All-optical DPSK signal regeneration based on cross-phase modulation

作者：Striegler A^*; Schmauss B

来源：IEEE Photonics Technology Letters, 2004, 16(4): 1083-1085.

DOI：10.1109/LPT.2004.824934

• all-optical regeneration
• cross-phase modulation (XPM)
• differential phase-shift keying (DPSK)
• highly nonlinear fiber (HNLF)
• self-phase modulation (SPM)

We present a concept for all-optical differential phase-shift keying (DPSK) signal regeneration, which reduces amplitude jitter and preserves phase information. At first, we consider a configuration to regenerate optical signals based on spectral broadening by self-phase modulation (SPM). An analytical approach of the induced phase shift demonstrates why SPM is not suitable for DPSK signal regeneration. We derive conditions for DPSK signal regeneration and present a configuration based on cross-phase modulation. Amplitude jitter is reduced effectively while preserving DPSK phase information. Numerical simulations prove the results and demonstrate the performance of DPSK signal regeneration.

• 出版日期2004-4