光波系统研究进展

Tingye Li
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引用次数: 18

摘要

自从第一次提出使用玻璃纤维波导作为电信传输介质的严肃建议以来,已经过去了20年。从那时起,大力的研究和开发工作导致光纤通信在整个电信行业的广泛应用。今天,光波系统的研究正在探索低损耗单模光纤的巨大潜在带宽,用于长途和局域网应用。使用实验性单频激光器和低噪声雪崩光电二极管的实验室系统已经在超过100公里长的单模光纤中实现了每秒千兆位的传输。相干技术保证了接收机的高灵敏度,并为密集的波长复用系统中的信道选择提供了有效的手段。第一次相干系统实验证实了理论上的期望,但前方还有许多挑战。其他新的地方分配和联网系统也在研究之中。本文综述了这方面的最新研究进展。
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Advances in lightwave systems research
Twenty years have passed since the first serious proposal was made to use a glass-fiber waveguide as a telecommunications transmission medium. Since then, vigorous research and development efforts have led to widespread applications of optical-fiber communication throughout the telecommunications industry. Today, lightwave systems research is exploring the vast potential bandwidth of low-loss single-mode fibers for long-haul and local-network applications. Laboratory systems with experimental single-frequency lasers and low-noise avalanche photodiodes have attained multi-gigabit-per-second transmission in single-mode fibers that are well over 100 km long. Coherent technology promises high receiver sensitivity and offers an efficient means for channel selection in a densely packed wavelength-multiplexed system. The first coherent-systems experiments have confirmed theoretical expectations but many challenges lie ahead. Other novel systems for local distribution and networking are also under study. This paper reviews recent research progress in these areas.
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Acronyms and abbreviations World-class hardware and transmission design Service creation technologies for the intelligent network International applications of AT&T's intelligent network platforms ISHMAEL: An integrated software/hardware maintenance and evolution environment
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