980 nm和1480 nm LD混合泵浦两段级联掺铒光纤放大器实验研究

采用两段级联掺铒光纤、９８０ｎｍ和１４８０ｎｍＬＤ混合泵浦方式，实验分析比较了内插光隔离器和内插光隔离－耦合环光路结构掺铒光纤放大器（ＥＤＦＡ）的增益、噪声系数和输出功率特性。研制出内插光隔离－耦合环的ＥＤＦＡ，在信号波长１５５３．５ｎｍ处，小信号增益为４２．８ｄＢ，噪声系数为４．４ｄＢ，输出功率为１５．２ｄＢｍ。

Experimental Study of Two stage Erbium Doped Fiber Amplifiers Pumped by 980 nm and 1480 nm LD

Based on a two stage fiber, Erbium doped fiber amplifiers (EDFAs) pumped by 980 nm and 1480 nm laser diodes (LD) are investigated. Experimental comparisons of gain, noise figure and output power between the intermediate isolator configuration and the loop coupling configuration are discussed. A small signal gain of 42.8 dB of EDFA has been obtained for the loop coupling configuration. The minimum noise figure and maximum output power at wavelength of 1553.5 nm are 4.4 dB and 15.2 dBm, respectively.