long-period grating fabrication
Optical fibre long period grating gas sensor modified with metal organic framework thin films
... the fabrication of different types of materials from MOF family however fabrication of these materials in the form of thin films is considered to be crucial for many applications especially for sensors and ...
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Liquid Resin Infusion process monitoring with embedded superimposed long period and short period Bragg grating sensor.
... In this study, we set out an experimental method for measuring strain and temperature applied in the composite part during its fabrication by Liquid Resin Infusion (LRI) process [8]. It consists of in- situ sensor ...
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Graphene oxide coated long period grating based fibre optic humidity sensor
... functionalized LPG surface using the same technique (dip duration 120 seconds and drying at 100C for 5 minutes - this process was carried out repeatedly until a noticeable coating was achieved on the LPG surface). A ...
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Graphene oxide-coated Long Period Grating-based fibre optic sensor for relative humidity and external refractive index
... A novel approach to the design of humidity sensor probes and an external refractive index monitors has been presented, based on a GO-coated LPG. The probes operate by exploiting the super-permeability of the GO used to ...
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Bending and orientational characteristics of long period gratings written in D-shaped optical fiber
... The D-shaped single mode fiber was originally designed for coupler fabrication. The core’s radius is 4 m, and the distance between its center and the flat of the D is 9 m with a cladding radius of 62.5 m. The ...
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Optical fibre long period grating gas sensor modified with metal organic framework thin films
... Among the variety of MOFs, zeolitic imidazole framework (ZIF)—ZIF-8 possesses properties that show promise for sensor development, such as its chemical robustness and thermal stabil- ity due to the sodalite (SOD) type of ...
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Carbon dioxide measurements using long period grating optical fibre sensor coated with metal organic framework HKUST 1
... The fabrication time can be reduced rapidly in the later method using the washing by ethanol only, where the residues of unreacted parts of the initial (mother) solutions are removed from the evolving HKUST-1 ...
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Long period grating in multicore optical fiber:an ultra-sensitive vector bending sensor for low curvatures
... expensive fabrication approach, as well as the difficulty of splicing some of these fibers to the ordinary fibers, are considered as significant drawbacks of these ...and fabrication design parameters of ...
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Fabrication of micro ridge long period gratings inscribed on polarization maintaining fibers
... stress region was etched higher than that of the silica cladding [6,7]. The diameters of the etched and unetched region were measured to be approximately 64 μm and approximately 101 μm, respectively. The grating ...
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Design and characterisation of long period grating (LPG) - based optical fibre sensors for acoustic wave detection
... Most reported intensity modulated acoustic sensors are using a simple and low cost sensor interrogation. Generally the sensor only requires a light source and a photodetector to detect the light intensity variations due ...
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Sensing characteristics of a novel two-section long-period grating
... It can be seen that, owing to the different recording characteristics of the two regions, the attenuation band of the eighth cladding mode in the bare section is spectrally located close to the attenuation band of the ...
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A Study on the Braided Fabrication of Fiber Bragg Grating sensor
... The fiber optic cores have a cycle of 1.54cm with a period of 0.49𝛑. From 0.5 𝛑 to 0.6 𝛑, 6cm torsion causes the internal tension on the Bragg grating in the sensors to increase twofold, thus increasing the ...
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Fabrication of regenerated grating using carbon dioxide laser
... 14:35 - 15:35 Trade Talks Presider: Alexis Mendez; MCH Engineering, LLC, USA 14:35 -14:55 Making glass survive where no glass has ever gone before - the challenge of using optical fibers[r] ...
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16. Development of birefringence free ridge waveguides for waveguide isolators
... fragile grating members require a carefully engineered coarse support mesh and metal frame to withstand the rigors of rocket launch and space ...Transmission grating periods down to 100 nm and sizes up to ...
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Implementation of vectorial bend sensors using long-period gratings UV-inscribed in special shape fibres
... (LPG) structures. We have studied the bending sensitivity characteristics of the LPGs in three special fibre types: flat-clad fibre (FCF), four-core fibre (4CF) and D-shaped fibre (DF). The LPGs in these fibres show ...
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Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme
... Abstract. The cardiovascular health of the human population is a major concern for medical clinicians, with cardiovascular diseases responsible for 48% of all deaths worldwide, according to the World Health Organization. ...
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Performance of Mexican Fuel at the Laguna Verde Nuclear Power Plant (C257)
... The fabrication process used is similar to the one used elsewhere for BWR fuel with ADU powder. However, the small pilot plant scale introduced some differences. One was the use of batch furnaces and dry hydrogen ...
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Optical diffraction based silicon sensors for the detection of DNA sequences
... optimum grating period for the optical system. Additional grating patterns were created to analyse the impact upon the diffraction pattern of the ratio of line width to line spacing, or the effect of ...
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Design and analysis of nano-structured gratings for conversion efficiency improvement in GaAs solar cells
... subwavelength grating (SWG) structures have been identified as promising candidates for realizing high conversion efficiency in photovoltaics or solar cells due to their small amount of reflection ...the ...
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Study on Improving the Absorption Efficiency of Uncooled Infrared Sensor by Using Grating
... a grating to generate grating vectors satisfying the wave vector matching conditions by light diffraction; near-field excitation, light waves containing no less than the SPPs wave vector are generated by ...
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