Celebrating the 20^ th anniversary of Optics Express, this paper reviews the evolution of
optical fiber communication systems, and through a look at the previous 20 years attempts to …

The recently developed digital coherent receiver enables us to employ a variety of spectrally
efficient modulation formats such as-ary phase-shift keying and quadrature-amplitude …

Due to its absorption properties in atmosphere, the mid-infrared (mid-IR) region has gained
interest for its potential to provide high data capacity in free-space optical (FSO) …

A paradigm shift in optical communication networks is proposed, with the introduction of a
new ecosystem of devices and components with the capability of transforming current point …

Lightwave communications is a necessity for the information age. Optical links provide
enormous bandwidth, and the optical fiber is the only medium that can meet the modern …

Several approximate non-linear fiber propagation models have been proposed over the
years. Recent re-consideration and extension of earlier modeling efforts has led to the …

Digital coherent transceivers have revolutionized optical fiber communications due to their
superior performance offered compared to intensity modulation and direct detection based …

The trade-off between more user bandwidth and quality of service requirements introduces
unprecedented challenges to the next generation smart optical networks. In this regard, the …

Digital coherent receivers have caused a revolution in the design of optical transmission
systems, due to the subsystems and algorithms embedded within such a receiver. After …

As 100-Gb/s coherent systems based on polarization-division multiplexed quadrature phase
shift keying (PDM-QPSK), with aggregate wavelength-division multiplexed (WDM) capacities …