Results 231 to 240 of about 10,164 (270)
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OSNR sensitivity of multi-level modulation formats
SPIE Proceedings, 2010A simple analytical method to estimate the OSNR sensitivity of multi-level amplitude, phase and combined modulation formats is shown. Results are verified by numerical simulations.
Michael Eiselt +2 more
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Joint OSNR and Frequency Offset Estimation Using Signal Spectrum Correlations
Journal of Lightwave Technology, 2021We propose an efficient and modulation-format-transparent method to jointly estimate optical signal-to-noise ratio (OSNR) and frequency offset (FO) by using signal spectrum correlations for coherent optical fiber communication systems.
Jing Zhou, Jianing Lu, Gai Zhou, Chao Lu
semanticscholar +1 more source
The PMD effect in OSNR monitoring
Microwave and Optical Technology Letters, 2005AbstractPolarization‐mode dispersion (PMD) effect on monitoring optical signal‐to‐noise ratio (OSNR) by polarization‐nulling technique has been investigated. Without PMD, the maximum and minimum optical power is measured using the polarization‐nulling method to provide accurate OSNR.
Sun, F. G. +3 more
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OSNR monitoring based on the correction to the error of OSNR for coherent optical systems
SPIE Proceedings, 2015We propose a novel method for optical signal-to-noise ratio (OSNR) monitoring by the correction to the error of OSNR in high speed coherent optical communication systems. We calculate the total power and the total noise power by the real and imaginary part of the coherent detection signal.
Jingyue Xu, Aiying Yang, Lihui Feng
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2015 17th International Conference on Transparent Optical Networks (ICTON), 2015
We discuss the performance of OSNR system margin and OSNR system penalty monitoring techniques based on the use of an optical coherent receiver. For a 120 Gb/s DP-QPSK transmission system, we demonstrate that we can use the overall link impairment level parameter as a measure of the OSNR system penalty regardless the type of the link impairment as long
David Dahan, Uri Mahlab
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We discuss the performance of OSNR system margin and OSNR system penalty monitoring techniques based on the use of an optical coherent receiver. For a 120 Gb/s DP-QPSK transmission system, we demonstrate that we can use the overall link impairment level parameter as a measure of the OSNR system penalty regardless the type of the link impairment as long
David Dahan, Uri Mahlab
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Journal of Lightwave Technology, 2020
We propose and experimentally demonstrate a method of optical signal-to-noise ratio (OSNR) monitoring and modulation format identification (MFI) using a binarized convolutional neural network (B-CNN) in coherent receiver.
Yilun Zhao +6 more
semanticscholar +1 more source
We propose and experimentally demonstrate a method of optical signal-to-noise ratio (OSNR) monitoring and modulation format identification (MFI) using a binarized convolutional neural network (B-CNN) in coherent receiver.
Yilun Zhao +6 more
semanticscholar +1 more source
Accurate OSNR monitoring based on data-augmentation-assisted DNN with a small-scale dataset.
Optics Letters, 2021Deep neural networks (DNNs) have been successfully applied for accurate optical signal-to-noise ratio (OSNR) monitoring. However, the performance of OSNR monitoring substantially degrades when a mega dataset is inaccessible.
Weiwei Zhao +5 more
semanticscholar +1 more source
An Accurate Nonlinear Noise Insensitive OSNR Monitor
Optical Fiber Communication Conference, 2016We propose a new design for pilot based OSNR monitor with XPM noise exclusion at the receiver side. High accuracy and low nonlinear sensitivity (
Liang Dou +7 more
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OSNR monitoring technique using polarization-nulling method
IEEE Photonics Technology Letters, 2001We report on the simple technique for monitoring the optical signal-to-noise ratios (OSNRs) of wavelength-division-multiplexed (WDM) signals. This technique, based on the polarization-nulling method, was implemented simply by using a rotating quarter-wave plate and rotating linear polarizer.
Lee, JH +3 more
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Estimating System OSNR With a Digital Coherent Transceiver
IEEE Photonics Technology Letters, 2021We demonstrate a technique of evaluating optical signal to noise ratio (OSNR) associated with an optical carrier in a fiber-optic system using a commercial coherent optical transceiver equipped with digital signal processing capability. The procedure of measuring noises caused by the transmitter and the receiver is outlined, and these transceiver ...
Rongqing Hui +3 more
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