论文部分内容阅读
本文简述单模光纤设计进展的四个阶段。从常规单模光纤开始，零色散波长于光纤通信工作的１３１μｍ，其后激光管技术改进和光纤放大器实用化，使光纤通信工作波长转移，相应地出现零色散移位至１５５μｍ的单模光纤（ＤＳＦ）。近年因光纤内部功率密度引起非线性，妨碍波分多路系统的运用，认为光纤色散仍有益处，从而设计１５５μｍ传输窗口无零色散的单模光纤（ＮＺＤＦ）。这是新一代单模光纤设计，用以满足大容量和长距离通信的需要。与此同时，为了充分利用已经敷设的多余的常规单模光纤，改在１５５μｍ窗口工作，再设计在１５５μｍ提供负色散的色散补偿光纤（ＤＣＦ）。
This article briefly describes the four stages of the development of single-mode fiber design. Starting from the conventional single-mode fiber, the zero-dispersion wavelength is 1.31μm for optical fiber communication. After that, the laser tube technology is improved and the optical fiber amplifier is practically used. The wavelength of optical fiber communication is shifted, correspondingly, the zero-dispersion shifts to 155μm Single mode fiber (DSF). In recent years, due to the non-linearity of the internal power density of the optical fiber, which hinders the application of the WDM system, the dispersion of the optical fiber is still considered to be beneficial, so as to design a NZD with zero dispersion in the 155 μm transmission window. This is a new generation of single-mode fiber design to meet the needs of high-capacity and long-distance communications. In the meantime, in order to make full use of the excess conventional single-mode fiber already laid, it was modified to operate in a 1 55μm window and then designed to provide negative dispersion dispersion compensation fiber (DCF) at 1 55μm.