【摘 要】
：
从90年代初,一些长途电信运营公司和其他通信公司就开始雄心勃勃地在它们的通信网中引进了诸如色散位移光纤、掺铒光纤放大器(EDFA)和波分复用等光纤通信新技术。这些技术可
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从90年代初,一些长途电信运营公司和其他通信公司就开始雄心勃勃地在它们的通信网中引进了诸如色散位移光纤、掺铒光纤放大器(EDFA)和波分复用等光纤通信新技术。这些技术可以提供更高的传输速率,更长的中继距离和多波长复用。另外,长途通信网体系结构的更新和崭新的1550nm传输技术的引进也展示了通信市场中一些重要的发展趋势。 光波器件 使用一个EDFA,光波信号无需中继放大或再生,一般传输距离可达120km以上。光纤放大器可以同时放大多个波
Since the early 1990s, a number of long distance carriers and other telecommunications companies have started to ambitiously introduce new optical communication technologies such as dispersion-shifted fibers, erbium-doped fiber amplifiers (EDFA) and wavelength division multiplexing in their communications networks. These technologies can provide higher transmission rates, longer relay distances and multi-wavelength multiplexing. In addition, the update of the long-distance communication network architecture and the introduction of the new 1550nm transmission technology also show some important trends in the communications market. Lightwave devices use an EDFA, light signal without relay amplification or regeneration, the general transmission distance up to 120km or more. Fiber amplifiers can amplify multiple waves simultaneously
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