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Updated: Jun 16, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Polarization-insensitive and widely tunable wavelength conversion for polarization shift keying signal based on four
Md Nur-Al-Safa Bhuiyan1, Motoharu Matsuura, Hung Nguyen Tan
1Department of Information and Communication Engineering, The Center for Frontier Science and Engineering, The University of Electro-Communications, Tokyo 182-8585, Japan. safa@ice.uec.ac.jp
Abstract:
A fiber-based polarization-insensitive and widely tunable all-optical wavelength conversion for polarization shift keying (PolSK) signal is experimentally demonstrated by means of four-wave-mixing (FWM) in highly non-linear fiber. Polarization sensitivity of our scheme is compared with the conventional one and the conversion performance of the PolSK signal is investigated. In our scheme, preservation of state of polarization (SOP) of input PolSK signal is possible on both of the converted spectral components in FWM spectrum. In addition, over 23 nm of wavelength tunable operation with high conversion performance is achieved and detailed bit-error-rate (BER) characteristics are measured for both the up- and down-converted signal.
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