Results 11 to 20 of about 197,759 (301)

High Throughput Priority-Based Layered QC-LDPC Decoder with Double Update Queues for Mitigating Pipeline Conflicts

Sensors, 2022
A high-throughput layered decoder for quasi-cyclic (QC) low-density parity-check (LDPC) codes is required for communication systems. The preferred way to improve the throughput is to insert pipeline stages and increase the operating frequency, which ...
Yunfeng Li, Yingchun Li, Nan Ye, Tianyang Chen, Zhijie Wang, Junjie Zhang   +5 more
doaj   +1 more source

Flexible Multi-Thread Dynamic Bandwidth Allocation Algorithm in VPONs Based on LR WDM/TDM PON

IEEE Access, 2020
With the smooth upgrade of the access network, multiple tuning-time devices will coexist in the long-reach access network, and the subsequent problems of high round-trip time (RTT) and optical network unit (ONU) tuning delay need to be solved urgently ...
Lijuan Wu, Chaoqin Gan, Xingdi Wang, Zhongsen Xu, Jianqiang Hui   +4 more
doaj   +1 more source

An LDPC Encoder Architecture With Up to 47.5 Gbps Throughput for DVB-S2/S2X Standards

IEEE Access, 2022
Low-Density Parity-Check (LDPC) code is a type of forward error-correction code with excellent performance, and has been widely used in many modern communication standards. The second-generation satellite broadcasting standard (DVB-S2) and its extension (
Decai Liu, Yanfei Luo, Yunfeng Li, Zhijie Wang, Zhengxuan Li, Qianwu Zhang, Junjie Zhang, Yingchun Li   +7 more
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Low-Complexity Sampling Frequency Offset Estimation and Compensation Scheme for OFDM-Based UWOC System

Photonics, 2022
In this paper, a simple sampling frequency offset (SFO) estimation and compensation scheme based on two phase-conjugated pilots is proposed and experimentally demonstrated in an OFDM-based underwater wireless optical communication (UWOC) system.
Hu Li, Tianyang Chen, Zhijie Wang, Bingyao Cao, Yingchun Li, Junjie Zhang   +5 more
doaj   +1 more source

Detection of nanometer-scale diameter changes in optical fibers with forward stimulated Brillouin scattering [PDF]

EPJ Web of Conferences
We investigate the potential of forward-stimulated Brillouin scattering in optical fibers to detect changes of the fiber diameter with nanometer resolution.
Álvarez-Ocampo C., Delgado-Pinar M., Díez A., Cruz J. L., Andrés M. V.   +4 more
doaj   +1 more source

Bragg gratings and BIO-Bragg-gratings in tapered optical fibers [PDF]

EPJ Web of Conferences, 2022
Tapered optical fibres are well-established devices for different applications, in order to exploit nonlinear effects, manage dispersion, excite azimuthal resonances in microresonators (so-called Whispering Gallery Modes).
Delgado-Pinar Martina, Díez Antonio, Cruz Jose Luis, Andrés Miguel V.   +3 more
doaj   +1 more source

Linear and nonlinear optical properties of carbon nanotube-coated single-mode optical fiber gratings [PDF]

, 2011
This paper was published in OPTICS LETTERS and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.36.002104.
Benoit Simard, Chan, Choi, Chow, Chow, Chow, Claudio J. Oton, Guillermo E. Villanueva, Jacques Albert, Jakubinek, Joaquín Matres, Kingston, Li-Yang Shao, Michael B. Jakubinek, Pere Pérez-Millán, Sakakibara, Set, Vallaitis   +17 more
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3 W average-power high-order mode pulse in dissipative soliton resonance mode-locked fiber laser

Nanophotonics, 2021
Recently high-order modes (HOMs) lasers have been extensively investigated due to their potential applications in mode-division multiplexing. In this paper, we present two schemes of generating HOMs from the mode-locked fiber lasers (MLFLs) in the ...
Wang Longtao, Xu Jiangtao, Lu Jiafeng, Teng Linping, Luo Zhengqian, Pang Fufei, Zeng Xianglong   +6 more
doaj   +1 more source

An Improved End-to-End Autoencoder Based on Reinforcement Learning by Using Decision Tree for Optical Transceivers

Micromachines, 2021
In this paper, an improved end-to-end autoencoder based on reinforcement learning by using Decision Tree for optical transceivers is proposed and experimentally demonstrated.
Qianwu Zhang, Zicong Wang, Shuaihang Duan, Bingyao Cao, Yating Wu, Jian Chen, Hongbo Zhang, Min Wang   +7 more
doaj   +1 more source

Seven-Ring-Core Erbium-Doped Fiber for OAM-MDM Amplification

IEEE Photonics Journal, 2023
Orbital angular momentum (OAM) mode division multiplexing (MDM) amplification in a seven-ring-core erbium-doped fiber (7-RC-EDF) has been experimentally demonstrated, in which the 1st–4th order OAM modes within each core of the 7-RC-EDF can be ...
Qi Jiang, Xiaobo Xue, Fufei Pang, Liang Zhang, Mengshi Zhu, Heiming Wei, Cheng Du, Wei Li, Tingyun Wang   +8 more
doaj   +1 more source