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19 articles for “Photodetection”
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Nanowire Photodetectors and Applications: A Review Study
Abstract: The utilization of nanowires and nanowire structures as photodetectors is an arising research subject. Novel gadget structures incorporated in single nanowire gadgets are additionally being effectively contemplated and created. Here, general NW-PD ideas are investigated, along with a point-by-point depiction of the actual phenomenon happening in nanowire photoconductors & phototransistors. Low dimensional frameworks like nanotubes and nanowires have intriguing, and technologically valuable, optical and electrical properties. Studies on these frameworks …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 2, 2024 · pp. 15–19 Read article
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Modeling and Simulation of ZnO/Si Hetreojunction Photodetector for Optical Communication
Abstract: AbstractIn this work, we present numerical simulation and modeling of ZnO/Si Heterojunction photodetectors. We analyze the performance of ZnO/Si Heterojunction photodetectors using commercial device simulation software ATLAS from Silvaco international. Device structure has been created using ATLAS and its electrical and optical characteristics has been simulated using ATLAS. Main figure of merits like dark current, photocurrent, spectral response and quantum efficiency has been extracted.Keywords: ZnO/Si, Heterojunction Photodetector, Silvaco Deckbuild software, …
Published in Trends in Opto-electro & Optical Communication · Vol. 9, Issue 3, 2019 · pp. 19–27 Read article
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Graphene: A Pathway to Advanced Photonics
Abstract: In this paper, we discuss the potential of graphene with its unique properties to create a new pathway for advancement in photonic devices. Modulators and photodetectors are discussed in detail as these are the foundation of advanced photonics. We begin with an outline of how graphene is discovered and how its production processes sped up its marketing value. In the next section, basic physics of modulator are discussed and how …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 24, Issue 2, 2022 · pp. 17–26 Read article
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An Evaluation of Photodynamic Therapy in Dentistry with a Focus on Surgical Applications
Abstract: Throughout the centuries, various forms of light therapy have found applications in medical settings. These include phototherapy for neonatal jaundice, psoralen molecules combined with ultraviolet A light (PUVA) in dermatology, and techniques like photodynamic therapy (PDT) and photodetection. In recent years, the emergence of antibiotic-resistant strains, such as methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus faecalis, has necessitated the exploration of alternative treatment options. Photodynamic antimicrobial chemotherapy (PACT) has arisen as …
Published in Research and Reviews : Journal of Surgery · Vol. 12, Issue 3, 2023 · pp. 1–9 Read article
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Detecting Pollutants in Vegetable leaf Water Content as an index of Change in Bandwidth Using Sonet/Sdh Domain
Abstract: This paper addresses the issue to detect the pollutants in vegetable leaf water content using upgraded high bandwith Sonet/Sdh domain..We first analyzed why most methods used as approximations of vegetation water content (such as vegetation stress indices, estimation of degree of curing and chlorophyll content) are not suitable for retrieving pollutants in water content at leaf level. We then presented the analysis supporting the use of high banwith Sonet to …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 0, Issue 0, 2012 · pp. 56–60 Read article
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Design and Simulation of an Optical Fiber Communication System Using MATLAB
Abstract: Optical fiber communication is widely used for high-capacity data transmission because of its large bandwidth, low attenuation, immunity to electromagnetic interference, and support for wavelength-division multiplexing. These properties make fiber a fundamental medium in access, enterprise, submarine, and backbone networks, where high data rates, low error probability, and reliable transmission over distances ranging from buildings and campuses to metropolitan and long-haul links are required. This paper presents a MATLAB-oriented design …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 3, 2026 Read article
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Sensors based Human Visual System: e-Retina
Abstract: This study explores the potential of bio-inspired sensor design to replicate the adaptive and highly efficient nature of the human visual system and e-retina. This study presents a novel sensor array incorporating foveated vision principles and dynamic range adaptation mechanisms. Our study demonstrates the improved performance of this system in complex visual scenes, particularly in low illumination and high-contrast scenarios. This study highlights the advantages of mimicking biological principles in …
Published in Trends in Opto-electro & Optical Communication · Vol. 15, Issue 1, 2025 · pp. 14–22 Read article
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Cutting- Edge Gravitational-Wave Detectors: Technology & Innovations
Abstract: Gravitational wave detectors using laser interferometry are sophisticated instruments designed to measure the ripples in spacetime caused by cosmic events such as the merging of black holes or neutron stars. This schematic outlines the fundamental components and working principle of a typical laser interferometric gravitational wave detector, such as those used in the LIGO and Virgo observatories. The core of the detector is an interferometer, typically a Michelson interferometer, with …
Published in International Journal of Universe · Vol. 1, Issue 1, 2025 · pp. 23–29 Read article
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Influence of Dielectric and Active layer Thickness on MgZnO Thin Film Transistor Electrical Characteristics
Abstract: From last decades, Thin Film Transistors Technology uses low-k dielectric material as an insulator. Insulator thickness plays an important role in device dimension. The insulating layer also known as the gate oxide separates the gate electrode from the channel region of the transistor. If the insulating layer is too thin, there is a greater chance that electrons can tunnel through the oxide layer, leading to leakage current. To mitigate this …
Published in Journal of Polymer & Composites · Vol. 11, Issue 5, 2023 · pp. 17–26 Read article
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How Optical Communication Powers the Digital World and Lights the Way
Abstract: Optical communication has become the backbone of modern digital infrastructure, allowing huge volumes of data to be sent quickly and reliably around the world. This technology is far better than standard electrical communication systems because it uses light to carry information over optical fibres. Its bandwidth is larger, signal loss is reduced, and it is resistant to electromagnetic interference. This article talks about the basic ideas behind optical communication, such …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 1, 2026 · pp. 15–21 Read article
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When Light Talks The Realm of Opto-Electronic Communication
Abstract: The basic principles of opto-electronics systems are discussed. In these systems the electrical signals are changed to optical signals for high speed and long distance communication and then converted back to electrical form at the receiver. This study underscores the essential elements including light sources, optical fibres, modulators, and photodetectors that facilitate the effective transmission of information with less loss and interference. The paper also discusses the benefits of opto-electronic …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 1, 2026 · pp. 1–14 Read article
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Study of Nano Germanium and Composited Forms
Abstract: This article has reviewed refinement synergism to same as earlier bulk semi-conduction. Colloidal 5 nm suspension from photolysis and pyrolysis for aerogel of II-VI quantum dots has subsidized extinction contour of semiconductor nano-crystal. Thereby transitional has accused between 0.6 to 5 eV to access from size-dependent optical and electrical effect instead of precipitation technique. Structure-oriented electronic and optical property has relevance to nano-semiconductor preparation method synergistic to earlier bulk. Nano-crystals …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 8–15 Read article
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Analysis of M-ary Signaling for Weak Turbulence Regime in FSO Communication System
Abstract: Abstract: The need for high data rate LOS communication is accomplished using the Free Space Optical communication. Being a very cost-effective approach, it contributes to the easy set-up and deployment of point to point terrestrial link. It transmits the light signal in free space channel (air, vacuum etc.) using LASERs or LEDs and received via photodetector. In this paper, the channel is modelled using Lognormal turbulence model. This channel model …
Published in Trends in Opto-electro & Optical Communication · Vol. 9, Issue 1, 2019 · pp. 24–31 Read article
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Li-Fi’s Marketplace in the Future
Abstract: In this work, we are describing our project on the Li-Fi system. The full form of Li-Fi is “light fidelity”. It is the forerunner of Wi-Fi. Li-Fi is a type of data transmission technology that will be used in the future because of its causes and benefits. Wi-Fi and Li-Fi are not similar to each other. There are many differences between them in every aspect. In terms of speed, Li-Fi …
Published in Journal of Communication Engineering & Systems · Vol. 12, Issue 3, 2022 · pp. 1–5 Read article
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Carbon Quantum Dots and Bioinspired Photonic Nanomaterials for Next-Generation Optoelectronics, Nanomedicine, and Photodynamic Applications
Abstract: Carbon quantum dots (CQDs) and bioinspired photonic nanomaterials have emerged as promising multifunctional platforms for a wide range of applications in optoelectronics, nanomedicine, biosensing, fluorescence imaging, and photodynamic therapy. CQDs are nanoscale carbon-based materials characterized by unique optical and electronic properties, including size-dependent photoluminescence, high photostability, excellent water solubility, low cytotoxicity, and remarkable biocompatibility. These characteristics make them attractive alternatives to conventional semiconductor quantum dots for both technological and biomedical …
Published in International Journal of Photochemistry and Photochemical Research · Vol. 4, Issue 2, 2026 · pp. 16–24 Read article
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PEROVSKITE MATERIALS: A REVIEW OF STRUCTURE, PROPERTIES AND
Abstract: Perovskite materials have emerged as one of the most promising classes of functional materials for next-generation energy conversion and optoelectronic applications due to their exceptional structural, optical, and electrical properties. Their unique ABX₃ crystal structure provides excellent compositional flexibility, allowing researchers to tailor their physical and chemical characteristics for specific applications. Features such as tunable bandgaps, high optical absorption coefficients, long charge carrier diffusion lengths, and balanced electron-hole transport have …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 16, Issue 2, 2026 Read article
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Shot Noise for 1550 nm Laser using Balanced Homodyne Detection
Abstract: AbstractSingle photon detectors are indispensable for secure communication in quantum cryptography. Shot noise, a fundamental limit to photodetection occurs due to discreteness of photons. Shot noise plays an important role in telecommunications and optical science because of its property of setting a practical limit to the signal-to-noise ratios. In order to implement BB84 protocol, there is a need to assess appropriate lower bound on experimental errors caused during secure key …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 47–50 Read article
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Theoretical Study of Surface Excitations at Planar Surface of Zinc Selenide (ZnSe)
Abstract: ZnSe is a II-VI semiconductor material and has very novel properties. So it is currently demanding for various applications. Dispersion relation is employed here to study the elementary surface excitations at the planar surface of Zinc Selenide (ZnSe) semiconductor. These excitations are of various types such as plasmons, phonons, excitons etc. Plasmons are the quanta of valence electron oscillations, phonons are the quanta of lattice vibrations and excitons are the …
Published in Research & Reviews : Journal of Physics · Vol. 11, Issue 3, 2022 · pp. 1–5 Read article
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Theoretical Study of UV Surface Waves in AlAs and AlN
Abstract: Surface waves excited at the interface between polar semiconductor surface and a dielectric when electromagnetic waves of appropriate frequency are incident on it. When the incident electromagnetic energy in the form of photons is absorbed, these surface excitations generate. They are of different kinds such as plasmon, phonon, exciton etc. Plasmon is the quanta of valence electron oscillation; phonon is the quanta of lattice vibration and exciton is the quanta …
Published in Research & Reviews : Journal of Physics · Vol. 12, Issue 1, 2023 · pp. 7–13 Read article