Results 21 to 30 of about 579,349 (293)

Neural Successive Cancellation Polar Decoder With Tanh-Based Modified LLR Over FSO Turbulence Channel

IEEE Photonics Journal, 2020
The neural successive cancellation (NSC) decoder with tanh-based modified log-likelihood ratio (LLR) is proposed for reducing the decoding latency of polar codes over free space optical (FSO) turbulence channel.
Jiafei Fang, Meihua Bi, Shilin Xiao, Hang Yang, Zhiyu Chen, Zhiyang Liu, Weisheng Hu   +6 more
doaj   +1 more source

2-D DOA tracking using variational sparse Bayesian learning embedded with Kalman filter

EURASIP Journal on Advances in Signal Processing, 2018
In this paper, we consider the 2-D direction-of-arrival (DOA) tracking problem. The signals are captured by a uniform spherical array and therefore can be analyzed in the spherical harmonics domain.
Qinghua Huang, Jingbiao Huang, Kai Liu, Yong Fang   +3 more
doaj   +1 more source

Directionally-unbiased unitary optical devices in discrete-time quantum walks [PDF]

, 2019
The optical beam splitter is a widely-used device in photonics-based quantum information processing. Specifically, linear optical networks demand large numbers of beam splitters for unitary matrix realization.
Osawa, Shuto, Sergienko, Alexander V, Simon, David S   +2 more
core   +2 more sources

Fair Resource Allocation Based on User Satisfaction in Multi-OLT Virtual Passive Optical Network

IEEE Access, 2020
In this paper, a fair resource allocation mechanism based on user satisfaction in multiple optical line terminal (multi-OLT) virtual passive optical network (VPON) is proposed.
Nianfei Zhan, Chaoqin Gan, Jianqiang Hui, Yaqin Guo   +3 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

Resolution Enhancement in Coherent Diffraction Imaging Using High Dynamic Range Image

Photonics, 2021
In a coherent diffraction imaging (CDI) system, the information of the sample is retrieved from the diffraction patterns recorded by the image sensor via multiple iterations.
Yuanyuan Liu, Qingwen Liu, Shuangxiang Zhao, Wenchen Sun, Bingxin Xu, Zuyuan He   +5 more
doaj   +1 more source

Interconnection network architectures based on integrated orbital angular momentum emitters [PDF]

, 2018
Novel architectures for two-layer interconnection networks based on concentric OAM emitters are presented. A scalability analysis is done in terms of devices characteristics, power budget and optical signal to noise ratio by exploiting experimentally ...
Bogoni, Antonella, Klitis, Charalambos, Lavery, Martin, Lazzeri, Emma, Malik, Muhammad Nouman, Scaffardi, Mirco, Sorel, Marc, Zhang, Ning   +7 more
core   +2 more sources

Frequency Stabilization of a Cesium Faraday Laser With a Double-Layer Vapor Cell as Frequency Reference

IEEE Photonics Journal, 2022
We implement a compact optical frequency standard at the wavelength of 852 nm by the modulation transfer spectroscopy (MTS) technique, using a Faraday laser as the local oscillator and a double-layer cesium vapor cell to provide frequency reference.
Hangbo Shi, Pengyuan Chang, Zhiyang Wang, Zijie Liu, Tiantian Shi, Jingbiao Chen   +5 more
doaj   +1 more source

Machine learning approach for computing optical properties of a photonic crystal fiber [PDF]

, 2019
Photonic crystal fibers (PCFs) are the specialized optical waveguides that led to many interesting applications ranging from nonlinear optical signal processing to high-power fiber amplifiers.
Aamir Gulistan, Asano, B. M. A. Rahman, Baxter, Benabid, Benabid, Borhani, Cheo, Cucinotta, da Silva Ferreira, De, Holzwarth, Jiang, Johnson, Karanov, Karim, Khan, Knight, Ma, Monro, Musumeci, Nadell, Norton, Obayya, Russell, Shi, Souvik Ghosh, Sunny Chugh, Tittl, Wadsworth, Yu   +30 more
core   +1 more source

Multiple-Ring-Core FM-EDF for Weakly-Coupled MDM Amplification With Low Differential Modal Gain

IEEE Photonics Journal, 2021
Recently weakly-coupled mode-division multiplexing (MDM) transmission systems and networks based on ultralow-modal-crosstalk few-mode fiber (FMF) have attracted much interest, for which optical amplification technologies with low modal crosstalk and two ...
Jinglong Zhu, Mingqing Zuo, Yu Yang, Dawei Ge, Lei Shen, Zhangyuan Chen, Yongqi He, Juhao Li   +7 more
doaj   +1 more source