SOA nonlinear polarization rotation with linear polarization maintenance: Characterization and applications

作者：Fu Songnian^*; Wang Minxue; Zhong Wen De; Shum P; Wen Yang Jing; Wu Jian; Lin Jintong

来源：IEEE Journal of Selected Topics in Quantum Electronics, 2008, 14(3): 816-825.

DOI：10.1109/JSTQE.2008.919281

• all-optical signal processing
• nonlinear polarization rotation (NPR)
• polarization modulation
• semiconductor optical amplifier (SOA)
• wavelength conversion (WC)

We present characterization and applications of the nonlinear polarization rotation (NPR) with linear polarization maintenance arising in polarization-insensitive semiconductor optical amplifiers (SOAs). The NPR with linear polarization maintenance is characterized in terms of probe and pump power, bias current, pump polarization, as well as wavelength. The NPR with linear polarization maintenance is then exploited for simultaneous inverted and noninverted polarization-insensitive wavelength conversions (WCs) with 2R regeneration using a single polarization beam splitter (PBS). WC of 10 Gb/s with 2R regeneration is experimentally demonstrated in the whole G-band with a power penalty reduction of 1.2 dB for the inverted WC and 0.8 dB for the noninverted WC. The NPR with linear polarization maintenance is also applied to perform on-off-keying (OOK) to polarization-shift-keying (PoISK) format conversion in conjunction with WC function, where the power fluctuation caused by the SOA cross gain modulation (XGM) is successfully mitigated using two cascaded SOAs. The power fluctuation of the converted PoISK signal is reduced to less than 0.6 dB, while the extinction ratio (ER) of polarization modulation is maintained at larger than 30 dB.

• 出版日期2008-6
• 单位南阳理工学院; 北京邮电大学