Results 251 to 260 of about 10,164 (270)

A Distributed Optimization Approach to Constrained OSNR Problem

IFAC Proceedings Volumes, 2008
Abstract This paper studies constrained optical signal-to-noise ratio (OSNR) problem via a distributed optimization approach. In multi-channel optical systems, the signal over an optical link can be regarded as an interfering noise for others, which leads to OSNR degradation.
Yan Pan, Tansu Alpcan, Lacra Pavel
openaire   +1 more source

Multiple-Channel OSNR Monitoring With a Single Detector

IEEE Photonics Technology Letters, 2004
We report a multichannel optical signal-to-noise ratio (OSNR) monitoring method using the integrated planar lightwave circuit and fast Fourier transform techniques with a single detector. The OSNR of four-channel wavelength-division-multiplexing signals can be monitored for a dynamic range of 20 dB with an accuracy of /spl plusmn/1 dB.
X. Lin, L. Yan
openaire   +1 more source

Long Short-Term Memory Neural Network (LSTM-NN) Enabled Accurate Optical Signal-to-Noise Ratio (OSNR) Monitoring

Journal of Lightwave Technology, 2019
Optical signal-to-noise ratio (OSNR) monitoring is essential to both the operation of reliable and reconfigurable network and the supply of high quality-of-service.
Chunxiao Wang, S. Fu, Zhuopeng Xiao, M. Tang, Deming Liu   +4 more
semanticscholar   +1 more source

Cost effective OSNR monitor using LC phase shifter

OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference, 2008
We have demonstrated an improved optical signal to noise ratio (OSNR) monitor using liquid-crystal (LC) cell phase shifter. The test results show it is a cost effective and practical way to OSNR monitoring.
J.J. Pan, William Jing, Minjie Zhang, James Pang, Z.G. Huang   +4 more
openaire   +1 more source

Convolutional Recurrent Machine Learning for OSNR and Launch Power Estimation: A Critical Assessment

Optical Fiber Communications Conference and Exhibition, 2020
Using waveforms from three distinct stages of signal demodulation, we assess performance, computational efficiency, and benefits of using convolutional recurrent neural networks to simultaneously and independently estimate OSNR and launch power within a ...
Hyung Joon Cho, Siddharth J. Varughese, D. Lippiatt, S. Ralph   +3 more
semanticscholar   +1 more source

Performance measurement and analysis in WDM Networks effects on OSNR

2017 4th International Conference on Electrical and Electronic Engineering (ICEEE), 2017
In this paper, 400 Gbps Tests - which take place in ITU's Roadmap of 2018 and have been never tried on a live network, according to literature review- are applied to Turk Telekom Live Network, within a distance of 1060/2120 kilometers (between Istanbul and Ankara, round-trip/between Istanbul - Ankara, twice round-trip) and changes on Optical Signal-to ...
Osmanca, M. Serdar, Alparslan, Hasan, YÜCEL, MURAT   +2 more
openaire   +2 more sources

A Non-Data-Aided OSNR Estimation Algorithm for Coherent Optical Fiber Communication Systems Employing Multilevel Constellations

Journal of Lightwave Technology, 2019
The performance of existing moments-based non-data-aided (NDA) optical signal-to-noise ratio (OSNR) estimation approaches degrades greatly for coherent optical systems employing multilevel constellations. We propose a novel NDA OSNR estimation algorithm,
Xiang Lin, O. Dobre, T. Ngatched, Cheng Li   +3 more
semanticscholar   +1 more source

State Based OSNR Estimation in Amplitude Sampling Receivers

2006 European Conference on Optical Communications, 2006
We present a state based OSNR estimation, which enables electrical receivers to monitor in-channel optical noise. The estimation is independent from the sampling instant as well as from signal distortions.
F. N. Hauske, B. Lankl, C. Xie, E.-D. Schmidt   +3 more
openaire   +1 more source

Novel technique for simultaneous channel and OSNR monitoring

OFC 2003 Optical Fiber Communications Conference, 2003., 2003
A compact module including a polarization sensitive EO modulator and a LED sensor is utilized for OSNR monitoring and channel recognition. The modulator acts as a polarizer and provides signal dithering to improve the detection sensitivity.
C. Yang, S. Lee
openaire   +1 more source

Eye Diagram Measurement-Based Joint Modulation Format, OSNR, ROF, and Skew Monitoring of Coherent Channel Using Deep Learning

Journal of Lightwave Technology, 2019
In this work, deep learning is used to monitor coherent channel performance with eye diagram measurement. Experiments show that the proposed technique can determine the modulation format, optical signal to noise ratio (OSNR), roll-off factor (ROF), and ...
Yiwen Zhang, Z. Pan, Y. Yue, Yongxiong Ren, Zhi Wang, Bo Liu, Hao Zhang, Si-Ao Li, Yuxi Fang, Hao Huang, C. Bao   +10 more
semanticscholar   +1 more source