Results 51 to 60 of about 19,053 (108)

A highly stable atomic vector magnetometer based on free spin precession

, 2015
We present a magnetometer based on optically pumped Cs atoms that measures the magnitude and direction of a 1 $\mu$T magnetic field. Multiple circularly polarized laser beams were used to probe the free spin precession of the Cs atoms.
Afach, S., Ban, G., Bison, G., Bodek, K., Chowdhuri, Z., Grujic, Z. D., Hayen, L., Helaine, V., Kasprzak, M., Kirch, K., Knowles, P., Koch, H. -C., Komposch, S., Kozela, A., Krempel, J., Lauss, B., Lefort, T., Lemiere, Y., Mtchedlishvili, A., Naviliat-Cuncic, O., Piegsa, F. M., Prashanth, P. N., Quemener, G., Rawlik, M., Ries, D., Roccia, S., Rozpedzik, D., Schmidt-Wellenburg, P., Severjins, N., Weis, A., Wursten, E., Wyszynski, G., Zejma, J., Zsigmond, G.   +33 more
core   +3 more sources

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

Controlling single-photon detector ID210 with bright light

, 2019
We experimentally demonstrate that a single-photon detector ID210 commercially available from ID Quantique is vulnerable to blinding and can be fully controlled by bright illumination.
Chistiakov, Vladimir, Egorov, Vladimir, Huang, Anqi, Makarov, Vadim   +3 more
core   +1 more source

Impact of Out-of-Band Noise on OSNR Measurement Using Brillouin Optical Spectrum Analyzer and Its Mitigation Method

IEEE Photonics Journal, 2018
Brillouin optical spectrum analyzer (BOSA) based on stimulated Brillouin scattering (SBS) can provide ultra-high resolution, which in theory can greatly improve the optical signal-to-noise ratio (OSNR) measurement accuracy, especially for systems with ...
Yibo Zhong, Sheng Cui, Changjian Ke, Zhen Guo, Chen Xing, Haoyu Wang, Keyuan Yang, Deming Liu   +7 more
doaj   +1 more source

Multi-impairment and multi-channel optical performance monitoring [PDF]

, 2008
Next generation optical networks will evolve from static to dynamically reconfigurable architectures to meet the increasing bandwidth and service requirements.
Meflah, L.
core  

Optical Performance Monitoring: A Review of Current and Future Technologies

Journal of Lightwave Technology, 2016
Optical performance monitoring (OPM) is the estimation and acquisition of different physical parameters of transmitted signals and various components of an optical network.
Zhenhua Dong, F. Khan, Qi Sui, K. Zhong, Chao Lu, A. Lau   +5 more
semanticscholar   +1 more source

Multi-task deep neural network (MT-DNN) enabled optical performance monitoring from directly detected PDM-QAM signals.

Optics Express, 2019
We experimentally demonstrate a multi-task deep neutral network (MT-DNN) enabled optical performance monitoring (OPM) for PDM-QPSK/8QAM/16QAM signals, by using the asynchronous amplitude histogram (AAH) after the direct detection.
Yijun Cheng, S. Fu, M. Tang, Deming Liu
semanticscholar   +1 more source

Reservoir Computing for Few-Mode Fiber Channel OSNR Monitoring in Deep Learning Frameworks

IEEE Photonics Journal
This paper presents a novel optical performance monitoring (OPM) scheme based on reservoir computing (RC) and Resnet network for monitoring the optical signal-to-noise ratio (OSNR) of few-mode transmission channels, without the need for any demodulation ...
Jianjun Li, Tianfeng Zhao, Baojian Wu, Kun Qiu, Feng Wen   +4 more
doaj   +1 more source

Photonic chip based transmitter optimization and receiver demultiplexing of a 1.28 Tbit/s OTDM signal [PDF]

, 2010
We demonstrate chip-based Tbaud optical signal processing for all-optical performance monitoring, switching and demultiplexing based on the instantaneous Kerr nonlinearity in a dispersion-engineered As 2S 3 planar waveguide.
B. J. Eggleton, B. Luther-Davies, Choi, D. A. P. Bulla, D.-Y. Choi, Dorrer, E. Palushani, Ellis, Fu, Galili, H. Hu, Hansen Mulvad, Hansryd, Inoue, J. Schröder, J. Xu, L. K. Oxenløwe, Li, M. D. Pelusi, M. Galili, Madden, Manning, Matsumoto, Mulvad, Nakazawa, Nakazawa, Oxenlwe, Pelusi, Pelusi, Pelusi, Pelusi, Prasad, S. J. Madden, Shani, Shoji, Song, T. D. Vo, Tangdiongga, Tao, Vo, Weber, Zhou   +41 more
core   +1 more source

Network-wide localization of optical-layer attacks [PDF]

, 2020
Optical networks are vulnerable to a range of attacks targeting service disruption at the physical layer, such as the insertion of harmful signals that can propagate through the network and affect co-propagating channels.
B Wu, C Mas, J Tapolcai, ML Ali, N Skorin-Kapov, P Babarczi, R Rejeb, T Uematsu, T Wu, Y Wen   +9 more
core   +1 more source