Springer Science and Business Media LLC

Công bố khoa học tiêu biểu

* Dữ liệu chỉ mang tính chất tham khảo

Sắp xếp:  
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
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
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
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
Influence of Primary Astigmatism on the Performance of Optimum Apodizers
Springer Science and Business Media LLC - - 1975
Subhash C. Biswas, Albéric Boivin
Optimal design of ultrabroadband omnidirectional planar structure absorber using anti-reflection coatings
Springer Science and Business Media LLC - Tập 51 - Trang 154-160 - 2021
Haoyuan Cai, Shihan Shan, Xiaoping Wang
A near-ideal ultrabroadband absorber composed of Ti, SiO2, Al2O3 and TiO2 multilayer film is theoretically designed in this work. Our proposed absorber is optimized using a genetic algorithm, and its average absorption is 97% between 400 and 2700 nm at normal incidence. A detailed analysis, based finite difference time domain (FDTD) method, indicates that Fabry–Perot resonance, and the anti-reflec...... hiện toàn bộ
High Reflectance Optical Thin Film Grating Light Valve
Springer Science and Business Media LLC - Tập 36 - Trang 145-152 - 2015
S. Perumal Sankar, S. Sundaravadivelu
Micro-Electro-Mechanical-Systems (MEMS) is a technology that has made remarkable progress during the past ten years. Application of MEMS in optical systems, which is known as optical MEMS, has initiated the new category of MOEMS (Micro-Opto-Electro-Mechanical-Systems) enabled us to combine the mechanical, electrical and optical components in very small scale. The significant impact of MOEMS in dis...... hiện toàn bộ
Wavelength Dependent α-Profile Model of Multimode Fiber-Optic Channel
Springer Science and Business Media LLC - Tập 27 - Trang 55-62 - 1998
M. Meenakshi, V. C. Ravichandran
A model for the α-profile multimode GI fiber-optic channel including the wavelength dependence of the fiber around the optimum value of α is developed. Losses due to propagation (Ultra lowloss fibers) and modal mixing (more significandy affects the BER probability) are neglected in this paper. The parameters influencing the total dispersion in the GI fiber such as the source wavelength, wavelength...... hiện toàn bộ
An exploration on VLC channel model and characteristics using LEDs in underground mining
Springer Science and Business Media LLC - Tập 52 - Trang 1399-1404 - 2022
B. Anitha Vijayalakshmi, B. Arunsundar, Anitha Gopalan, P. Gandhimathi, V. Kavitha, M. Nesasudha
In the underground mining environment, it is very vital to have reliable communication system to avoid frequently occurring dramatic disasters. The use of visible light communication (VLC) inside the mining environment can be considered instead of wired and radio communication. The communication scenarios inside the mine concentrate on illumination percentage and VLC channel characteristics. Less ...... hiện toàn bộ
Genetic algorithms for lens design: a review
Springer Science and Business Media LLC - Tập 48 - Trang 134-144 - 2018
Kaspar Höschel, Vasudevan Lakshminarayanan
Genetic algorithms (GAs) have a long history of over four decades. GAs are adaptive heuristic search algorithms that provide solutions for optimization and search problems. The GA derives expression from the biological terminology of natural selection, crossover, and mutation. In fact, GAs simulate the processes of natural evolution. Due to their unique simplicity, GAs are applied to the search ...... hiện toàn bộ
Tổng số: 1,617   
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 10