Results 11 to 20 of about 96 (95)

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

IEEE 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, Wei Li, Qiang Zheng, Jinyao Wang, Haitao Li, Qianggao Hu, Shaohua Yu   +6 more
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Intensification of noise tolerance against Rayleigh backscattering for bidirectional 10 Gbps WDM-FSO network by employing dual band of OFDM signal

Results 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, Khaleda Mallick, Bubai Dutta, Bibhatsu Kuiri, Saikat Santra, Nilanjana Sarkar, Ardhendu Sekhar Patra   +6 more
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Performance Enhancement and Capacity Enlargement for a DWDM-PON System Utilizing an Optimized Cross Seeding Rayleigh Backscattering Design

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

IEEE 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, Wei Ji, Rui Yin, Jingyao Li, Zisu Gong, Hao Yun   +5 more
doaj   +1 more source

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

IEEE 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, Jhao-Ren Chen, Wei-Yao You, Wen-Piao Lin, Chi-Wai Chow   +4 more
doaj   +1 more source

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

Photonics, 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, Syu-Yang Jiang, Shang-En Hsieh, Chien-Hung Yeh, Yu-Ting Lai, Lan-Yin Chen, Shien-Kuei Liaw, Chi-Wai Chow   +7 more
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25-GHz-Spaced DWDM-PON With Mitigated Rayleigh Backscattering and Back-Reflection Effects

IEEE 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, Shilin Xiao, Tao Qi, Pingqing Li, Meihua Bi, Weisheng Hu   +5 more
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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
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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
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Stable and Tunable Erbium Ring Laser by Rayleigh Backscattering Feedback and Saturable Absorber for Single-Mode Operation

Quantum Beam Science
This work demonstrates a high-quality erbium-doped fiber (EDF) ring laser in the L-band gain range by combining the Rayleigh backscattering (RB) feedback signal and unpumped EDF induced saturable absorber (SA) filter. The optical filter effect induced by
Chien-Yu Liao, Yu-Hsin Kao, Ying-Zhen Chen, Kuan-Ming Cheng, Chun-Yen Lin, Tsu-Hsin Wu, Teng-Yao Yang, Chien-Hung Yeh   +7 more
doaj   +1 more source