Qiang Ma,Pei-li Li,Jia-jin Zheng,Dan-hong Shen,Meng Zhao,Wen Zhou,Zan-shan Zhao.Generation of an ultra-wideband triplet signal based on semiconductor optical amplifier[J].Optoelectronics Letters,2013,9(3):161-164 Generation of an ultra-wideband triplet signal based on semiconductor optical amplifier Author Name Affiliation E-mail Qiang Ma  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China    Pei-li Li  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China  lipl@njupt.edu.cn  Jia-jin Zheng  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China    Dan-hong Shen  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China    Meng Zhao  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China    Wen Zhou  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China    Zan-shan Zhao  School of Optoelectronics Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China China Mobile Group Hainan CO., LTD, Haikou, 570125, China    Abstract:       We propose a novel ultra-wideband (UWB) triplet signal source based on the cross-gain modulation (XGM) in semiconductor optical amplifier (SOA). In the proposed scheme, only an optical source and two SOAs are needed, so the all-optical structure is compact. A triplet optical pulse with center frequency of 6.25 GHz and fractional bandwidth of 83% is obtained by the scheme. The extinction ratio can be improved by the counter-propagating scheme. The triplet pulse signal with only one wavelength can be easily controlled, and can aviod the dispersion effect. The output triplet pulse signal is insensitive to the light wavelength shifts, its available wavelength range is wide, the dynamic range of the input power is more than 6 dBm, and the bias current of the SOAs is exhibited. Hits: 4126 Download times: 98 View Full Text    Download reader