Chinese Optics Letters, 2006, 4 (4): 04199, Published Online: Jun. 6, 2006
Performance evaluation of modulation formats in 40*40-Gb/s WDM repeaterless transmission systems
Abstract
Transmission performance of six modulation formats is numerically compared in 40*40-Gb/s wavelength division multiplexing (WDM) repeaterless systems. The results indicate that return-to-zero differential phase shift keying (RZ-DPSK) (33% duty cycle) demonstrates the best performance among all the formats when the accumulated amplified spontaneous emission power (AASEP) is small. But with the increasing of AASEP, the superiority of RZ-DPSK transmission performance over the other five modulation formats is vanished. AASEP is justified to be the major source for the deterioration of the superiority.
Guangshan Lu, Kun Xu, Jian Wu, Jintong Lin. Performance evaluation of modulation formats in 40*40-Gb/s WDM repeaterless transmission systems[J]. Chinese Optics Letters, 2006, 4(4): 04199.