色散线性度可调的大啁啾FBG色散补偿器  

Dispersion Linearity Tunable Compensator Based on Large Chirped FBG

作　　者：张昊[1,2] 邱怡申[1] 李晖[1] 陈怀熹[1] 陈书明[1] 吴会松[1] 李贤[2] 周长忍[2] 

机构地区：[1]福建师范大学物理与光电信息科技学院,福州350007 [2]福建江夏学院实验与实训中心,福州350007

出　　处：《桂林理工大学学报》2012年第2期276-280,共5页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(61178089);福建省教育厅A类科技项目(JA11271);福建江夏学院科研项目(2010B022)

摘　　要：针对传统大啁啾FBG色散补偿技术中色散曲线线性度难以控制的问题,分析了相对啁啾系数比值与色散线性度之间的关系,依此提出一种基于大啁啾FBG的中继色散补偿器设计方案。该补偿器通过调节一阶和二阶啁啾系数的比值,实现色散曲线线性度可调的功能,且具有补偿带宽范围大、适合WDM系统远程中继补偿的特点。将该设计作为中继补偿器配置在500 km、8通道WDM系统中进行模拟实验,论证了该补偿器的效果。Dispersion compensation is a vital factor in optical fiber communication. To the traditional problem of hard-to-control dispersion linearity in large chirped FBG, the relationship between relative chirp coefficient and dispersion linearity is studied. A design of a relay dispersion compensator is demonstrated based on large chirped FBG. The compensator can optimise dispersion linearity via adjusting the ratio of second order chirp coefficient to first order chirp coefficient, with big bandwidth and feasibility of relay dispersion compensation. A numerical simulated experiment of equipping the compensator in a 500 km long, 8 channeles WDM system proves the feasibility of this design.

关 键 词：大啁啾FBG 色散补偿器 色散线性度 相对啁啾系数 

分 类 号：TN929.11[电子电信—通信与信息系统]