Characteristics of Sagnac Interferometer Based on Highly-Nonlinear Photonic Crystal Fiber for WDM C-Band-Shift-Free Optical Phase Conjugator

This is the first report showing the simultaneous bandwidth-shift-free phase conjugation with Q factor larger than 7, of 15×10 Gb/s WDM signal on 11.15-nm bandwidth located from 1539.77 to 1550.92 nm, using the optimal designed Sagnac based optical phase conjugator constructed by the 120-m-long highly-nonlinear photonic crystal fiber.