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Elliptical $${\varvec{q}}$$ -Gaussian laser beams with intensity ripples in axially inhomogeneous plasmas: self-focusing
Springer Science and Business Media LLC - - Trang 1-12 - 2024
Naveen Gupta
Theoretical investigation on self-focusing of an elliptical $$q$$ -Gaussian laser beam carrying an intensity ripple over its cross section in plasma with axial density ramp has been presented. The optical nonlinearity of plasma has been modeled by the relativistic mass nonlinearity of plasma electrons under th...... hiện toàn bộ
Performance investigation of hybrid optical amplifiers for high-speed optical networks
Springer Science and Business Media LLC - Tập 49 - Trang 298-304 - 2020
Amit Wason, Deepak Malik
The development of lightwave systems required large capacity communication networks in today’s high-tech era. To fulfill these challenges required proper amplification of the signals. Hybrid optical amplifier made a remarkable change in present optical networks in order to amplify the signals for better performance of a system. In this paper, we have proposed different hybrid optical amplifier con...... hiện toàn bộ
Efficient Mach–Zehnder modulators with high-pumped laser-based multimode doped fibers in high-modulated optical coded systems
Springer Science and Business Media LLC -
R. Thandaiah Prabu, S. Shyam Sundar, Jayakumar Thangaraj, V. Murugesan, Vivek Chidambaram, Prasad Balasubramanian, Ahmed Nabih Zaki Rashed, Shaik Hasane Ahammad
Performance comparison of external modulators in RoF for green radio communication
Springer Science and Business Media LLC - - Trang 1-9 - 2023
Diksha Singh, Nidhi Goel, Parvin Kumar
This paper implements a Mach–Zehnder modulator and electro-absorption modulator-based radio-over-fibre architectures utilising different types of fibres used in the link. By optimising the parameters of the implemented network, a 1-GHz signal is transmitted over the network with different configurations and the comparative analysis based on the bit error rate of the network is completed by modifyi...... hiện toàn bộ
Shining light on innovation: in-situ crafted polymeric frameworks unveil spectacular optical prowess for enhanced photocatalysis
Springer Science and Business Media LLC - - 2024
Rajat Singhal, Rajesh K. Yadav, Satyam Singh, Rehana Shahin, Shaifali Mishra, Abhishek K. Gupta, Ripsa Rani Nayak, Navneet K. Gupta, Jin-Ook Baeg, Gamal A. El-Hiti, Krishna Kumar Yadav
Covalent organic frameworks (COFs) have developed as highly crystalline porous organic materials with promising applications in gas adsorption and separation, catalysis, energy storage, and solar cells. It is highly valued due to the suitability of the optical band gap as well as its excellent light-harvesting capability. Therefore, herein we report on the newly in-situ prepared highly efficient p...... hiện toàn bộ
Optical frequency comb generation using a polarization division multiplexing Mach–Zehnder modulator
Springer Science and Business Media LLC - Tập 48 - Trang 60-64 - 2019
Lei Shang, Yanan Li, FuPing Wu
An approach to generating flat optical frequency comb (OFC) is proposed and experimentally demonstrated using a single polarization division multiplexing Mach–Zehnder modulator (PDM-MZM). Experimental results show that the proposed OFC generator can produce nine lines with a spectral flatness of 0.63 dB. The unwanted-mode suppression ratio of the OFC is 17.5 dB. When cascading with another PDM-MZM...... hiện toàn bộ
Generation, based on compression of similariton, of pulses at 100 GHz–2.5 THz and ultra-high bit rates of 40 Gb/s–1.28 Tb/S by OTDM
Springer Science and Business Media LLC - Tập 51 - Trang 1012-1027 - 2022
Mohamed Okba Saouchi, Kaddour Saouchi, Toufik Hafs, Amar Hamouda
Using a 20 GHz repeater-controlled fibre device, we show digitally, using similar auto amplification, the production of ultra-short pulse trains in 1550 nm at ultra-high multiple flow rates. Our approach is based on three consecutive steps. The first is based on the preliminary numerical study of the optimisation of auto-similar amplification in an optical fibre in normal dispersion regime. From t...... hiện toàn bộ
Optical waveguide analysis using alternative direction implicit (ADI) method in combination with successive over-relaxation (SOR) algorithm
Springer Science and Business Media LLC - - Trang 1-7 - 2023
Anup Kumar Thander, Goutam Mandal
The aim of this research is to implement an implicit two step but unconditionally stable numerical scheme which is capable of efficiently solving two-dimensional Helmholtz wave equation in different rib waveguide structures in GaAs material system. In particular, we use alternative direction implicit (ADI) method in combination with successive over-relaxation (SOR) algorithm for optical modal anal...... hiện toàn bộ
Thin Film Characterisation By Mirage Effect
Springer Science and Business Media LLC - Tập 21 - Trang 112-114 - 1992
V. M. Murukesan, K. Rajasree, P. Radhakrishnan
Influence of Primary Astigmatism on the Performance of Optimum Apodizers
Springer Science and Business Media LLC - - 1975
Subhash C. Biswas, Albéric Boivin
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