Title :
Polarization-Insensitive Wavelength Conversion by FWM in a Highly Nonlinear PCF of Polarization-Scrambled 10-Gb/s RZ-OOK and RZ-DPSK Signals
Author :
Astar, W. ; Lenihan, A.S. ; Carter, G.M.
Author_Institution :
Lab. for Phys. Sci. (LPS), College Park
Abstract :
Wavelength conversion of polarization-scrambled 10-Gb/s on-off keyed and differential phase-shift-keyed signals for which the pulse format was 33% return-to-zero, has been achieved by partially degenerate four-wave mixing in a record 20-m-short highly nonlinear photonic crystal fiber. It was found that a minimum pump-probe detuning of ~9 nm was required to achieve polarization-insensitive wavelength conversion of <1 dB, resulting in a 10-9-receiver sensitivity penalty of <1 dB, for both modulation formats.
Keywords :
amplitude shift keying; differential phase shift keying; multiwave mixing; optical fibre communication; optical fibre polarisation; optical receivers; optical wavelength conversion; photonic crystals; ON-OFF keying; RZ-DPSK signals; RZ-OOK signals; bit rate 10 Gbit/s; dense wavelength-division-multiplexed networks; differential phase-shift-keyed signals; four-wave mixing; highly nonlinear photonic crystal fiber; modulation formats; polarization-insensitive wavelength conversion; polarization-scrambled signals; pump-probe detuning; receiver sensitivity penalty; return-to-zero pulse format; size 20 m; Birefringence; Differential phase shift keying; Differential quadrature phase shift keying; Four-wave mixing; Modulation; Optical fiber polarization; Optical fiber theory; Photonic crystal fibers; Wavelength conversion; Wideband; on–off keying (OOK); Birefringence; differential phase-shift keying (DPSK); four-wave mixing (FWM); modulation formats; photonic crystal fiber (PCF); polarization scrambling; return-to-zero (RZ); wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.905052
