Title :
Performance Enhancement of Multiwavelength Conversion of RZ-DPSK Based on Four-Wave Mixing in Semiconductor Optical Amplifier
Author :
Wen, He ; Jiang, Huan ; Zheng, Xiaoping ; Zhang, Hanyi ; Guo, Yili
Author_Institution :
Tsinghua Univ., Beijing
Abstract :
In this letter, we propose two methods to enhance the performance of multichannel wavelength conversion of return-to-zero differential phase-shift-keying signal in a semiconductor optical amplifier (SOA) based on four-wave-mixing effect. The first one is optimizing the relative time delay of the multichannel signal to reduce the crosstalk-induced penalty in SOA. The second one is using the synchronous clock pumping to raise the power of converted signal. The experiment on wavelength conversion of two channels at 10-Gb/s signal showed the power penalty was improved more than 1 dB in the first method and about 1.5 dB in the second method.
Keywords :
multiwave mixing; optical communication equipment; semiconductor optical amplifiers; four-wave mixing; multiwavelength conversion; return-to- zero differential phase-shift-keying; semiconductor optical amplifier; synchronous clock pumping; Clocks; Crosstalk; Delay effects; Fiber nonlinear optics; Four-wave mixing; High speed optical techniques; Optical interferometry; Optical receivers; Optical wavelength conversion; Semiconductor optical amplifiers; Clock pumping; four-wave mixing (FWM); semiconductor optical amplifier (SOA); wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.902904
