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All optical signal level swapping and multilevel amplitude noise mitigation based on different regions of optical parametric amplification

Yinwen Cao, Morteza Ziyadi, Youichi Akasaka, Amirhossein Mohajerin-Ariaei, Jeng-yuan Yang, Ahmed Almaiman, Peicheng Liao, Fatemeh Alishahi, Nisar Ahmed, Asher J. Willner, Shigehiro Takasaka, Ryuichi Sugizaki, Joseph Touch, Motoyoshi Sekiya, Moshe Tur, and Alan E. Willner

Abstract

All optical signal level swapping and multilevel amplitude noise mitigation are experimentally demonstrated using the three gain regions of optical parametric amplification, i.e., linear, saturation, and inversion. The two-amplitude-shift-keying and eight-quadrature-amplitude-modulation optical communication systems with baud rates of both 10 and 20 Gbaud have been employed to demonstrate the proposed approaches. Less than 1% error-vector-magnitude degradation is observed after signal level swapping. For amplitude noise mitigation, a more than 20% decrease in amplitude error is confirmed.

© 2016 Optical Society of America

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