Results 31 to 40 of about 89,792 (336)

Investigation of photoplethysmographic signals and blood oxygen saturation values obtained from human splanchnic organs using a fiber optic sensor [PDF]

open access: yes, 2011
Objective A reliable, continuous method of monitoring splanchnic organ oxygen saturation could allow for the early detection of malperfusion, and may prevent the onset of multiple organ failure.
AJ Crerar-Gilbert   +16 more
core   +1 more source

Fiber optic sensors [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1984
Over the past several years, many groups have been carrying out research in the area of fiber optic sensor technology, and many types of fiber sensors have been developed. Two of the most promising fiber optic sensor types will be discussed in this talk: phase-modulated single mode interferometric sensors and intensity modulated multimode fiber sensors.
Jacek Jarzynski   +4 more
openaire   +2 more sources

Frequency-Shifted Interferometry — A Versatile Fiber-Optic Sensing Technique

open access: yesSensors, 2014
Fiber-optic sensing is a field that is developing at a fast pace. Novel fiber-optic sensor designs and sensing principles constantly open doors for new opportunities.
Fei Ye, Yiwei Zhang, Bing Qi, Li Qian
doaj   +1 more source

Miniature High-Sensitivity High-Temperature Fiber Sensor with a Dispersion Compensation Fiber-Based Interferometer [PDF]

open access: yes, 2009
A miniature high-sensitivity, high-temperature fiber sensor with an interferometer based on a bare small-core-diameter dispersion compensation fiber (DCF) is reported.
Dong, Bo, Wei, Li, Zhou, Da-Peng
core   +2 more sources

Reviews on Corrugated Diaphragms in Miniature Fiber-Optic Pressure Sensors

open access: yesApplied Sciences, 2019
Corrugated diaphragms (CDs) have been widely used in many fields because of their higher pressure sensitivity and wider linear range compared to flat diaphragms (FDs) in the same circumstances.
Honglin Li   +5 more
doaj   +1 more source

Hollow-Core Fiber-Tip Interferometric High-Temperature Sensor Operating at 1100 °C with High Linearity

open access: yesMicromachines, 2021
Over decades, fiber-optic temperature sensors based on conventional single-mode fibers (SMF) have been demonstrated with either high linearity and stability in a limited temperature region or poor linearity and thermal hysteresis in a high-temperature ...
Zhe Zhang   +7 more
doaj   +1 more source

Preliminary assessment of abdominal organ perfusion utilizing a fiber optic photoplethysmographic sensor [PDF]

open access: yes, 2010
In an attempt to overcome the limitations of current techniques for monitoring abdominal organ perfusion, a prototype reflectance fiber optic photoplethysmographic (PPG) sensor and processing system was evaluated on seventeen anaesthetized patients ...
Hickey, M.   +4 more
core   +1 more source

Studies on Temperature and Strain Sensitivities of a Few-mode Critical Wavelength Fiber Optic Sensor [PDF]

open access: yes, 2018
This paper studied the relationship between the temperature/strain wavelength sensitivity of a fiber optic in-line Mach-Zehnder Interferometer (MZI) sensor and the wavelength separation of the measured wavelength to the critical wavelength (CWL) in a CWL-
Dong, X.   +5 more
core   +1 more source

Dissolved oxygen sensing using an optical fibre long period grating coated with hemoglobin [PDF]

open access: yes, 2016
A long period grating fiber optic sensor coated with hemoglobin is used to detect dissolved oxygen. The sensitivity of this sensor to the ratio of dissolved carbon dioxide to dissolved oxygen is demonstrated via the conversion of carboxyhemoglobin to
James, Stephen W.   +2 more
core   +1 more source

Theoretical Analysis of the Optical Propagation Characteristics in a Fiber-Optic Surface Plasmon Resonance Sensor

open access: yesSensors, 2013
Surface plasmon resonance (SPR) sensor is widely used for its high precision and real-time analysis. Fiber-optic SPR sensor is easy for miniaturization, so it is commonly used in the development of portable detection equipment.
Xiaolin Zheng   +5 more
doaj   +1 more source

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