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In this paper, we present a tilted fiber Bragg gratings (TFBG) based surface Plasmon resonance (SPR) labelfree sensors with boronic acid derivative (ABA-PBA) as receptor molecule to detect glycoprotein with high sensitivity and selectivity. Tilted fiber Bragg gratings (TFBG) as a near infrared wavelengths detecting element can be able to excite a number of cladding modes whose properties can be detected...
Fiber optic sensors are potential techniques for diagnosis of coronary artery disease by measuring the blood pressure difference across a coronary artery stenosis. However, there is no available packaging method to accelerate the commercialization of the device from academic research. Obstacles that hinder the direct use of fiber optic sensors for this biomedical application were analyzed in this...
A novel fiber-optic sensor based on Bragg gratings in standard and grapefruit microstructured fibers (GMF) for simultaneous measurement of temperature and hydrostatic pressure is proposed and experimentally demonstrated. The temperature responses of these two gratings are almost the same due to the similar material composition in the core. The existence of large air holes in the cladding of GMF makes...
MOEMS (Micro-Opto-Electro-Mechanical Systems) acoustic sensors are employed to detect acoustic emissions (AE) for Structural Health Monitoring (SHM). Acoustic sensing cantilevers (~200 × 100 × 50 μm) with variable frequency response, directionality and dynamic range can be fabricated in large quantity using a novel non-silicon process. The packaged sensors are low-cost,...
Using magnetostrictive material as sensing elements, Combined with multi-beam interference phase detection measurement of the weak magnetic field. Based on the Jiles-Atherton model, the selected magnetostrictive material piezomagnetic equation and the relationship between the magnetostrictive material's strain and the magnetic field strength are derived, the coupling theory of Young's modulus between...
We report on fiber Bragg gratings in all-solid photonic bandgap fiber that composed of a triangular array of high-index Ge-doped rods in pure silica background with fluorine-doped index-depressed layer surrounding the Ge-doped rod. Fiber Bragg gratings were photowritten with 193 nm ArF excimer laser and characterized for their response to strain, temperature, bending and torsion. These gratings couple...
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