Results 31 to 40 of about 387 (134)

Procedure to optimize the intercarrier spacing in superchannels impaired by the cascading of WSS-based ROADMs [PDF]

EPJ Web of Conferences, 2020
A new procedure is proposed to optimize the intercarrier spacing and wavelength selective switch (WSS) bandwidth for superchannels, using a Monte Carlo simulation.
Pereira Paulo J., Rebola João L., Cancela Luís G.   +2 more
doaj   +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

Periodic Training Sequence Aided In-Band OSNR Monitoring in Digital Coherent Receiver

IEEE Photonics Journal, 2014
We propose and demonstrate a new data-aided in-band optical-signal-to-noise ratio (OSNR) monitoring method, which employs the periodic property of a specially designed short training sequence to differentiate the signal power from noise and is proved to ...
Donghe Zhao, Lixia Xi, Xianfeng Tang, Wenbo Zhang, Yaojun Qiao, Xiaoguang Zhang   +5 more
doaj   +1 more source

Extended Worst-Case OSNR Searching Algorithm for Optical Network-on-Chip Using a Semi-Greedy Heuristic With Adaptive Scan Range

IEEE Access, 2020
The advances in silicon photonics technology have facilitated the realization of optical network-on-chips (ONoCs) to cope with the physical limitations of metal interconnections in traditional CMOS integrated circuits.
Yong Wook Kim, Jae Hoon Lee, Tae Hee Han
doaj   +1 more source

Advances in Mode (De)Multiplexing Technologies via Circularly Symmetric Structured Light Beams

Advanced Photonics Research, Volume 6, Issue 10, October 2025.
This review presents a comprehensive overview of mode (de)multiplexing technologies using circularly symmetric structured light beams, encompassing strategies of beam splitter combinations, multiorder diffractive gratings, optical coordinate transformations, angular dispersion lenses, multilayer cascaded modulations, and multidimensional hybrid (de ...
Qingji Zeng, Shu Chen, Zhibin Wu, Junmin Liu, Huapeng Ye, Gaiqing Zhao, Dianyuan Fan, Shuqing Chen   +7 more
wiley   +1 more source

A Joint OSNR and Nonlinear Distortions Estimation Method for Optical Fiber Transmission System

IEEE Photonics Journal, 2018
In this paper, we propose and demonstrate a joint optical signal-to-noise ratio (OSNR) and a nonlinear distortions estimation method. The OSNR is calculated by considering either the link parameters or the correlation operations of the training symbols ...
Yating Xiang, Ming Tang, Qiong Wu, Huibin Zhou, Bo Yong, Songnian Fu, Deming Liu   +6 more
doaj   +1 more source

Deep neural network-based joint monitoring of carrier-to-signal power ratio (CSPR) and optical signal-to-noise ratio (OSNR) for directly detected optical single-sideband transmission

Optics Express
Optical single-sideband (SSB) transmission enhances spectral efficiency and mitigates transmission reach limitations caused by chromatic dispersion (CD), making it ideal for cost-effective data-center interconnects. This paper proposes and demonstrates deep neural network (DNN)-enabled optical performance monitoring (OPM) for optical SSB transmissions.
Zhaoying Chen, Junjiang Xiang, Meng Xiang, Songnian Fu, Yuwen Qin   +4 more
openaire   +1 more source

Experimental Evaluation of Impairments in Unrepeatered DP-16QAM Link with Distributed Raman Amplification

Photonics, 2017
The transmission impairments of a Raman amplified link using dual-polarization 16-quadrature amplitude modulation (DP-16QAM) are experimentally characterized.
Xiaodan Pang, Oskars Ozolins, Atalla El-Taher, Richard Schatz, Gunnar Jacobsen, Sergey Sergeyev, Sergei Popov   +6 more
doaj   +1 more source

Programmable Dual‐Wavelength Switchable All‐fiber Laser via Hybrid Optical Amplifier in the NIR‐III Region for Multi‐Contrast Photoacoustic Microscopy

Laser &Photonics Reviews, Volume 19, Issue 13, July 8, 2025.
A novel dual‐wavelength switchable all‐fiber laser operating in the NIR‐III region, utilizing a hybrid optical amplifier, is presented. This laser generates high power‐spectral‐density pulses with flexible pulse widths and high switching frequencies, enabling efficient multi‐contrast photoacoustic microscopy for the detection of microplastics in ...
Yitian Tong, Huajun Tang, Jixiang Chen, Najia Sharmin, Jinge Wei, Kevin K. Tsia, Kenneth K. Y. Wong   +6 more
wiley   +1 more source

Performance Analysis of Microwave Photonic Spectral Filters based on Optical Microcombs

Advanced Physics Research, Volume 4, Issue 1, January 2025.
A comprehensive analysis of microcomb‐based microwave spectral filters based on the transversal filter approach is presented. Theoretical limitations in the filter spectral response from finite tap numbers, experimental errors, and the influence of the input signal's bandwidth are all analyzed.
Yang Li, Yang Sun, Jiayang Wu, Guanghui Ren, Xingyuan Xu, Bill Corcoran, Sai Tak Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss   +10 more
wiley   +1 more source