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Optical transient waveform monitoring based on cross-gain modulation in semiconductor optical amplifier

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【Author】 YANG Yi1,2**,XIAO Zhong-yin1,LIU Jian-sheng3,and WANG Guan-jun31.Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200072,China2.College of Information Science and Technology,Donghua University,Shanghai 201620,China3.School of Electronic and Information Engineering,Beihang University,Beijing 100191,China

【机构】 Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University； College of Information Science and Technology,Donghua University； School of Electronic and Information Engineering,Beihang University；

【摘要】 An all-optical transient waveform equivalent time sampling system based on cross-gain modulation(XGM) in semiconductor optical amplifier(SOA) is presented.A noisy SOA dynamic model and PIN equivalent circuit function are employed for system evaluating.The results show this SOA-XGM sampler with subtracting postprocessing can achieve picosecond sampling window.The shape of sampling window can be adjusted by SOA bias current and amplitude of control pulse.Compared with amplified spontaneous emission(ASE) noise of SOA and thermal noise in PIN,the jitter of sampling control pulse causes most sampling error.Simulations show that this SOA-XGM sampler can be a capable candidate for transient waveform sampling.更多还原

【Abstract】 An all-optical transient waveform equivalent time sampling system based on cross-gain modulation(XGM) in semiconductor optical amplifier(SOA) is presented.A noisy SOA dynamic model and PIN equivalent circuit function are employed for system evaluating.The results show this SOA-XGM sampler with subtracting postprocessing can achieve picosecond sampling window.The shape of sampling window can be adjusted by SOA bias current and amplitude of control pulse.Compared with amplified spontaneous emission(ASE) noise of SOA and thermal noise in PIN,the jitter of sampling control pulse causes most sampling error.Simulations show that this SOA-XGM sampler can be a capable candidate for transient waveform sampling.更多还原

【关键词】 amplifier； waveform； sampler； jitter； noisy； capable； adjusted； coupler； fitting； candidate；

【基金】 supported by the National Natural Science Foundation of China(No.61077068);the Science and Technology Commission of Shanghai Municipality(STCSM)(No.08DZ2231100)

【文献出处】 Optoelectronics Letters ,光电子快报(英文版) , 编辑部邮箱 ,2012年01期

【分类号】TN722
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