Multi-parameter sensors
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Optical micro-wire flow-velocity sensor
This paper presents a short response time, all-silica, gas-flow-velocity sensor. The active section of the sensor consists of a 16 µm diameter, highly optically absorbing micro-wire, which is heated remotely by a 980 nm light…
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Fiber-optic boiling point sensor for characterization of liquids
In this paper, an optical fiber sensor is proposed for measurement of the boiling point and boiling range of liquids. Since boiling point and/or boiling range of liquids correlate directly to chemical composition of liquids,…
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Miniature all-fiber force sensor
A miniature all-fiber Fabry–Perot sensor for measurement of force is presented in this Letter. The sensor consists of a thin silica diaphragm created at the tip of the fiber. The central part of the diaphragm…
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A miniature fabry perot sensor for twist/rotation, strain and temperature measurements based on a four-core fiber
In this article, a novel miniature Fabry-Perot twist/rotation sensor using a four core fiber and quadruple interferometer setup is presented and demonstrated. Detailed sensor modeling, analytical evaluation and test measurement assessment were conducted in this…
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Multiparameter miniature fiber-optic sensor : design and signal interrogation
Miniature, all-silica, fiber-optic sensors capable of independent measurement of at least two different parameters arepresented. Sensors were produced by a micromachining process based on the selective etching of specially designed phosphorous-doped optical fibers and an…
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Multiparameter fiber-optic sensor for simultaneous measurement of thermal conductivity, pressure, refractive index, and temperature
This paper presents a miniature, all-silica four/multiparameter sensor for simultaneous measurements of thermal conductivity, pressure, refractive index, and temperature of gases. The sensor is composed of multiple Fabry-Perot interferometers (FPIs) that were created at the…
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Micromachining of all-fiber photonic micro- structures for microfluidic applications
Maskless micromachining of all-fiber photonics structures, based on the selective etching of structure forming optical fibers (SFF) is presented. A maskless micromachining process can reform or reshape a section of an optical fiber into a…
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High resolution, all-fiber, micro-machined sensor for simultaneous measurement of refractive index and temperature
This paper presents a highly-sensitive, miniature, all-silica, dual parameter fiber-optic Fabry-Perot sensor, which is suitable for independent measurement of the refractive index and the temperature of the fluid surrounding the sensor. The experimental sensor was…
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Miniature all-fiber Fabry-Perot sensor for simultaneous measurement of pressure and temperature
This article presents a miniature, high-sensitivity, all-silica Fabry-Perot fiber-optic sensor suitable for simultaneous measurements of pressure and temperature. The proposed sensor diameter does not exceed 125 µm and consists of two low-finesse Fabry-Perot resonators created…