long-period fiber grating
Non-invasive respiratory monitoring using long-period fiber grating sensors
... optical fiber-grating sensing scheme that permits monitoring of lung volume through a real-time measurement of tidal and minute ...single fiber- grating sensor and a monochromatic measurement ...
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Hybrid Fibre Optic Sensor Network for Real-time High Temperature Performance Monitoring of Steel Structures
... a fiber optic sensor network is developed and used to monitor the structural performance of the steel structures in high temperature ...The fiber optic sensor network has the capacity of real-time large ...
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The Design of Bending Long Period of Photonic Crystal Fiber Grating Sensors
... crystal fiber (PCF) is the communication medium of the center core defected and a cladding layer aligned parallel micro-sized cylindrical hole , PCF is strongly dependent on the design details, it is a unique ...
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Sensing characteristics of a novel two-section long-period grating
... The LPG and V groove were carefully cleaned, washed in methanol, then in deionized water, and finally air dried before the immersion of the LPG into a CRI liquid ranging from n s ⫽ 1.300 to n s ⫽ 1.452. This cleaning ...
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Application of long-period-grating sensors to respiratory plethysmography
... the fiber. A curvature sensor consists of the fiber long-period grating laid on a carbon fiber ribbon, which is then encapsulated in a low-temperature curing silicone ...
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Bending and orientational characteristics of long period gratings written in D-shaped optical fiber
... mode fiber was originally designed for coupler ...a period of two ...the fiber to ensure there was no twist in the fiber during fabri- ...Several grating periods were used from 140 to ...
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A long period grating optical fiber sensor with nano assembled porphyrin layers for detecting ammonia gas
... optic long period gratings operating near the phase matching turning point to the deposition of nanostructured coatings, Journal of the Optical Society of America B, 25 (2008) 897– ...
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Design & Analysis the Parameters of Strain based FBG Sensors using Optigrating
... Bragg grating is one of the most key optical components, which are gaining attention in different fields of optical fiber communication and sensing ...A fiber Bragg grating (FBG) is a type of ...
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Cardiac-induced localized thoracic motion detected by a fiber optic sensing scheme
... An optical fiber long period grating (LPG) curvature sensing scheme with a response time of 0.0185 s (data acquisition rate of 54 Hz) is presented in this paper and it is demonstrated that ...
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Optical Fiber Torsion Sensor with Mechanically Induced Long Period Fiber Gratings in Rare Earth Doped Fibers
... mode fiber SMF-28 and an Erbium-doped fiber is ...the fiber is accomplished by putting the fiber in between the two plates, and as can be appreciated from Figure 1, the fiber acquires ...
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On the Validity of the Effective Index Method for Long Period Grating Photonic Crystal Fibers
... of long-period grating (LPG) has had a significant impact on fiber optic ...the fiber. LPG sensor is distinct from other fiber optic sensing techniques such as ...
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Long Period Grating-Based Fiber Coupling to WGM Microresonators for Sensing Applications
... The simulated results suggest that the coupling system can be effectively used for distributed. 339[r] ...
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Graphene oxide coated long period grating based fibre optic humidity sensor
... A B/Ge co-doped photosensitive fibre was exposed to the light from a 248-nm Krypton Fluoride (KrF) excimer laser with a pulse energy of 8 mJ and a pulse frequency of 100 Hz through a metal amplitude mask with a ...
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Index Terms-Fiber Bragg Grating; Reflectivity; Grating length; Effective refractive index of Grating.
... optical fiber communication. Fiber Bragg Grating (FBG) plays an important role in optical fiber ...optical fiber using an intense ultraviolet (UV) source such as a UV ...of ...
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Liquid Resin Infusion process monitoring with embedded superimposed long period and short period Bragg grating sensor.
... The gratings are photo-inscribed in a hydrogen-loaded Corning™ SMF-28 fibre. The photo- inscription of the LPG is made using point per point technique. A CW UV laser beam, operating at 244 nm, is focused on the fibre ...
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COMPENSATION OF DISPERSION IN OPTICAL FIBER USING FIBER BRAGG GRATING (FBG)
... of Fiber Bragg Grating ...using Fiber Bragg Grating at different fiber lengths, we will also analyze the Q-Factor at different fiber ...the Fiber Bragg Grating the ...
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Review of Turn around Point Long Period Fiber Gratings
... Transmission spectra of Long period fiber gratings designed to operate at TAP indicate that any change in SRI causes change in peak at- tenuation at resonant wavelength which opens the[r] ...
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Optical characterisation of a long period grating using liquid droplets on an electrowetting-on-dielectric platform
... of long period gratings (LPGs) fabricated in boron doped germanosilicate single mode ...the grating region of the ...the grating section of the ...
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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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Graphene oxide-coated Long Period Grating-based fibre optic sensor for relative humidity and external refractive index
... the resonance band intensity seen). The temperature change induces a variation in the grating period (by changing its length), and thus creating a shift in the resonance wavelength. The material, in this ...
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