Title :
Comparison of Cross-Gain Modulation Effect of Manchester-Duobinary, RZ-DPSK, NRZ-DPSK, RZ, and NRZ Modulation Formats in SOAs
Author :
Li, Zhaohui ; Dong, Yi ; Lu, Chao ; Wen, Yang Jing ; Wang, Yixin ; Hu, Weisheng ; Cheng, Tee Hiang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
Conventional on-off keyed signals, such as return-to-zero (RZ) and nonreturn-to-zero (NRZ) signals are susceptible to cross-gain modulation (XGM) in semiconductor optical amplifiers (SOAs) due to pattern effect. In this letter, XGM effect of Manchester-duobinary, RZ differential phase-shift keying (RZ-DPSK), NRZ-DPSK, RZ, and NRZ signals in SOAs were compared. The experimental results confirmed the reduction of crosstalk penalty in SOAs by using Manchester-duobinary signals
Keywords :
Arrayed waveguide gratings; Costs; Crosstalk; Differential phase shift keying; Distributed feedback devices; Erbium-doped fiber amplifier; Modulation; Optical signal processing; Semiconductor optical amplifiers; Wavelength division multiplexing; Cross-gain modulation (XGM); Manchester-duobinary; modulation format; semiconductor optical amplifier (SOA);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887886
