Results 61 to 70 of about 387 (134)

Estimation Uncertainties in the Optical Signal-to-Noise Ratio Network Optimization

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
In this work, we investigate the effects of estimation uncertainties in the optimization of the optical signal-to-noise ratio (OSNR) at the wavelength division multiplexing (WDM) optical networks.
Fábio R. Durand   +3 more
doaj   +1 more source

Experimental Demonstration of 1.2-Tb/s Optical PDM SCFDM Superchannel Multicasting by HNLF

open access: yesIEEE Photonics Journal, 2013
Threefold 1.2-Tb/s optical polarization-division-multiplexing (PDM) single-carrier frequency-division-multiplexing (SCFDM) and orthogonal-frequency-division-multiplexing (OFDM) superchannel multicasting, utilizing multiple-pump four-wave mixing (FWM) by ...
Yuanxiang Chen   +5 more
doaj   +1 more source

Data-Aided OSNR Estimation for QPSK and 16-QAM Coherent Optical System

open access: yesIEEE Photonics Journal, 2013
We propose an optical signal-to-noise ratio (OSNR) estimation technique using self-equalized complementary Golay sequences for both QPSK and 16-QAM coherent optical systems. The training sequences have complementary spectra, which enable accurate channel
C. Do   +4 more
doaj   +1 more source

Minimizing the Number of Spans for Terrestrial Fiber-Optic Systems Using Quasi-Single-Mode Transmission

open access: yesIEEE Photonics Journal, 2018
We show that quasi-single-mode transmission in few-mode fibers (FMFs) can reduce the number of spans for a fixed transmission distance and, consequently, the cost per bit for terrestrial transmission systems by minimizing both the Capex and Opex.
Jian Zhao   +6 more
doaj   +1 more source

QPSK Training Sequence-Based Both OSNR and Chromatic Dispersion Monitoring in DWDM Systems

open access: yesIEEE Photonics Journal, 2018
We design a quadrature phase-shift keying training sequence (QPSK-TS) for monitoring both optical signal-to-noise ratio (OSNR) and chromatic dispersion (CD) in a dense wavelength division multiplexing (DWDM) system.
Feilong Wu   +5 more
doaj   +1 more source

Modulation Format Identification in Mode Division Multiplexed Optical Networks

open access: yesIEEE Access, 2019
In this paper, we address the problem of modulation format identification (MFI) for few mode fiber (FMF) transmission in elastic optical networks (EONs).
Waddah S. Saif   +4 more
doaj   +1 more source

Low-Loss Optical Nyquist Pulse Train Generation Using Nonauxiliary Wavelength Selective Switch in Communication Band

open access: yesIEEE Photonics Journal, 2019
We report low-loss optical Nyquist pulse train generation using a non-auxiliary wavelength selective switch (WSS). The typical approach for optical Nyquist pulse train generation involves two procedures.
Koji Takahashi   +3 more
doaj   +1 more source

Enhanced Radio Frequency System Integration in Optical Networks Using Adaptive Compensation Techniques

open access: yesIEEE Access
The combination of radio frequency (RF) systems with optical communication networks has made adaptive optical compensation methods an ideal means to improve communication. By reducing problems like chromatic dispersion (CD), polarization mode dispersion (
Zhongtian Ma   +3 more
doaj   +1 more source

An OSNR Monitoring Scheme based on Mean and Variance Value of Signal Amplitude

open access: yesGuangtongxin yanjiu
【Objective】Optical Signal-to-Noise Ratio (OSNR) is an important criterion for evaluating the performance of communication systems. For optical fiber communication systems, stable operation can only be ensured if the OSNR at the receiver end exceeds the ...
CHEN Fang   +6 more
doaj  

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