光电子快报(英文版), 2012, 8 (2): 89, Published Online: Jul. 12, 2017  

All-optical ultra-wideband doublet signal source based on the cross-gain modulation in a semiconductor optical amplifier

Author Affiliations
1 College of Optoelectronic Engineering, Nanjing University of Posts & Telecommunications, Nanjing 210046,China
2 China Mobile Group Hainan CO., LTD, Haikou 570125 , China
Abstract
We propose a novel scheme to generate the ultra-wideband (UWB) doublet signal pulse based on the cross-gain modulation (XGM) in a semiconductor optical amplifier (SOA). In the scheme, only an optical source and an SOA are needed. As there is only one wavelength included in the output doublet signal pulse, no time difference between the upper and down pulses is introduced during the transmission process. By using the software of Optisystem 7.0, the impacts of the optical power, the SOA current, the wavelength and the input signal pulse width on the generated doublet pulse are simulated and tudied numerically. The results show that when the pulse width of the input signal pulse is larger, the output signal pulse is better, and is insensitive to the change of wavelength. In addition, the ultra-wideband positive and negative monocycles can be generated by choosing suitable optical source power and SOA current.

ZHAO Zan-shan, LI Pei-li, ZHENG Jia-jin, PAN Ting-ting, HUANG Shi-jie, LUO You-hong. All-optical ultra-wideband doublet signal source based on the cross-gain modulation in a semiconductor optical amplifier[J]. 光电子快报(英文版), 2012, 8(2): 89.

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