Results 21 to 30 of about 2,867,702 (282)

Self-Referencing Fiber-Optic Intensity Sensors Using Ring Resonators and Fiber Bragg Gratings [PDF]

open access: yes, 2006
An improved ring resonator self-referencing technique in a new reflection configuration for remote fiber-optic intensity sensors is demonstrated using fiber Bragg gratings. Sensor sensitivity doubles and a single fiber lead is used.
Sánchez-Pena, José Manuel   +3 more
core   +2 more sources

New multiplexing scheme for monitoring fiber optic Bragg grating sensors in the coherence domain

open access: yes, 1997
A new multiplexing scheme for monitoring fiber optic Bragg gratings in the coherence domain has been developed. Grating pairs with different grating distances are distributed along a fiber line, and interference between their reflections is monitored ...
Usbeck, K.   +11 more
core   +2 more sources

Fiber-Optic Sensor For The Quality Of Oil And Petroleum Products [PDF]

open access: yesE3S Web of Conferences
The technical characteristics and performance of the equipment depend on the quality of petroleum products. Optical refractometric methods for determining the composition of oil based on refractive indices have become widespread. The main disadvantage of
Murashkina Tatiana   +2 more
doaj   +1 more source

Few-sensory microwave photonic address measuring system for esophageal manometry

open access: yesФизика волновых процессов и радиотехнические системы, 2019
In the modern development of high-resolution manometry, the catheter and its elements are used at various levels of examination and treatment of the patient, both in operative and long-term follow-up systems. Therefore, the approach to the catheter as an
A.F. Agliullin   +9 more
doaj   +1 more source

EXPERIMENTAL COMPARISON OF HOMODYNE DEMODULATION ALGORITHMS FOR PHASE FIBER-OPTIC SENSOR [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
Subject of Research. The paper presents the results of experimental comparative analysis of homodyne demodulation algorithms based on differential cross multiplying method and on arctangent method under the same conditions. The dependencies of parameters
M. N. Belikin   +4 more
doaj   +1 more source

Fiber-optic chemical sensing with Langmuir-Blodgett overlay waveguides [PDF]

open access: yes, 1999
Fiber-optic chemical sensing has been demonstrated with a side-polished single- mode optical fiber, evanescently coupled to chemically sensitive Langmuir- Blodgett (LB) overlay waveguides.
Tatam, Ralph P.   +3 more
core   +1 more source

Report of High Temperature Measurements with a Fabry-Perot Extensometer [PDF]

open access: yesEPJ Web of Conferences, 2020
Fabry-Perot (FP) sensors like other Fiber Optic (FO) sensors may be of particular interest for in pile experiments in MTR with little room available thanks to their compact size.
Cheymol G.   +4 more
doaj   +1 more source

Fabrication and Characterization of a Fiber-optic Radiation Sensor for Detection of Tritium [PDF]

open access: yesKorean Journal of Optics and Photonics, 2009
: Ce, and CsI : Tl to select the most effective sensor tip. In addition, we have measured the scintillating lights using a photomultiplier tube as a function of distance between sensor tips to the source with the different activities of hydride tritium. The final results are compared with those which are obtained using a surface activity monitor.
Kyoung-Won Jang   +7 more
openaire   +1 more source

Radio-frequency ring resonators for self-referencing fiber-optic intensity sensors [PDF]

open access: yes, 2005
A theoretical and experimental study of radiofrequency ring resonators (RR) for referencing and improving the sensitivity of fiber-optic intensity sensors (FOS) is reported.
Contreras Lallana, Pedro   +2 more
core   +1 more source

Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers

open access: yesSensors, 2011
A 2-channel embedded infrared fiber-optic temperature sensor was fabricated using two identical silver halide optical fibers for accurate thermometry without complicated calibration processes.
Bongsoo Lee   +7 more
doaj   +1 more source

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