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Optical Fiber Communication Conference

Gain Ripple and Passband Narrowing due to Residual Chromatic Dispersion in Non-Degenerate Phase-Sensitive Amplifiers

Shimpei Shimizu, Takushi Kazama, Takayuki Kobayashi, Takeshi Umeki, Koji Enbutsu, Ryoichi Kasahara, Yutaka Miyamoto

Published Jan 1, 2020• 4 citations
Publisher

Abstract

We theoretically show dispersion dependence of gain spectrum in non-degenerate PSA under phase locking, and experimentally demonstrate WDM amplification of PS-64QAM signal using PPLN-based PSA with gain-flattened spectrum by estimation and compensation of chromatic dispersion.
DOI
10.1364/ofc.2020.m1i.3

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We investigate a non-degenerate phase-sensitive amplifier (PSA) operating in gain saturation experimentally and numerically using the three-wave model. The phase-dependent gain and phase-to-phase transfer functions are obtained for different levels of saturation with good agreement between experimental and numerical data when higher-order FWM is small. Moreover, we identify an operating point where the PSA is found to be able to significantly reduce both phase- and amplitude noise simultaneously.
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