An 8ch, 400 GHz monolithically integrated WDM channel selector featuring an array of quantum well semiconductor optical amplifiers (SOA) and arrayed waveguidegrating demultiplexer is presented. Reduction of fabrication complexity was achieved by using a single step selective area MOVPE to realize the different bandgap profiles for the SOA array and passive region. The selective growth mask dime...

We study the combined effects of dynamic gain saturation and two-photon absorption on the amplification of short pulses in semiconductor optical amplifiers and show that two-photon absorption can saturate the amplifier gain and limit the output pulse energies even for amplifiers with large gain saturation energies. We discuss the upper limits for the pulse energies obtainable from semiconductor...

Optical communication technology has been developed rapidly to achieve larger transmission capacity and longer transmission distance. In this paper we demonstrated optical time division multiplexing extended reach 10 Gb/s passive optical network (PON) architecture of 100 km length with 1:128 split ratio. The 100 km system is enabled by the use of corning nexcore fiber and corning SMF-28 fiber w...

Semiconductor Optical Amplifier (SOA) has attracted attention as a key component in supporting large capacity transmission systems. However, SOAs cause waveform distortion depending on the carrier lifetime, which ranges from picoseconds to nanoseconds, and this degrades signal quality. Thus, we are investigating suppressing by controlling gain characters time changing temperature of in-line opt...

Abstract In this paper, a Reflective Semiconductor Optical Amplifier based, Radio-over-Fibre access network configuration has been proposed to feed future millimeter-wave radio systems. The system architecture combines several approaches overcome the challenges of signal transmission. semiconductor optical amplifier modulator realizes colorless and relatively cost-effective Remote Antenna Unit....

An innovative overlapped-subcarrier multiplexing (O-SCM) technique is proposed for wavelengthdivision multiplexed (WDM) passive optical networks (PONs).Allowing a certain amount of spectral overlap between the uplink and the downlink maximizes the spectrum usage of bandwidth-limited reflective semiconductor optical amplifier (RSOA)-based optical network units (ONUs), while reducing the effect o...

The optical phase conjugation (OPC) process is thoughtfully investigated in a nonlinear bidirectional semiconductor amplifier subsystem (SOA), demonstrating the conversion through two ports of SOA, simultaneously. spectral responses, power curves and quality optimization conjugated are discussed simulation configuration. experimental investigation polarization-insensitive SOA further confirms O...

In this article, different amplifiers such as erbium doped fiber amplifier, Raman amplifier and semiconductor optical amplifier, have been investigated in inter-satellite links on optical wireless communication system. It has been observed that EDFA performs better at long range than Raman and SOA amplification while later mentioned amplifiers perform well in the context of less distances. Q-Fa...