Md. Nur-Al-Safa BHUIYAN^1*, Motoharu MATSUURA², Hung Nguyen TAN¹, and Naoto KISHI¹

¹Department of Communication Engineering and Informatics, University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
²Center for Frontier Science and Engineering, University of Electro-Communications, Chofu, Tokyo 182-8585, Japan

(Received February 15, 2013; Revised October 21, 2013; Accepted November 19, 2013)

Transmission characteristics of polarization shift keying (PolSK) signal is experimentally demonstrated in this work. Performance degradation due to transmission is improved using optical phase conjugation (OPC) technique. The wavelength converter based on the proposed state of polarization (SOP) transparent scheme for PolSK signal is effective to use it as mid-link optical phase conjugator and which is difficult to achieve using conventional wavelength conversion scheme. It is found that for fiber transmission, the performance of both of the orthogonal SOPs of the PolSK signal is different for their respective chirping characteristics which can be optimized to be similar using proposed OPC technique.

Key words: fiber optics communication, nonlinear optics, four-wave-mixing, phase conjugation

^*E-mail address: safa@ru.ac.bd