Driven by the ever-increasing need for more network capacity, a broad research community that spans different technical fields is actively engaged in finding the optimal cost/performance trade-offs for the future deployment of high-performance optical fiber communication systems. A key challenge in this pursuit is exploring cost-effective performance monitoring.
This book reviews several of the most up-to-date performance monitoring schemes for advanced optical fiber networks, including the monitoring of optical-signal-to-noise-ratio (OSNR) and other non-catastrophic effects, such as chromatic dispersion (CD), polarization mode dispersion (PMD) and polarization dependent loss (PDL). More importantly, performance monitoring is critical to facilitate the mitigation of various channel degrading effects, a goal towards which both the industrial and research communities have put tremendous efforts in the last few years. Therefore, a review of channel-degrading effect mitigation will also be given, incorporating monitoring as part of different approaches. To benefit readers from different fields with various backgrounds, this book also gives a brief introduction to different degrading effects before discussing and comparing a variety of monitoring schemes.