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Optical Engineering

Experimental investigation of polarization insensitivity and cascadability with semiconductor optical amplifier-based differential phase-shift keyed wavelength converter
Author(s): Yaya Mao; Chongqing Wu; Bo Liu; Rahat Ullah; Feng Tian
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Paper Abstract

We experimentally investigate the polarization insensitivity and cascadability of an all-optical wavelength converter for differential phase-shift keyed (DPSK) signals for the first time. The proposed wavelength converter is composed of a one-bit delay interferometer demodulation stage followed by a single semiconductor optical amplifier. The impact of input DPSK signal polarization fluctuation on receiver sensitivity for the converted signal is carried out. It is found that this scheme is almost insensitive to the state of polarization of the input DPSK signal. Furthermore, the cascadability of the converter is demonstrated in a two-path recirculating loop. Error-free transmission is achieved with 20 stage cascaded wavelength conversions over 2800 km, where the power penalty is < 3.4    dB at bit error rate of 10 9 .

Paper Details

Date Published: 5 December 2017
PDF: 5 pages
Opt. Eng. 56(12) 126103 doi: 10.1117/1.OE.56.12.126103
Published in: Optical Engineering Volume 56, Issue 12
Show Author Affiliations
Yaya Mao, Nanjing Univ. of Information Science & Technology (China)
Chongqing Wu, Key Lab. of Luminescence and Optical Information, Beijing Jiao Tong Univ. (China)
Bo Liu, Nanjing Univ. of Information Science & Technology (China)
Rahat Ullah, Beijing Univ. of Posts and Telecommunications (China)
Feng Tian, Nanjing Univ. of Information Science & Technology (China)


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