【作者】 冉曾令； 饶云江；

【Author】 RAN ZengLing RAO YunJiangSchool of Communication and Information Engineering, University of Electronic Science & Technology of China, Chengdu, Sichuan 610054, China

【机构】 电子科技大学通信和信息工程学院；

【摘要】 从理论和实验上优化设计了基于高频二氧化碳激光写入的长周期光纤光栅(LPFG)带阻滤波器的掺铒光纤放大器(EDFA).在在线EDFA中插入了带阻比高达33dB的LPFG噪声滤波器后,理论计算表明掺铒光纤中离子反转率得到了较大的提高,使得EDFA的增益得到了较大幅度的提高,同时噪声系数也得到了降低.实验上,在铒纤中插入LPFG后,获得了小信号一个增益高达37dB和噪声系数(NF)为4dB的EDFA,使EDFA的增益被提高了约7dB,噪声系数降低了约0.5dB.更多还原

【Abstract】 In-Line Er-Doped Fiber Amplifiers are designed and optimized which are based on LPFG band-stop filter written by high frequency CO2 laser theoretically and practically. After LPFG filter with band rejection ratio of 33dB is inserted in the EDF as an amplified spontaneous emission (ASE) noise filter, theoretical calculation shows that the ion inversion rate is improved significantly which leads to gain increase and NF reduction of the EDFA. Experimentally, A EDFA with gain of 37dB and NF of 4dB is archived. Due to the application of the LPFG noise filter, the gain of the EDFA is improved by 7dB, and the noise figure(NF) is reduced by 0.5dB.更多还原