In this Special Issue, we highlight recent progress in the application of ultra-high speed optical transmitters, photoreceivers, optical modulators, and integrated optoelectronics devices to advanced data/tele-communications over optical fibers, radio-over-fiber communications . In this Special Issue, we highlight recent progress in the application of ultra-high speed optical transmitters, photoreceivers, optical modulators, and integrated optoelectronics devices to advanced data/tele-communications over optical fibers, radio-over-fiber communications . The radio-over-fiber (RoF) technique can be used to replace the lossy and bulky MMW waveguides or coaxial cables by optical fibers. Our experience in leading-edge technology allows us to provide products that easily integrate within customers' systems. MACOM's photoreceiver product line focuses. The MPM3860 is a low-voltage, high-efficiency, 6A, single-channel power module solution. It is available in a QFN-24 (4mmx6mm) package (see Figure 3). 2mm) package, provides excellent output voltage ripple and input. Optical modules have a wide range of applications, with access network optical modules accounting for less than 15% of the market, including PON modules for wired access and 5G fronthaul modules for wireless base stations.