All-Optical Signal Regeneration in Polarization-Division-Multiplexing Systems

• Main Authors: A.-L. Yi, L.-S. Yan, B. Luo, W. Pan, J. Ye
• Format: Article
• Language: English
• Published: IEEE 2011-01-01
• Series: IEEE Photonics Journal
• Subjects: All-optical regeneration; self-phase-modulation (SPM); polarization-division-multiplexing (PDM); highly nonlinear fiber; polarization mode dispersion
• Online Access: https://ieeexplore.ieee.org/document/5936090/

Schemes of all-optical regeneration in polarization-division-multiplexing (PDM) systems are proposed and demonstrated with 2 × 10-Gb/s return-to-zero on-off-keying (RZ-OOK) transmission. Regeneration is achieved based on self-phase-modulation (SPM) effect and detuned filtering in highly nonlinear fiber (HNLF) with a polarization-diversified loop configuration. Furthermore, the ability of mitigating polarization-mode-dispersion (PMD) effects in PDM systems is evaluated. More than 3.7-dB eye-diagram-based signal-to-noise-ratio (SNR) improvement is achieved in the presence of 6.3-ps PMD as the pulsewidth of the PDM signal is about 18 ps.