Results 11 to 20 of about 2,147 (127)

A Simple WDM-PON Architecture Together With Private Interconnected ONUs

open access: yesIEEE Access, 2021
In this paper, we present and investigate a wavelength-division-multiplexing passive optical network (WDM-PON) with symmetrical 28 Gbit/s on-off keying (OOK) access signals and 3 Gbit/s virtual private network (VPN) link between the optical network units
Chien-Hung Yeh   +4 more
doaj   +1 more source

Investigations of Backscattering Effects in Optical Fibers and Their Influences on the Link Monitoring

open access: yesIEEE Photonics Journal, 2017
In this paper, first, we employed the coupled-mode theory to investigate the backscattering power characteristics of Rayleigh backscattering (RB) and stimulated Brillouin scattering (SBS) both synchronously and precisely. We discovered how the RB and SBS
Qiguang Feng   +6 more
doaj   +1 more source

Intensification of noise tolerance against Rayleigh backscattering for bidirectional 10 Gbps WDM-FSO network by employing dual band of OFDM signal

open access: yesResults in Optics, 2021
A noteworthy scheme to transport dual band 10 Gbps 16 quadrature amplitude modulated orthogonal frequency division multiplexed signal for downlink and uplink channel over 55 km single mode fiber as well as 650-m free space is proposed and demonstrated ...
Paulomi Mandal   +6 more
doaj   +1 more source

Performance Enhancement and Capacity Enlargement for a DWDM-PON System Utilizing an Optimized Cross Seeding Rayleigh Backscattering Design

open access: yesApplied Sciences, 2019
In this work, a record of 16 channels, with future channel spacing in the telecommunication standardization sector of the International Telecommunications Union G.694.1 (ITU-T G.694.1) for Dense Wavelength Division Multiplexing (DWDM) (i.e., 12.5 GHz ...
Nazmi A. Mohammed, Ahmed Hamdi Mansi
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

Free Space Optical Communication in Long-Reach Unidirectional Ring-Architecture Fiber Network

open access: yesIEEE Access, 2020
In the work, a ring-constructed wavelength-division-multiplexing (WDM) access system for delivering multiple free space optical (FSO) wireless signals is investigated.
Chien-Hung Yeh   +4 more
doaj   +1 more source

Hybrid Self-Protected Fiber-FSO WDM-PON System with Fiber Breakage Prevention

open access: yesPhotonics, 2022
In this research, we present and design a blended wavelength-division-multiplexing passive optical network (WDM-PON) architecture to deliver both baseband and free-space optical (FSO) signals by using two wavelength bands over an available bandwidth to ...
Ching-Hsuan Hsu   +7 more
doaj   +1 more source

Spectral Dependence of Coherent Backscattering of Light in a Narrow-Resonance Atomic System [PDF]

open access: yes, 2003
We report a combined theoretical and experimental study of the spectral and polarization dependence of near resonant radiation coherently backscattered from an ultracold gas of 85Rb atoms. Measurements in an approximately 6 MHz range about the 5s^{2}S_{1/
C. I. Sukenik   +9 more
core   +3 more sources

25-GHz-Spaced DWDM-PON With Mitigated Rayleigh Backscattering and Back-Reflection Effects

open access: yesIEEE Photonics Journal, 2013
A novel 25-GHz-spaced dense wavelength-division multiplexing passive optical network (DWDM-PON) is proposed to improve the utilization of wavelength resource and mitigate the Rayleigh backscattering (RB) and back-reflection effects.
Zhao Zhou   +5 more
doaj   +1 more source

REAM intensity modulator-enabled 10Gb/s colorless upstream transmission of real-time optical OFDM signals in a single-fiber-based bidirectional PON architecture [PDF]

open access: yes, 2012
Reflective electro-absorption modulation-intensity modulators (REAM-IMs) are utilized, for the first time, to experimentally demonstrate colorless ONUs in single-fiber-based, bidirectional, intensity-modulation and direct-detection (IMDD), optical OFDM ...
Chow   +21 more
core   +1 more source

Home - About - Disclaimer - Privacy