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Relevant bibliographies by topics / Butterworth optical filter

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Academic literature on the topic 'Butterworth optical filter'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Butterworth optical filter"

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Subhashini, N., and A. Brintha Therese. "Performance Analysis of Different Electrical Filters in 10G Hybrid Passive Optical Network." International Journal of Engineering & Technology 7, no. 4 (2018): 6652. http://dx.doi.org/10.14419/ijet.v7i4.15758.

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With growing number of applications and network traffic, optic fibers are extensively used in the access part of the network. Passive Optical Networks (PON) in particular, Ethernet PON (EPON) networks based on Time Division Multiple Access (TDMA) are more prominently used in many parts of the world. Though Wavelength Division Multiplexing (WDM) PON has its own advantages, considering the cost and utilisation of such networks in the access part makes it less useful. On the other hand, Hybrid PON network combines the advantages of both EPON and WDM PON Networks. The objective of this paper is to

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Sharma, Priyanka, and Himali Sarangal. "Simulation and Analysis of Filters Using Different Photodiode and Wavelength in Free Space Optics." Asian Journal of Computer Science and Technology 5, no. 1 (2016): 25–29. http://dx.doi.org/10.51983/ajcst-2016.5.1.1760.

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Free space optics is a technology which uses beam of light to provide optical connection for transmitting and receiving purposes. For the increasing demand for high bandwidth in different network topology, FSO links has been a solution to the connectivity bottleneck problem. Transmitter consists of NRZ modulating CW laser with the link range 1 km in the wavelength 1310 nm or 1550 nm. When the signal is transmitted in the channel, the performance could be severely degrated due to atmospheric attenuation and earth inequalities. The purpose of this paper is to find a suitable filter for any of th

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Li, Yong-An. "Synthesis for Butterworth Filter Using Compact VDTA Based on Sallen- Key Topology." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, no. 5 (2020): 681–88. http://dx.doi.org/10.2174/2352096512666191004123213.

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Background: The original filter including grounded or virtual ground capacitors can be synthesized by using the NAM expansion. However, so far the filters including floating capacitor, such as Sallen-Key filter, have not been synthesized by means of the NAM expansion. This is a problem to be researched further. Methods: By using the adjoint network theory, the Sallen-Key filter including floating capacitor first is turned into a current-mode one, which includes a grounded capacitor and a virtual ground capacitor. Then the node admittance matrix, after derived, is extended by using NAM expansio

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Cai, Xiao Dong, and Zhi Gang Liu. "Signal Processing Circuit Design and Application for Infrared Optical System Based on FPGA." Applied Mechanics and Materials 347-350 (August 2013): 1328–32. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1328.

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The signal processing circuit based on FPGA was proposed in the paper, carrying out the function such as programmable signal amplification, adaptive filtering and so on. Among them, the programmable amplifier module was achieved with the programmable gain amplifier in series; Adaptive filter module was implemented with the Butterworth second-order active filter, to change the cutoff frequency of the filter by changing the potentiometer resistance. Experimental results show that the signal processing circuit was applied in the infrared optical system improving the signal to noise ratio of the i

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Belevitch, Vitold. "On filter pairs with butterworth characteristics." International Journal of Circuit Theory and Applications 15, no. 1 (1987): 51–60. http://dx.doi.org/10.1002/cta.4490150104.

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Teresa Sanz, M., Santiago Celma, and Belén Calvo. "Low-distortion 4th order programmable Butterworth filter." Microelectronics Reliability 47, no. 2-3 (2007): 471–76. http://dx.doi.org/10.1016/j.microrel.2006.05.008.

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Duro, Xhoena Polisi, Arban Uka, Griselda Alushllari, Albana Ndreu Halili, Dimitrios A. Karras, and Nihal Engin Vrana. "Optimizing combination of feature extraction and classifiers in supervised classification of cells images." Edelweiss Applied Science and Technology 9, no. 2 (2025): 682–707. https://doi.org/10.55214/25768484.v9i2.4570.

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Developments in the medical field have opened the opportunity to conduct analyses on a personalized patient level. One of the important analyses that can be conducted is the cellular response to engineered materials, and the most appropriate non-invasive methods are imaging. These images of the cells are unstained brightfield images, as they are acquired from multiparametric microfluidic chambers in the presence of biomaterials and fluids that can change the optical path length over time as the cells’ health state is monitored. These experimental conditions lead to an image dataset with unique

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Roy, S. C. Dutta. "Average time delay of an analogue butterworth filter." International Journal of Circuit Theory and Applications 14, no. 1 (1986): 79–82. http://dx.doi.org/10.1002/cta.4490140105.

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Golovastikov, Nikita V., Dmitry A. Bykov, Evgeni A. Bezus, and Leonid L. Doskolovich. "Lines of Quasi-BICs and Butterworth Line Shape in Stacked Resonant Gratings: Analytical Description." Photonics 10, no. 4 (2023): 363. http://dx.doi.org/10.3390/photonics10040363.

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We propose analytical approximations of the reflection and transmission spectra of a stacked dielectric diffraction grating consisting of two identical resonant guided-mode gratings with a Lorentzian line shape. These approximations, derived using the scattering matrix formalism, are functions of both angular frequency ω and the tangential wave vector component kx of the incident wave. We analytically demonstrate and, using full-wave simulations with rigorous coupled-wave analysis technique, numerically confirm that by a proper choice of the thickness of the dielectric layer separating the gra

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Trefilov, S. A., Yu R. Nikitin, and D. A. Ponomarev. "Study of Digital Discrete Fast High Order Bandpass Filter on TMS320F28377D Processor for Mobile Robot Navigation." Vestnik IzhGTU imeni M.T. Kalashnikova 27, no. 4 (2024): 55–69. https://doi.org/10.22213/2413-1172-2024-4-55-69.

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A digital discrete high-order fast bandpass filter on the TMS320F28377D processor for mobile robot navigation is developed and investigated. The application of the developed band-pass filter in beacon laser navigation systems is proposed in order to increase the speed of mobile robot coordinate computation when solving the fast convolution problem. A fast convolution algorithm based on a digital continuous band-pass Butterworth filter, which is optimal in terms of minimum computation time, is presented. The developed 22-order Butterworth filter is implemented on a digital signal processor TMS3

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Book chapters on the topic "Butterworth optical filter"

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Samagaio, Gabriela, Joaquim de Moura, Jorge Novo, and Marcos Ortega. "Optical Coherence Tomography Denoising by Means of a Fourier Butterworth Filter-Based Approach." In Image Analysis and Processing - ICIAP 2017. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68548-9_39.

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Deyasi, Arpan, and Angsuman Sarkar. "Blueshift of Optical Signal in PhC Based Butterworth Filter Due to Joule Heat Dissipation." In Communications in Computer and Information Science. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8578-0_28.

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Gupta, Mridul, Mayank Kansal, Shriram Thyagarajan, Prajjwal Singh Chauhan, and D. K. Upadhyay. "Design of an Optimal Microstrip Butterworth Low-Pass Filter Using Colliding Bodies Optimization." In Lecture Notes in Electrical Engineering. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9775-3_82.

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Nayak, Seema, and Amrita Rai. "Synthesis and Analysis of Optimal Order Butterworth Filter for Denoising ECG Signal on FPGA." In Algorithms for Intelligent Systems. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4936-6_39.

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Mahata, Shibendu, Rajib Kar, and Durbadal Mandal. "Optimal design of fractional-order Butterworth filter with improved accuracy and stability margin." In Fractional-Order Modeling of Dynamic Systems with Applications in Optimization, Signal Processing and Control. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-32-390089-8.00016-7.

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Kirubanantham, P., A. Saranya, V. Bibin Christopher, B. Prakash, and M. Suresh Anand. "AI-Based Deep Memory Alex Neural Network for Early Detection of Forest and Land Fires." In Advances in Geospatial Technologies. IGI Global, 2024. https://doi.org/10.4018/979-8-3693-8104-5.ch002.

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In recent years, the National Institute of Aeronautics and Space (LAPAN) has used hotspot data derived from satellite imagery to identify and detect forest and land fires at an early stage. Hotspot data has greatly facilitated firefighting operations and enhanced enforcement activities. Nevertheless, the system has certain limitations, mostly stemming from its incapacity to differentiate between forest and land fires and other sources of heat or fires produced by typical human actions. In addition, this approach requires time-consuming verification and significantly depends on human elements f

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Conference papers on the topic "Butterworth optical filter"

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Winick, Kim A., and Jose E. Roman. "Dispersion compensation and pulse compression using waveguide grating filters." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.my7.

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In long distance optical communication systems, fiber chromatic dispersion degrades the system’s transmission capabilities by limiting the achievable bit rates and repeater spacings. One way to solve this problem is to perform dispersion compensation, or equivalently pulse compression, in the communications network. Recently, chromatic dispersion compensation in a 5-Gbit/s transmission system has been achieved with a fiber Fabry-Perot optical equalizer. The amount of dispersion compensated by a single Fabry-Perot equalizer is, however, limited. Linearly chirped waveguide grating filters can al

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Mak, Jason C. C., Antoine Bois, and Joyce K. S. Poon. "Programmable Multi-Ring Butterworth Filters with Automated Resonance and Coupling Tuning." In Optical Fiber Communication Conference. OSA, 2016. http://dx.doi.org/10.1364/ofc.2016.tu2f.4.

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Pei, Shuiqiang, Xiaoguang Hu, Guofeng Zhang, and Li Fu. "Improved Voltage Sag Detection Method and Optimal Design for the Digital Low-Pass Filter in Small UAVs." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46401.

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Real-time and accurate detection of the voltage sag characteristics is the premise to achieve dynamic voltage restorer compensation. An improved αβ-dq transformation detection method is presented for the limitations of traditional detection methods. In this method, the α-axis component of the αβ static coordinate system is deduced according to the single-phase voltage. The virtual β-axis component is constructed from the derivative of the α-axis component. The magnitudes, duration, phase-angle jump of the voltage sag are detected quickly and accurately by αβ-dq transformation and low-pass filt

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Benhala, Bachir. "Optimal Low-Pass Butterworth Filter Design by an Enhanced ACO Algorithm." In 2019 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2019 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM). IEEE, 2019. http://dx.doi.org/10.1109/acemp-optim44294.2019.9007216.

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Nozawa, Naoki, Yusuke Osawa, and Keiichi Watanuki. "Feature Selection and Estimation of Route and Gait During Walking with Route and Speed Changes by Surface Electromyograph Using Transformer." In 15th International Conference on Applied Human Factors and Ergonomics (AHFE 2024). AHFE International, 2024. http://dx.doi.org/10.54941/ahfe1004678.

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Recently, with the increase in the number of elderly people requiring nursing care, walking assist devices using an inverted pendulum model and electrical stimulation have been researched and developed to improve the walking ability of elderly people. However, most of these assistive devices are designed only for straight walking on a flat road and do not support unsteady walking, such as turning and acceleration/deceleration. It has been reported that unsteady walking accounts for 40% of our daily life. Hence, it is important to provide training and support for unsteady walking. The purpose o

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Yang, Yong, Yachao Jiang, Xingdong Li, and Wenlu Yang. "Optimal design of Voltage-controlled Voltage Source second-order unit gain Butterworth low-pass filter." In 2011 International Conference on Electric Information and Control Engineering (ICEICE). IEEE, 2011. http://dx.doi.org/10.1109/iceice.2011.5777247.

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Choo, Gihoon, Christi Madsen, Kamran Entesari, and Samuel Palermo. "A reconfigurable silicon photonic 4th-order filter for synthesizing butterworth, Chebyshev, and elliptic responses." In 2017 IEEE Avionics and Vehicle Fiber-Optics and Photonics Conference (AVFOP). IEEE, 2017. http://dx.doi.org/10.1109/avfop.2017.8169768.

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Murthy, R. Radhakrishna, D. Karuna Sagar, and P. K. Mondal. "Reduction in Edge-ringing in coherent imaging of Edge objects with Butterworth's amplitude filters." In Frontiers in Optics. OSA, 2003. http://dx.doi.org/10.1364/fio.2003.wm4.

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Mahata, Shibendu, та Ritu Rani De Maity. "Optimal Design of (α + β)-Order Butterworth Filter and Its Realization Using RL_βC_α Circuit". У 2023 International Conference on Computer, Electrical & Communication Engineering (ICCECE). IEEE, 2023. http://dx.doi.org/10.1109/iccece51049.2023.10085113.

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