Effect of Fiber-Optics Nonlinearities in Long Haul and Ultra-High Speed DWDM Optical Transmission Networks at 10, 40 and 100 Gb/s Ultra-High Speed Data Rates

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Farman Ali ◽  
Yousaf Khan ◽  
Shahryar Shafique Qureshi ◽  
Shabir Ahmad ◽  
Muhammad Waqas
Keyword(s):  
Raman Scattering ◽  
Fiber Optics ◽  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Stimulated Raman Scattering ◽  
Ultra High Speed ◽  
Data Rates ◽  
High Speed Data ◽  
The Impact ◽  
Stimulated Raman

AbstractThe impact of major nonlinearities in optical fiber such as SRR (Stimulated Raman Scattering) and Four Wave Maxing (FWM) in cascaded amplifier Dense Wavelength Division Multiplexing optical long reach and high speed data rate transmission scheme have been investigated at different data rates. Pulse walk off effect is considered for the purpose of calculating Stimulated Raman Scattering (SRS) nonlinear factor. Examination has been accomplished to assess signal to noise ratio thinking about the consolidated impact of SRS and FWM within the sight of amplified spontaneous emission noise to achieve minutest noise at altered data rates.

scholarly journals Label-free chemical imaging flow cytometry by high-speed multicolor stimulated Raman scattering

2019 ◽  
Vol 116 (32) ◽  
pp. 15842-15848 ◽  
Author(s):  
Yuta Suzuki ◽  
Koya Kobayashi ◽  
Yoshifumi Wakisaka ◽  
Dinghuan Deng ◽  
Shunji Tanaka ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Raman Scattering ◽  
Cancer Biology ◽  
High Speed ◽  
Stimulated Raman Scattering ◽  
Chemical Imaging ◽  
Fluorescent Labeling ◽  
Label Free ◽  
Imaging Flow Cytometry ◽  
Stimulated Raman

Combining the strength of flow cytometry with fluorescence imaging and digital image analysis, imaging flow cytometry is a powerful tool in diverse fields including cancer biology, immunology, drug discovery, microbiology, and metabolic engineering. It enables measurements and statistical analyses of chemical, structural, and morphological phenotypes of numerous living cells to provide systematic insights into biological processes. However, its utility is constrained by its requirement of fluorescent labeling for phenotyping. Here we present label-free chemical imaging flow cytometry to overcome the issue. It builds on a pulse pair-resolved wavelength-switchable Stokes laser for the fastest-to-date multicolor stimulated Raman scattering (SRS) microscopy of fast-flowing cells on a 3D acoustic focusing microfluidic chip, enabling an unprecedented throughput of up to ∼140 cells/s. To show its broad utility, we use the SRS imaging flow cytometry with the aid of deep learning to study the metabolic heterogeneity of microalgal cells and perform marker-free cancer detection in blood.

Estimation of Signal-to-Cross Talk Ratio of Stimulated-Raman-Scattering-Induced Cross Talk in Wavelength-Division-Multiplexing-Based Radio-over-Fiber Links

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Kuldeep Singh ◽  
Sandeep K. Arya
Keyword(s):  
Raman Scattering ◽  
Wavelength Division Multiplexing ◽  
Cross Talk ◽  
Stimulated Raman Scattering ◽  
Modulation Frequency ◽  
Optical Power ◽  
Effective Area ◽  
Radio Over Fiber ◽  
Wavelength Division ◽  
Stimulated Raman

Abstract This paper evaluates the signal-to-cross talk ratio (SXR) of cross talk induced by stimulated Raman scattering (SRS) in radio-over-fiber (RoF) systems based on wavelength-division multiplexing. The reported study has modeled the relations of SXR to modulation frequency, optical power, transmission length, and effective area of fiber for various values of the walk-off parameter. The summary of experimental results reveals that SXR decreases with increases in channel input power and transmission distance and increased with increases in fiber effective area and modulation frequency. Results showed that increasing the walk-off parameter from 13.6 to 81.6 ps/km increased the SXR by almost 6 dBm. Furthermore, various fibers, including standard single-mode fiber (SMF), Corning LEAF, and Alcatel TeraLight were tested for their capacity to mitigate SRS-induced cross talk. These tests demonstrated that standard SMF suppressed SRS cross talk effectively and offered values of SXR 3 dBm and 6 dBm higher than the values exhibited by Alcatel TeraLight and Corning LEAF, respectively.

scholarly journals Influence of the Wavelength Dependence of Birefringence in the Generation of Supercontinuum and Dispersive Wave in Fiber Optics

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Rodrigo Acuna Herrera
Keyword(s):  
Numerical Analysis ◽  
Raman Scattering ◽  
Fiber Optics ◽  
Stimulated Raman Scattering ◽  
Wavelength Dependence ◽  
Dispersive Wave ◽  
Dispersive Waves ◽  
Parabolic Profile ◽  
Stimulated Raman

In this paper, we perform numerical analysis about the influence of the wavelength dependence of birefringence (WDB) in the Supercontinuum (SC) and dispersive wave (DW) generation. We study different birefringence profiles such as constant, linear, and parabolic. We see that, for a linear and parabolic profile, the generation of SC practically does not change, while this does so when the constant value of the birefringence varies. Similar situation happens with the generation of dispersive waves. In addition, we observe that the broadband of the SC increases when the Stimulated Raman Scattering (SRS) is neglected for all WDB profiles.

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