Results 21 to 30 of about 1,352 (191)

Performance analysis of a directly modulated semiconductor optical amplifiers using non‐return‐to‐zero, duobinary and quaternary pulse amplitude modulation signalling

open access: yesIET Optoelectronics, Volume 15, Issue 1, Page 8-19, February 2021., 2021
ABSTRACT Numerical investigation was done for the response of two semiconductor optical amplifiers (SOA) to direct modulation using three of the most commonly employed intensity modulation formats: non‐return‐to‐zero (NRZ), duobinary (DB) and quaternary pulse amplitude modulation (PAM‐4).
Ramón Gutiérrez‐Castrejón   +3 more
wiley   +1 more source

Performance optimization of RSOA based mm-wave radio-over-fibre access network

open access: yesOptical and quantum electronics, 2021
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.
E. Udvary
semanticscholar   +1 more source

Stable and Wavelength-Tunable Self-Injected Reflective Semiconductor Optical Amplifier-Based Fiber Laser

open access: yesIEEE Photonics Journal, 2015
In this investigation, we propose and demonstrate a stable and wavelength-tunable self-injected reflective semiconductor optical amplifier (RSOA)-based laser by using the Faraday rotator mirror (FRM) and the fiber mirror (FM) serving as a reflected ...
Yu-Fu Wu   +4 more
doaj   +1 more source

Self-Start Multi-Wavelength Laser Source with Tunable Delay-Line Interferometer and Optical Fiber Reflector for Wireless Communication System

open access: yesApplied Sciences, 2021
The radio-over-fiber (RoF) technique has gained a lot of interest recently, as the millimeter-wave signals can be generated and delivered in the optical domain with the advantages of low attenuation, high capacity, and being free from electromagnetic ...
Amare-Mulatie Dehnaw   +6 more
doaj   +1 more source

Theoretical Analysis of Directly Modulated Reflective Semiconductor Optical Amplifier Performance Enhancement by Microring Resonator-Based Notch Filtering

open access: yesApplied Sciences, 2018
We demonstrate the feasibility of using a single microring resonator (MRR) as optical notch filter for enabling the direct modulation of a reflective semiconductor optical amplifier (RSOA) at more than tripled data rate than possible with the RSOA alone.
Zoe V. Rizou, Kyriakos E. Zoiros
doaj   +1 more source

A Problem Analysis of RSOA-Based Optical Access

open access: yesElektronika ir Elektrotechnika, 2016
Using WDM multiplexing is one of the ways to increase PON bandwidth. But as WDM-PON is still expensive and difficult administered, the idea of using a Reflective Semiconductor Optical Amplifier (RSOA) is proposed. It can be installed in WDM-PON ONU network devices.
Tervydis, Paulius, Jankuniene, Ruta
openaire   +3 more sources

Intra-Cavity Chromatic Dispersion Impacts on 10-Gb/s Optical OFDM Transmissions Over 25-km Dual-RSOA-Based Self-Seeded PON Systems

open access: yesIEEE Photonics Journal, 2015
Owing to the lack of strong physical mechanisms capable of elaborately balancing a large number of longitudinal modes created in a self-seeded passive optical network (PON), the resulting coherent-like optical signals are vulnerable to frequency ...
M. L. Deng   +7 more
doaj   +1 more source

Study of the Effects of Cavity Mode Spacing on Mode-Hopping in III–V/Si Hybrid Photonic Crystal Lasers

open access: yesCrystals, 2021
We present a design methodology for hybrid lasers to realise mode-hop free operation by controlling the cavity mode spacing. In this study, a compact hybrid photonic crystal laser (H-PhCL) was employed which allowed a reduction of the Fabry–Perot length ...
Praveen K. J. Singaravelu   +5 more
doaj   +1 more source

Highly Reliable Metro-Access Network Based on a Dual-Fiber Ring Architecture and Optimized Protection Mechanisms

open access: yesIEEE Access, 2021
Network reliability is very important for the next generation of optical networks. In this paper, a highly reliable protection mechanism, which integrates the approaches of optical protection and microwave protection, is proposed for metro-access optical
Zerui Song   +5 more
doaj   +1 more source

MDM-TDM PON Utilizing Self-Coherent Detection-Based OLT and RSOA-Based ONU for High Power Budget

open access: yesIEEE Photonics Journal, 2016
A cost-effective mode-division-multiplexing and time-division-multiplexing passive optical network (MDM-TDM PON) utilizing a self-coherent detection for upstream signal at optical line terminal (OLT) and a high-gain reflective semiconductor optical ...
Yuanxiang Chen   +11 more
doaj   +1 more source

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