关于未来高速光通信传输线的设想  

Consideration of Transmission Line for Future Lightwave Systems

作　　者：王伟[1] 郭尚平[1] 沈壁川 简水生[1] 

机构地区：[1]北方交通大学

出　　处：《通信学报》1996年第4期87-92,共6页Journal on Communications

基　　金：国家自然科学基金

摘　　要：我们建议一种新的色散补偿方法，由连接两种在１．５５μｍ工作窗口具有相反非零平坦色散值的色散互补光纤（ＬＤ－ＤＳＦ）作为高速、长距离光纤通信系统的传输媒介，这样的传输线能够有效地抵消传输线的色散和抑制非线性效应。我们设计并用ＭＣＶＤ工艺制备了在１．５５μｍ波长处分别具有±２ｐｓ／（ｎｍ·ｋｍ）色散的这些光纤ＬＤ－ＤＳＦ，连接后其总色散在１．５５μｍ波长处表现出０．０１８５ｐｓ／（ｎｍ２·ｋｍ）低的色散坡度。本文还对不同芯子结构的光纤所具有影响非线性的有效芯子面积（Ａｅｆｆ）进行了研究。We propose a new approach to dispersion compensation by connecting two kinds of nonzero dispersion-shifted optical fibers (LD-DSFs) with opposite dispersion and low dispersion slope at the operating window of 1. 55μm as transmission line which can cancel transmission line dispersion and suppress nonlinear effects efficiently in high-bit-rate, long-haul systems. These LD-DSFs which are designed and fabricated by means of MCVD process exhibit dispersion around ±2ps/(nm· km) respectively and total link low dispersion slope 0.0185ps/(nm2· km) in thewavelength of 1. 55μm. The effective core area (Aeff) is investigated for different fiber core structures.

关 键 词：色散 非线性 光纤传输线 传输线 光通信 

分 类 号：TN818[电子电信—信息与通信工程] TN929.1