Investigation of analog signal distortion introduced by a fiber phase sensitive amplifier

Debanuj Chatterjee; Yousra Bouasria; Weilin Xie; Tarek Labidi; Fabienne Goldfarb; Ihsan Fsaifes; Fabien Bretenaker; Fabien Bretenaker

doi:10.1364/JOSAB.397469

Journal of the Optical Society of America B
Vol. 37,
Issue 8,
pp. 2405-2415
(2020)
•https://doi.org/10.1364/JOSAB.397469

Investigation of analog signal distortion introduced by a fiber phase sensitive amplifier

Debanuj Chatterjee, Yousra Bouasria, Weilin Xie, Tarek Labidi, Fabienne Goldfarb, Ihsan Fsaifes, and Fabien Bretenaker

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Debanuj Chatterjee, Yousra Bouasria, Weilin Xie, Tarek Labidi, Fabienne Goldfarb, Ihsan Fsaifes, and Fabien Bretenaker, "Investigation of analog signal distortion introduced by a fiber phase sensitive amplifier," J. Opt. Soc. Am. B 37, 2405-2415 (2020)

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Abstract

We numerically simulate the distortion of an analog signal carried in a microwave photonics link containing a phase sensitive amplifier (PSA), focusing mainly on amplitude modulation format. The numerical model is validated by comparison with experimental measurements. By using the well-known two-tone test, we compare the situations in which a standard intensity modulator is used with the one where a perfectly linear modulator would be employed. We also investigate the role of gain saturation in the nonlinearity of the PSA. Finally, we establish the conditions in which the signal nonlinearity introduced by the PSA itself can be extremely small.

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Equations (15)

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$m$	Frequency	$θ_{j, m}$ (AM)	$θ_{j, m}$ (PM)
1	$ω_{j} - Ω$	$- π + φ$	$\frac{π}{2} + φ$
−1	$ω_{j} + Ω$	$- π - φ$	$\frac{π}{2} - φ$

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Journal of the Optical Society of America B