Results 21 to 30 of about 123 (115)

Unidirectional Ring-Based WDM Fiber Network for Both Downlink and Uplink Signal Access

, 2023
In the paper, a dual-bidirectional ring-type wavelength-division-multiplexing (WDM) access network with downlink and uplink signal access simultaneously using a single fiber backbone in clockwise and counterclockwise directions, respectively.
Chien-Hung Yeh, Chun-Yen Lin, Teng-Yao Yang, Chi-Wai Chow, Yu-Ting Lai, Wen-Piao Lin, Lan-Yin Chen, Kuan-Ming Cheng   +7 more
core   +1 more source

Use of Same WDM Channels in Fiber Network for Bidirectional Free Space Optical Communication With Rayleigh Backscattering Interference Alleviation

IEEE Access, 2019
In the paper, we present and demonstrate experimentally a 10 Gbit/s on-off keying (OOK) bidirectional wavelength-division-multiplexing (WDM) free space optical (FSO) communication architecture integrated in fiber network together with 5 m free space ...
Chien-Hung Yeh, Bo-Shen Guo, Chong-Sin Gu, Chi-Wai Chow, Wen-Piao Lin   +4 more
doaj   +1 more source

Single sideband techniques for next generation low-cost UD-WDM coherent PONs [PDF]

, 2021
In this thesis, two applications for splitter-based, coherent passive optical networks (PONs) are investigated. Coherent technologies enable ultra-dense wavelength division multiplexing (UD-WDM), increasing the dedicated data rates per application, the ...
Masanas Jiménez, Miquel
core   +1 more source

Using Downstream DPSK and Upstream Wavelength-Shifted ASK for Rayleigh Backscattering Mitigation in TDM-PON to WDM-PON Migration Scheme

IEEE Photonics Journal, 2013
A migration scheme from time-division-multiplex passive optical network (TDM-PON) to wavelength-division-multiplex PON (WDM-PON) using differential phase-shift keying (DPSK) for the downstream signal and wavelength-shifted amplitude-shift keying (WS-ASK)
C. W. Chow, C. H. Yeh
doaj   +1 more source

Signal Remodulation Ring WDM Passive Optical Network with Rayleigh Backscattering Interferometric Noise Mitigation

, 2011
—We propose and demonstrate a novel and simple signal remodulation ring-based wavelength division multiplexed passive optical network (WDM-PON) scheme with the capability to mitigate the Rayleigh backscattering (RB) beat noise in colorless signal ...
C. W. Chow, C. H. Yeh
core   +1 more source

Bandwidth assignment criteria against rayleigh backscattering effect in TDM-PON single-fibre wavelength-reuse networks

, 2011
In this paper, theoretical and numerical analysis for Rayleigh Backscattering (RB) in TDM-PON full-duplex single-fiber bidirectional transmission with burst mode upstream and reflective ONU are presented.
Polo Querol, Víctor, Prat Gomà, Josep Joan, López Pastor, Eduardo Tommy, Lázaro Villa, José Antonio   +3 more
core   +1 more source

External Optical Feedback Induced Noise in DFB Fiber Laser Sensor System [PDF]

, 2020
⎯External optical feedback effects due to reflection, Rayleigh backscattering and coherent Rayleigh backscattering in fiber distributed feedback (DFB) fiber laser sensor system have been investigated.
Yue-Feng Wu, Tuan-Wei Xu, Fang Li, Yu-Liang Liu   +3 more
core  

TWDM-PON With Signal Remodulation and Rayleigh Noise Circumvention for NG-PON2

IEEE Photonics Journal, 2013
We propose and demonstrate a 40-Gb/s (4 × 10 Gb/s) downstream and 10-Gb/s (4 × 2.5 Gb/s) upstream time-wavelength-division-multiplexed passive optical network (TWDM-PON) using signal remodulation. Here, a downstream differential-phase-shift-
C. W. Chow, C. H. Yeh, K. Xu, J. Y. Sung, H. K. Tsang   +4 more
doaj   +1 more source

Analysis of Spontaneous Raman and Rayleigh Scatterings in Distributed Fiber Raman Amplification Systems Based on a Random Distribution Model

IEEE Photonics Journal, 2017
The properties of light wave propagation with stochastic scattering in a fiber are particularly attractive because of their influence in various applications.
Qiguang Feng, Wei Li, Liyan Huang
doaj   +1 more source

Ring-Based WDM Access Network Providing Both Rayleigh Backscattering Noise Mitigation and Fiber-Fault Protection

, 2014
[[abstract]]In this paper, we propose and investigate a ring-based wavelength-division-multiplexing passive optical network (WDM-PON) providing both Rayleigh backscattering (RB) noise mitigation and fiber-fault protection. The proposed ring-based WDM-PON
C. H. Yeh;C.W.Chow;S. P. Huang;J. Y. Sung;Y. L. Liu;C. L. Pan
core   +1 more source