Results 311 to 320 of about 1,237,729 (356)

Progresses of Pilot Tone Based Optical Performance Monitoring in Coherent Systems

Journal of Lightwave Technology, 2022
Pilot tone (PT) is a low frequency, small intensity modulation applied to high speed optical channel. Traditionally PT is used for channel identification and channel power monitoring.
Zhiping Jiang, Xuefeng Tang, Simin Wang, Ge Gao, Dajiang Jin, Jianfeng Wang, Minggang Si   +6 more
semanticscholar   +1 more source

Cost-Effective Multi-Parameter Optical Performance Monitoring Using Multi-Task Deep Learning With Adaptive ADTP and AAH

Journal of Lightwave Technology, 2021
A cost-effective optical performance monitoring (OPM) scheme is proposed to realize modulation format identification (MFI), baud rate identification (BRI), chromatic dispersion identification (CDI), and optical signal-to-noise ratio (OSNR) estimation of ...
Huaijian Luo, Zhuili Huang, Xiong Wu, Changyuan Yu   +3 more
semanticscholar   +1 more source

Optical Performance monitoring using Q-learning optimized least square support vector machine in optical network

IEEE International Conference on Signal and Image Processing, 2021
Optical performance monitoring (OPM) is one of the important technologies to ensure the normal transmission of optical network data. Although there are many techniques have been applied to OPM, it is still necessary to improve its monitoring performance ...
Qiang Sun, Zhuojia Yang, Xiaodong Chen, Chengqing Yu   +3 more
semanticscholar   +1 more source

Optical Processing for Performance Monitoring

Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, 2011
We review recent experiments of waveform spectrum analysis by the nonlinear Kerr effect, and its application to multi-impairment monitoring of optical signals. The measurement of 640 Gb/s signals via nonlinear fibers and planar waveguides is compared.
Trung D. Vo, Benjamin J. Eggleton, Mark Pelusi   +2 more
openaire   +2 more sources

Optical domain performance monitoring

Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079), 2002
The rapid evolution of terrestrial optical networks is driving the need for optical domain performance monitoring in order to provide the lowest transport cost per managed bit. This paper presents various techniques for monitoring optical signals between 3R interfaces in terms of their economic value to the network operator.
A. Solheim, James Harley, Kim B. Roberts, R. Habel   +3 more
openaire   +2 more sources

Optical Performance Monitoring for Flexible Optical Networks [PDF]

Advanced Photonics for Communications, 2014
Optical performance monitoring for optical OFDM signals in flexible optical networks, including optical signal-to-noise-ratio monitoring, chromatic dispersion monitoring and polarization mode dispersion monitoring, will be discussed.
openaire   +1 more source

Toward Universal Optical Performance Monitoring for Intelligent Optical Fiber Communication Networks

IEEE Communications Magazine, 2020
Optical performance monitoring (OPM) plays an essential role in the intelligent optical fiber communication networks, which perform dynamic network planning and service deployment based on the knowledge of the real-time conditions of the optical layer ...
Dawei Wang, Qi Sui, Zhaohui Li
semanticscholar   +1 more source

Performance degradations and monitoring in optical networks

SPIE Proceedings, 2004
nonlinearities [1]. Typically, systems are designed such that these degrading effects are eitherminimized or compensated (e.g., using compensation fibers and devices). It has been widelyrecognized that as domains of transparency get larger, data rates of 10 Gb/s and higher becomemore common, and channel spacings are reduced, physical impairments will ...
Q. Yu, Zhongqi Pan, Alan E. Willner, S.M. Reza Motaghian Nezam   +3 more
openaire   +2 more sources

Performance Monitoring in Optical OFDM Systems

Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, 2009
We investigate performance monitoring within coherent optical OFDM systems. Estimates for CD and instantaneous DGD can be extracted from the result of channel estimation. The method can also provide information about OSNR and non-linear distortion.
Markus Mayrock, Herbert Haunstein
openaire   +2 more sources

Monitoring the performance of a semiconductor optical amplifier

Applied Physics Letters, 1990
Measurements of optical gain and spontaneous emission of optical amplifiers show that the latter is a good measure of the former. A device structure is fabricated where a photodetector is integrated next to the amplifier. A fraction of the spontaneous emission from the amplifier impinges on the photodetector in this device producing a photocurrent. The
M. S. Lin, A. B. Piccirilli, T. R. Halemane, Niloy K. Dutta   +3 more
openaire   +2 more sources