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一、发展轨迹 1.技术发展 目前光纤高速传输技术正沿着扩大单一波长传输容量、超长距离传输和波分复用(DWDM)系统3个方向发展。单一波长传输容量已做到40Gbit/s,超长距离传输达到了数千公里无再生,波分复用实验室最高水平已做到273个波长、每波长40Gbit/s的10.9Tbit/s系统(日本NEC)。在组网方面,现正从具有分插复用和交叉连接功能的光联网向利用光交换机构成的智能光网
First, the development path 1. Technology Development At present, optical fiber high-speed transmission technology is expanding along the single wavelength transmission capacity, long distance transmission and wavelength division multiplexing (DWDM) system in three directions. Single wavelength transmission capacity has been achieved 40Gbit / s, long distance transmission reached thousands of kilometers without regeneration, the highest level of wavelength division multiplexing laboratory has done 273 wavelengths, 40Gbit / s per wavelength 10.9Tbit / s system ( Japan NEC). In networking, is now from the optical add-drop multiplexed and cross-connect functions to the use of optical switch intelligent optical network