Applications of optical fibers for communication, signal processing and acoustics

光纤网络构成了互联网和语音通信的主干。光纤传输速度从80年代的几Mb/s稳步提高到最近的Tb/s，使互联网服务更快。在光纤系统中，传输速度和传输距离主要受到传输损伤的限制。本研究计划著重在研究光纤的线性和非线性传输缺陷，以及如何减轻这些缺陷，以提高光纤的性能。我们建议开发快速的电均衡器来补偿光纤传播带来的线性和非线性损害。此外，还将研究在光纤链路末端引入光反向传播模块以实时补偿光纤非线性损伤的可能性。该模块可以补偿宽带上的非线性，因此，它与波分复用系统兼容。

A fiber-optic network forms a backbone of the internet and voice traffic. Fiber-optic transmission speed has steadily increased from several Mb/s in 80s to Tb/s recently, enabling faster internet services. The transmission speed and reach are mainly limited by the propagation impairments in fiber-optic systems. This research proposal focuses on the study of linear and nonlinear propagation impairmens in optical fibers and how to mitigate them so that the performance can be improved. We propose to develop fast electrical equalizers to compensate the linear and nonlinear impairments due to fiber propagation. The possibility of introducing an optical back propagation module at the end of the fiber-optic link that could compensate for fiber nonlinear impairments in real time will also be investigated. This module could compensate for nonlinearities over a wide band and therefore, it is compatible with wavelength division multiplexed systems.