Results 61 to 70 of about 204 (73)

Design and performance evaluation of PEA IP over DWDM core networks

Engineering and Applied Science Research, 2019
This work demonstrates the design and performance evaluation of an IP over DWDM Network of the PEA (Provincial Electricity Authority) in the stage of the transforming from a conventional network to a full DWDM.
Chaowarit Boonta, Prasit Nakornrat, Nakrop Jinaporn   +2 more
doaj   +1 more source

Monitoring of OSNR Using an Improved Binary Particle Swarm Optimization and Deep Neural Network in Coherent Optical Systems

Photonics, 2019
A novel technique is proposed to implement optical signal-to-noise ratio (OSNR) estimation by using an improved binary particle swarm optimization (IBPSO) and deep neural network (DNN) based on amplitude histograms (AHs) of signals obtained after ...
Xiaoyong Sun, Shaojing Su, Junyu Wei, Xiaojun Guo, Xiaopeng Tan   +4 more
doaj   +1 more source

Experimental Demonstration of 1.2-Tb/s Optical PDM SCFDM Superchannel Multicasting by HNLF

IEEE Photonics Journal, 2013
Threefold 1.2-Tb/s optical polarization-division-multiplexing (PDM) single-carrier frequency-division-multiplexing (SCFDM) and orthogonal-frequency-division-multiplexing (OFDM) superchannel multicasting, utilizing multiple-pump four-wave mixing (FWM) by ...
Yuanxiang Chen, Juhao Li, Paikun Zhu, Yingying Xu, Yongqi He, Zhangyuan Chen   +5 more
doaj   +1 more source

Estimation Uncertainties in the Optical Signal-to-Noise Ratio Network Optimization

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this work, we investigate the effects of estimation uncertainties in the optimization of the optical signal-to-noise ratio (OSNR) at the wavelength division multiplexing (WDM) optical networks.
Fábio R. Durand, Guilhereme M. Lopes, Amanda Spagolla, Taufik Abrão   +3 more
doaj   +1 more source

Data-Aided OSNR Estimation for QPSK and 16-QAM Coherent Optical System

IEEE Photonics Journal, 2013
We propose an optical signal-to-noise ratio (OSNR) estimation technique using self-equalized complementary Golay sequences for both QPSK and 16-QAM coherent optical systems. The training sequences have complementary spectra, which enable accurate channel
C. Do, A. V. Tran, C. Zhu, D. Hewitt, E. Skafidas   +4 more
doaj   +1 more source

Minimizing the Number of Spans for Terrestrial Fiber-Optic Systems Using Quasi-Single-Mode Transmission

IEEE Photonics Journal, 2018
We show that quasi-single-mode transmission in few-mode fibers (FMFs) can reduce the number of spans for a fixed transmission distance and, consequently, the cost per bit for terrestrial transmission systems by minimizing both the Capex and Opex.
Jian Zhao, Inwoong Kim, Olga Vassilieva, Tadashi Ikeuchi, Wei Wang, He Wen, Guifang Li   +6 more
doaj   +1 more source

Low-Loss Optical Nyquist Pulse Train Generation Using Nonauxiliary Wavelength Selective Switch in Communication Band

IEEE Photonics Journal, 2019
We report low-loss optical Nyquist pulse train generation using a non-auxiliary wavelength selective switch (WSS). The typical approach for optical Nyquist pulse train generation involves two procedures.
Koji Takahashi, Yu Yamasaki, Takashi Inoue, Tsuyoshi Konishi   +3 more
doaj   +1 more source

Modulation Format Identification in Mode Division Multiplexed Optical Networks

IEEE Access, 2019
In this paper, we address the problem of modulation format identification (MFI) for few mode fiber (FMF) transmission in elastic optical networks (EONs).
Waddah S. Saif, Amr M. Ragheb, Hussein E. Seleem, Tariq A. Alshawi, Saleh A. Alshebeili   +4 more
doaj   +1 more source

Stable Single-Longitudinal-Mode Fiber Laser With Ultra-Narrow Linewidth Based on Convex-Shaped Fiber Ring and Sagnac Loop

IEEE Access, 2019
In this investigation, a convex-shaped fiber ring (CSFR)-based single-longitudinal-mode (SLM) erbium-doped fiber laser (EDFL) is proposed and experimentally verified. The CSFR, composed of only two optical couplers and forming a double-ring architecture,
Zhengkang Wang, Jianming Shang, Kuanlin Mu, Song Yu, Yaojun Qiao   +4 more
doaj   +1 more source

An OSNR Monitoring Scheme based on Mean and Variance Value of Signal Amplitude

Guangtongxin yanjiu
【Objective】Optical Signal-to-Noise Ratio (OSNR) is an important criterion for evaluating the performance of communication systems. For optical fiber communication systems, stable operation can only be ensured if the OSNR at the receiver end exceeds the ...
CHEN Fang, LI Zifan, ZHU Yanyuan, LI Bozhong, LONG Han, WU Jianjun, DUAN Mingxiong   +6 more
doaj