtered radio frequency photonic link using phase modulation and coherent detection. This solution is applicable to quadrature passband signals and is significant for evaluating the distortion and consequently improving the linearity of such electrical-optical-electrical links. We show that the nonlinearity appears as an envelope distortion and discuss linearization techniques along with experimental validation.