The bandwidth and latency demands driven by 5G wireless networks are putting a focus on analog radio-over-fiber techniques as promising candidate for broadband optical fronthauling. In contrast to intensity modulation / direct detection systems, they commonly adopted mobile fronthaul links due their simplicity, we exploring migration option towards coherent transmission. A simplified homodyne r...

A high speed optical wireless-fiber solution was proposed in part I of this research with applications such as network backhaul and data center links. The system is based on the utilization state-of-the-art modulation multiplexing techniques fiber wireless communications, including multicore fibers (MCFs) coherent detection Kramer-Kronig (KK) receivers. In letter, we analyze performance compare...

The spectrally-sliced coherent receiver is an attractive solution for future optical access network applications where cost a sensitive factor, as it enables reduced bandwidth of the analog front-end components and analog-to-digital convertors when compared to conventional intradyne receiver. In proof-of-concept experiment, we demonstrate single-polarization 50 Gb/s QPSK C-band transmission exp...

Coherent optical fiber communications were studied extensively in the 1980s mainly because high sensitivity of coherent receivers could elongate the unrepeated transmission distance; however, their research and development have been interrupted for nearly 20 years behind the rapid progress in high-capacity wavelength-division multiplexed (WDM) systems using erbium-doped fiber amplifiers (EDFAs)...