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552 articles for “Optics”
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Computer Networking: Role of Communication, Trends and Issues
Abstract: Computer networking and communication signal both terms are both basic requirements in the world because all of the worlds are in-directly depends-on the Internet. Word communication is much important in the field of data science and technology. Communication systems are the basic need of society to share information about each other. At present lot of devices are available to use communication systems like mobile, computers, laptops, tabs, and many more. …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 8, Issue 3, 2021 · pp. 1–10 Read article
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Structural Health Monitoring of Bridges using Digital Image Correlation: A Case Study
Abstract: The rapid development of the transportation section and continuous change in traffic volume, density, and loading patterns over the last few decades have increased the probability of a hazard and reduced the life of existing bridges. Structural Health Monitoring (SHM) is a process of implementing a damage detection and characterization strategy for engineering structures. This paper presents a review of various trends and technology adopted for SHM. However, it focuses …
Published in Recent Trends in Civil Engineering & Technology · Vol. 9, Issue 3, 2019 · pp. 1–10 Read article
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Health Monitoring Iot Based Virus Fever Detection System Using Non Inversive Method
Abstract: Health monitoring IoT to detect and count platelet to diagnose virus Fever this reduces labour intensive, time and cost. Vital signs are indicators of the body's fundamental processes. Body temperature, heart rate, breathing rate, and respiration are the four primary vital indicators that healthcare professionals regularly check (respiration). They can be measured in a hospital, at home, during an emergency medical situation, or while travelling. On-invasive blood related parameters covering …
Published in Recent Trends in Electronics Communication Systems · Vol. 9, Issue 3, 2022 · pp. 19–26 Read article
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A Review on working principle of temperature sensors
Abstract: AbstractTo recognise and respond to electrical or optical signals, intelligent sensors are frequently utilised. Everyday activities include the usage of sensors. Sensors help the environment around us monitor and report more effectively. They are designed to improve human lives in almost every area and make them far more accessible. They are utilised in homes, residences, malls, hospitals, and smartphones. Different kinds of sensors are employed in daily life. The workings …
Published in Trends in Mechanical Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 21–25 Read article
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Performance Analysis of 160 Channel WDM System with EDFA Amplifier
Abstract: AbstractErbium Doped Fiber Amplifier (EDFA) amplifiers are popularly used in wavelength division multiplexing (WDM) system to compensate attenuation and dispersion. The performance of EDFA depends on various parameters such as, EDFA length, Er+3 doping concentration, active fiber length, pump power, pumping wavelength etc. This paper analyzed the performance of EDFA with counter pumping and co-pumping varying the EDFA length, pump power and Er+3 doping concentration and optimized the values for …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 25–34 Read article
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IOT Door Monitoring System using Android Application
Abstract: AbstractThis paper presents the block diagram and working of an internet of things (IOT) door monitoring system using android application. The Android application used in this system is Blynk Application which has a platform with IOS and Android apps to control Arduino and Raspberry Pi over the Internet. It's a digital dashboard where we can build a graphic interface for our project by simply dragging and dropping widgets. This application …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 21–24 Read article
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Heterogeneous Spectrum Sensing in Cognitive Radio Network using Enhanced Energy Detection and Matched Filter
Abstract: AbstractOne of the most predominant aspect in cognitive radio networks is spectrum sensing which allows a secondary user (unlicensed user) to detect the presence or absence of a primary user (licensed user). A number of sensing techniques have been proposed in the past. In order to achieve a high spectrum efficiency, the compatibility of the common spectrum detection techniques primarily used such as energy detection and matched filter are employed …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 3, 2017 · pp. 35–42 Read article
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Interface Engineering of Graphene Multi-Junction InGaP/GaAs/InGaAs/Ge Solar PVC
Abstract: AbstractThe main impediment faced by solar Photo-Voltaic Cell (PVC) is the excitation of charge carriers by high and low energy photons to make them reach the conduction band as this superintends the output device current. To enhance the device current, intermediate engineering of solar PVC is the most prominent strategy. An Inter-Mediate Layer (IML) serves as a spectrally selective layer between the muti-junctions for tandem solar cell. This research work …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 1–7 Read article
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Smart Bin Using GSM Modem
Abstract: AbstractIn the modern era, day-by-day urbanization has increased swiftly and waste production is also increasing day-by-day in the cities. Waste management has emerged as a major challenge for the cities. By the help of this paper we can achieve this good cause. In this paper, we are presenting the idea of smart bin which is based on Arduino and GSM modem Ultrasonic sensor is interfaced with GSM modem. Ultrasonic sensor …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 1, 2018 · pp. 16–19 Read article
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Improved Low Confinement Photonic Crystal Fiber with Ultra Flattened Dispersion
Abstract: AbstractIn this study, to obtain lower value of dispersion with flatness for wideband, more complicated design will be proposed with multiple-hole diameter and shapes. Confinement loss is also reduced by increasing the number of rings. We optimized cladding region in which there are holes of different diameter and shapes. Numerical investigation shows that value of confinement loss is very low -0.00116 dB/Km and ultra-flat dispersion over wideband at operating frequency …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 1–5 Read article
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Comparative Study of MEH-PPV, Alq3 and P3HT based OLEDs
Abstract: AbstractElectroluminescence behavior of MEH-PPV (Poly [2-methoxy-5-(2’-ethyl-hexoxy)-1, 4 phenylenevinylene]), Alq3 (Tris (8-hydroxyquinolinato) aluminium) and P3HT as the emissive layer has been investigated in the organic light emitting diode (OLED). 2D numerical simulations have been performed using finite element method from device simulation software ALTLAS from Silvaco Inc. Effect of doping concentration and thickness of active layer on device performance has been studied.Keywords: OLED, numerical simulation, P3HT, MEH-PPV, Alq3Cite this ArticleShilpi Raj, …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 25–43 Read article
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Design of Solar and Wind Power Generation System
Abstract: AbstractIn current year’s generation of electricity victimization, the various kinds of renewable sources square measure specifically evaluated within the economic performance of the overall instrumentality. Solar power and wind power have received considerable attention worldwide. The bestowed methodology is applied to gauge the potential of Solar (photovoltaic) –wind hybrid system to provide electricity for a community and different state. It has helped in reducing pollution and thereby overcoming global warming. …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 3, 2018 · pp. 8–16 Read article
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Surface-Driven Capillary Flow of Dyed Aqueous Ethanol in the PMMA Microchannel Fabricated by Maskless Lithography, Hot Embossing Lithography and Direct Bonding Technique
Abstract: AbstractPolymethylmethacrylate (PMMA) as polymer is used to fabricate a dual sudden expansion microchannel by the maskless lithography, hot embossing lithography and direct bonding technique inside the cleanroom laboratory. Dyed aqueous ethanol (90% dyed water, 10% ethanol) is used as working liquid to record the surface-driven capillary flow in the fabricated microfluidic device using a CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second. This …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 3, 2018 · pp. 37–40 Read article
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BER Improvement in Fading Conditions Using QAM
Abstract: AbstractThe future mobile network requires huge capacity, coverage, energy efficiency and spectral efficiency. In different fading conditions, like Gaussian noise channel, Rician fading and Rayleigh fading conditions, higher order QAM can improve spectral efficiency by improving bit error rate. Additive white Gaussian noise model describes the effect of random processes in nature. Rayleigh distribution has static time varying nature on the receiver side. The envelope of Rician fading is small …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 2, 2017 · pp. 1–6 Read article
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Effect of Notching on the Return loss of T-shaped Microstrip Patch Antenna for Wireless Communication System
Abstract: AbstractWith the loading of a pair of notches, a T-shaped slot and a pair of rectangular slots, novel bandwidth enhancement of microstrip antenna is demonstrated. The design is fed through a single coaxial probe. The proposed antenna is a modification of a simple T-shaped antenna which provides good radiating characteristics with enhanced bandwidth. The proposed antenna covers the S band and is used for many wireless applications. The proposed antenna …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 2, 2017 · pp. 7–11 Read article
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Passive Capillary Flow of Aqueous Microparticle Suspensions in the Sudden Expansion PMMA Microchannels
Abstract: AbstractAuthor has fabricated a set of sudden expansions micro channels in the polymethylmethacrylate (PMMA) microfluidic devices by the maskless lithography, hot embossing lithography, drilling, air dielectric barrier discharge (DBD) plasma processing, direct bonding technique and chip separation technique. The surface-driven capillary flow of dyed water and three individual aqueous microparticle suspensions are studied with respect to the effects of channel aspect ratio, effective viscosity and surface wettability. The number densities …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 1, 2017 · pp. 13–17 Read article
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Surface-Driven Capillary Flow of Aqueous Microparticle Suspensions as Working Liquids in the PMMA Microfluidic Devices
Abstract: AbstractPolymethylmethacrylate (PMMA) microfluidic devices have been fabricated by the maskless lithography, hot embossing lithography, drilling and direct bonding technique. The influence of effective viscosity on the speed of surface-driven capillary flow of aqueous microparticle suspensions has been studied. The surface-driven capillary flow of any particular aqueous microparticle suspension is faster in the microchannel of larger channel aspect ratio. Also, the surface-driven suspension flow is faster on the surface of higher …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 1, 2017 · pp. 18–21 Read article
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Experimental Investigations on the Effects of Channel Aspect Ratio and Surface Wettability to Control the Surface-Driven Capillary Flow of Water in Straight PMMA Microchannels
Abstract: AbstractTotal 214 individual straight polymethylmethacrylate (PMMA) microchannels have been fabricated by the maskless lithography, hot embossing lithography, direct bonding technique, and atmospheric pressure air dielectric barrier discharge (DBD) plasma processing. The experimental investigations on the effects of structural properties (channel aspect ratios) and physical properties (surface wettability, capillary pressure and kinetic energy) on the surface-driven capillary flow of dyed water in straight PMMA microchannels is a novel approach in this …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 1–12 Read article
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Design and Analysis of a Low Loss Polarization Maintaining Waveguide for Transmission of THz Waves
Abstract: AbstractThis paper presents the design of a novel porous core kagome lattice photonic crystal fiber (PCF) which acts as a low loss and polarization maintaining teraheartz (THz) waveguide. Using finite element method (FEM), properties of the proposed PCF are simulated in details including the effective material loss (EML), confinement loss, single mode propagation. Cyclic olefin copolymer, also known as TOPAS material have been chosen for the air micro structured inhibited …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 13–22 Read article
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Multi-variable Analysis and Optimization of Electrical Discharge Machining Process Using a PCA-ANN Based Approach
Abstract: AbstractThe optimum selection of process parameters has played a crucial role in electrical discharge machining (EDM) for improving the material removal rate, reducing the tool wear rate and radial overcut. In this paper, optimum parameters while machining 202 stainless steel using copper electrode as a tool has been investigated. For optimization of process parameters along with multiple quality characteristics, principal component analysis coupled with artificial neural network method has been …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 39–45 Read article