用于S波段光纤拉曼放大器增益平坦的长周期光纤光栅设计  

Long-period Fiber Grating Using for Gain Flattening of S-band Fiber Raman Amplifier

作　　者：戴碧智[1] 张在宣[1] 

机构地区：[1]中国计量学院光电子技术研究所,浙江杭州310018

出　　处：《光电子技术与信息》2004年第6期63-66,共4页Optoelectronic Technology & Information

基　　金：中央财政部专项资助浙江省重大科研项目"分布式光纤拉曼放大器研制"(021101558)资助

摘　　要：根据实际所测得的S波段光纤拉曼放大器的信号增益谱,通过对长周期光纤光栅具体参数的选定,由两个长周期光纤光栅级联滤波的组合,可以使增益图谱在50 nm(1485-1535 nm)带宽内,增益平坦度达到±0.6dB以内.由三个长周期光纤光栅级联滤波组合,可以使增益图谱在49 nm(1490-1539 nm)带宽内,增益平坦度达到0.5 dB, 55 nm(1485-1540 nm)带宽内,增益平坦度达到1 dB.这对扩大长周期光纤光栅增益平坦滤波器的运用范围,扩大单泵浦S波段光纤拉曼放大器的有效增益带宽有着积极的意义.In this paper, long period fiber gratings(LPFG) were used to flatten actually tested gain spectrum of single pumped S-band fiber Raman amplifier according to choosing proper parameters of grating. The filters with two LPFGs can make gain spectrum to realize ?.6 dB variation within 50 nm (1485-1535 nm) ,and the filters with three LPFGs can make gain spectrum to realize 0.5 dB variation within 49 nm (1495-1539 nm ) and 1 dB variation within 5 nm(1485-1540 nm). It is very significant for extending the range of gain flattening filter with LPFGs and extending the band-width of gain spectrum of single pumped fiber Raman amplifier.

关 键 词：光纤拉曼放大器 增益平坦 长周期光纤光栅(LPFG) 

分 类 号：TN25[电子电信—物理电子学]