Results 81 to 90 of about 5,993 (258)
Photonics, 2022 Real-time optical performance monitoring (OPM) is of the utmost importance in adaptive optical networks to enable awareness of channel conditions and to achieve high quality of service.
Waddah S. Saif +4 more
doaj +1 more source
Constellation Shaping for WDM systems using 256QAM/1024QAM with Probabilistic Optimization [PDF]
, 2016 In this paper, probabilistic shaping is numerically and experimentally investigated for increasing the transmission reach of wavelength division multiplexed (WDM) optical communication system employing quadrature amplitude modulation (QAM).
Da Ros, Francesco +7 more
core +2 more sources
Watt-level ultrahigh-OSNR single-longitudinal-mode tunable Brillouin fiber laser [PDF]
, 2012 A watt-level ultrahigh optical signal-to-noise ratio (OSNR) single-longitudinal-mode (SLM) tunable Brillouin fiber laser (BFL) has been demonstrated.By optimizing the length of the single mode fiber (SMF) cavity at 11m and its output ratio at sixty percent, 1.04 W output power, as well as stable SLM operation is obtained at 2.24 W pump power.
arxiv +1 more source
IET Optoelectronics, Volume 18, Issue 6, Page 179-187, December 2024.Multicore (MC‐) erbium‐doped fibre amplifier (EDFA) architecture is classified from the viewpoint of the number of erbium‐doped fibre (EDF) cores and its pumping method. In particular, the advantages of cladding pumped MC‐EDFA are shown. Abstract Amplification technologies needed for spatial division multiplexing (SDM) signal transmission have been ...
Hitoshi Takeshita
wiley +1 more source
Recognition and evaluation of constellation diagram using deep learning based on underwater wireless optical communication [PDF]
arXiv, 2020 Abstract. In this paper, we proposed a method of constellation diagram recognition and evaluation using deep learning based on underwater wireless optical communication (UWOC). More specifically, an constellation diagram analyzer for UWOC system based on convolutional neural network (CNN) is designed for modulation format recognition (MFR), optical ...
arxiv
Comparison of Single-Wavelength and Multi-Wavelength Transponders in a Physical-layer-aware Network Planning Study [PDF]
European Conference on Optical Communication (ECOC) 2022, 2023 Based on suitable system architectures and realistic specifications, transmit OSNR penalties and spectral constraints of multi-wavelength transponders are identified and analyzed in a network study. We report up to 70% less required lasers at the expense of a slight increase in number of lightpaths.
arxiv
IET Optoelectronics, Volume 18, Issue 5, Page 131-139, October 2024.1. The data‐free guided coherent reception DSP algorithm proposed based on spectral clustering can effectively suppress a variety of physical damage and increase the system’s OSNR tolerance. 2. When the bit error rate is 1.9E‐2, the spectral clustering‐based data‐agnostic DSP solution extends the maximum transmission distance of a 14GBaud PM‐16QAM ...
Jianhua He +3 more
wiley +1 more source
IEEE AccessIn this study, we develop an intelligent constellation diagram monitoring method for fiber optic communications based on a small sample learning network. The method is designed to identify the modulation format, estimate the optical signal-to-noise ratio
Yiming Wu
doaj +1 more source
Optical Wireless Performance Monitoring Using Asynchronous Amplitude Histograms
IEEE Photonics Journal, 2021 Optical performance monitoring (OPM) aims to estimate the amount of distortion in optical networks. Its importance relies on building robust and efficient networks with self and dynamic diagnosis.
Maged Abdullah Esmail
doaj +1 more source
Pump Linewidth Requirements for Processing Dispersion-Altered DQPSK Signals using FWM [PDF]
, 2015 We report on a potentially deleterious issue regarding the four-wave mixing based processing of dispersion-altered signals. We estimate the baudrate-dependent pump linewidth tolerances by calculating the extra optical signal to noise ratio (OSNR) penalty with respect to the propagation distance.
arxiv +1 more source