ABSTRACT
Today’s society relies on broadband communication solutions with applications such as high-speed Internet access, Internet of Things, mobile voice and data services, multimedia broadcast systems and high-capacity data networking for grid computing and remote storage. Laboratory-based standard single-mode fiber transmission experiments are edging ever closer to information theory-based capacity limits, estimated at ∼100-200 Tbit/s due to inter-channel nonlinear effects. Nonlinear impairments pose a major challenge, which can be partly overcome by intelligent design of modulation formats. Novel coded modulation schemes address nonlinear impairment mitigation as well as mitigation of other detrimental effects such as polarization dependent loss and cycle slips due to excessive phase noise, Transmission demand continues to exceed installed system capacity, and higher-capacity wavelength division multiplexing systems are required to economically meet this ever-increasing demand for communication services. There are many considerations that influence technology selection for network operators building modern optical networks: fiber capacity, network cost, network engineering simplicity, port density, power consumption, and optical layer restoration.
