Title :
40 Gb/s NRZ-DQPSK Data All-Optical Wavelength Conversion Using Four Wave Mixing in a Bulk SOA
Author :
Krzczanowicz, Lukasz ; Connelly, M.J.
Author_Institution :
Dept. of Electron. & Comput. Eng., Univ. of Limerick, Limerick, Ireland
Abstract :
Differential quadrature phase shift keying (DQPSK) modulation has become particularly attractive in high-speed optical communications because of its resistance to fiber nonlinearities and its more efficient use of fiber bandwidth. Because of its wavelength conversion ability, semiconductor optical amplifier (SOA) four wave mixing effect has attracted much attention. We experimentally study the FWM wavelength conversion of 40 Gb/s (20 GBd) NRZ-DQPSK data. A bulk SOA with 21 dB gain and 10 dBm output saturation power is used. The Q-factors of the input and wavelength converted signal are measured. Some signal regeneration properties are shown. A Q-factor improvement up to 1.7 dB is observed.
Keywords :
Q-factor; differential phase shift keying; multiwave mixing; optical wavelength conversion; quadrature phase shift keying; semiconductor optical amplifiers; FWM wavelength conversion; NRZ-DQPSK data all-optical wavelength conversion; Q-factor improvement; bit rate 40 Gbit/s; bulk SOA; differential quadrature phase shift keying modulation; fiber nonlinearities; four wave mixing effect; gain 21 dB; high-speed optical communications; output saturation power; semiconductor optical amplifier; signal regeneration properties; Four-wave mixing; Optical fiber amplifiers; Optical wavelength conversion; Probes; Q-factor; Semiconductor optical amplifiers; DQPSK; all optical wavelength conversion; four wave mixing; phase modulation; semiconductor optical amplifier;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2288010
