long-period fibre grating
Highly sensitive label free antibody detection using a long period fibre grating sensor
... A long period fibre grating (LPG) is a refractive index grating in- scribed in the fi bre ’ s core. The theory of operation of LPG and biosensor parameters used in this work can be found in ...
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Long period fibre grating as gas sensor for environmental pollution monitoring
... the grating was written was stated to be ...the grating in the core does not only increase the core refractive index in and around the grating but also the refractive index of the cladding around the ...
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Respiratory monitoring using fibre long period grating sensors
... (PTL) fibre, which is inscribed using the point by point method ...a fibre, is that the LPG produces attenuation bands that are insensitive to changes in the surrounding medium’s refractive ...carbon ...
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Modelling of optical fibre long period grafting sensors
... the fibre core and cladding equations, and utilising both graphical and numerical methods in ...of long-period grating periodicity prediction has been ...the long period ...
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Carbon dioxide measurements using long period grating optical fibre sensor coated with metal organic framework HKUST 1
... All the fabrication and deposition procedures followed the methodology described in (50) for a point by point approach and in (51) for the fabrication via amplitude masks. Although two different fabrication methods were ...
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On the Validity of the Effective Index Method for Long Period Grating Photonic Crystal Fibers
... culated by the evaluation of the effective propagation constant of cladding mode versus the external refractive index. Once the value of ambient refractive index reaches that of the cladding, discrete cladding modes are ...
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The application of a long period grating sensors to human respiratory plethysmography
... layered fibre prevents there from being any shift in the LPG’s attenuation bands when it is embedded in the ...the fibre from experiencing significant axial strain whilst at the same time providing a ...
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Liquid Resin Infusion process monitoring with embedded superimposed long period and short period Bragg grating sensor.
... optical fibre sensor based on dual period Bragg gratings, which can be used for discrimination of simultaneous strain and temperature measurements at the same spatial ...
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Highly sensitive volatile organic compounds vapour measurements using a long period grating optical fibre sensor coated with metal organic framework ZIF 8
... fibre long period grating (LPG) based volatile organic compound (VOC) sensor coated with ZIF-8, a material from the zeolite imidazolate framework (ZIF) family, functional coating is ...
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Period dependent temperature and ambient index effects on long period fibre gratings
... years, fibre gratings have been extensively investigated for their applications as a variety of sensors ...of long period gratings (LPGs) have been shown to be sensitive to changes in index of ...
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Graphene oxide-coated Long Period Grating-based fibre optic sensor for relative humidity and external refractive index
... many oxygen rich functional groups, such as epoxides and carboxylic groups, on the edges and the basal plane of a single layered graphene sheet. These oxygen functionalized groups allow GO to undergo various kinds of ...
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Optical characterisation of a long period grating using liquid droplets on an electrowetting-on-dielectric platform
... Continuous fibre devices on the other hand use just one single unbroken length of fibre, and the optofluidic element interacts with the fibre to again modify the optical ...optical fibre to ...
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Optical fibre long period grating gas sensor modified with metal organic framework thin films
... optical fibre long period grating (LPG) modified with a thin film of ZIF-8, zeolitic immidazol framework material, a subgroup of metal organic framework (MOF) family, was employed for the ...
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Optical fibre long period grating gas sensor modified with metal organic framework thin films
... fibre long period grating (LPG) modified with a thin film of ZIF-8, a zeolitic immidazol frame- work material and a subgroup of metal organic framework family, was employed for the detection of organic ...
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Implementation of vectorial bend sensors using long-period gratings UV-inscribed in special shape fibres
... special fibre types: flat-clad fibre (FCF), four-core fibre (4CF) and D-shaped fibre ...situated grating to distinguish between bending in orthogonal ...
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Design and characterisation of long period grating (LPG) - based optical fibre sensors for acoustic wave detection
... mode fibre. The effect of bending losses in a coiled optical fibre was originally proposed for the design of a hydrophone by Giallorenzi et ...the fibre was attached to an aluminium membrane and ...
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Graphene oxide coated long period grating based fibre optic humidity sensor
... In this paper, the response of a graphene oxide (GO) coated long period grating (LPG) to the change in temperature and in humidity is reported. To create the probe, an improved Hummer’s method was ...
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Volatile organic compounds sensing with use of fibre optic sensor with long period grating and mesoporous nano scale coating
... of fibre optic chemical and bio-sensors, the surface of the optical fibre is modified with a functional material that can selectively interact with the target ...of grating period and optical ...
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Simulation Comparison of Different Dispersion Compensation Techniques in Single Channel Optical fibre Using Optisystem
... the grating period is approximately half the input lights ...the grating length, therefore the frequency component is reflected on where the Bragg condition is ...The grating dispersion ...
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FBG-based fibre-optic current sensors for power systems protection : laboratory evaluation
... A broadband (approximately 40 nm bandwidth) super- fluorescent source, centred on the 1550 nm C-Band, illuminates a series of distant FBGs (only a single FBG shown in Figure 3). Each FBG is bonded to piezoelectric stacks ...
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