Fiber-optic array streak-camera coupled diagnostics in use at the Z accelerator record single point, one-, or two-dimensional data from z-pinch plasmas

2002 ◽  
Author(s):  
S. Lazier ◽  
M. Bernard ◽  
M. Derzon ◽  
C. Hall ◽  
J. Torres
Keyword(s):  
Fiber Optic ◽  
Streak Camera ◽  
Single Point ◽  
Two Dimensional ◽  
Optic Array ◽  
Z Pinch

Seismic Observations of Four Thunderstorms Using an Underground Fiber-Optic Array

2021 ◽  
Author(s):  
Samuel Hone ◽  
Tieyuan Zhu
Keyword(s):  
Fiber Optic ◽  
Seismic Velocity ◽  
Ground Surface ◽  
State College ◽  
Full Waveform ◽  
Penn State ◽  
Distributed Acoustic Sensing ◽  
Back Azimuth ◽  
Optic Array ◽  
The Waves

Abstract Thunderstorms are a common atmospheric phenomenon that cause abundant acoustic disturbances, which can interact with the ground surface, creating a link between atmospheric and solid Earth processes. This article reports seismological observations of four thunderstorms through the spring and summer of 2019, as recorded by the distributed acoustic sensing fiber-optic array (4.9 km) on the Penn State campus in State College, Pennsylvania. With a dense sensor array in the local region, we are able to construct the seismic full waveform response of the thunderstorm events (hereafter referred to as thunderquakes) and track the wave propagation across the array. We use a time-domain grid search to obtain the back azimuth and slowness of the waves, and a modified Geiger’s method to pinpoint source locations of the thunderquakes. Correlated with the time of the recorded signal, this data allows reconstruction of thunderstorm movement as well as offering measurements of the seismic velocity.

A Conformable Two-Dimensional Resistance Temperature Detector for Measuring Average Skin Temperature

2021 ◽  
Author(s):  
Laura Namisnak ◽  
Sepideh Khoshnevis ◽  
Kenneth R. Diller
Keyword(s):  
Surface Temperature ◽  
Skin Temperature ◽  
Infrared Thermography ◽  
Single Point ◽  
Wearable Sensors ◽  
Two Dimensional ◽  
Nonuniform Temperature ◽  
Resistance Temperature Detector ◽  
Temperature Detector ◽  
Average Skin

Abstract Various medical procedures are accomplished by manipulating skin temperature in a nonuniform pattern. Skin temperature monitoring is essential to assess conformance to protocol specifications and to prevent thermal injury. Existing solutions for skin temperature monitoring include single point sensors, such as thermocouples, and two-dimensional methods of sensing surface temperature, such as infrared thermography, and wearable technology. Single point sensors cannot detect the average temperature and consequently their measurements cannot be representative of average surface temperature in a nonuniform temperature field. Infrared thermography requires optical access, and wearable sensors may require complex manufacturing processes and impede the heat exchange with a source by introducing a layer of insulation. Our solution is a two-dimensional resistance temperature detector (2D RTD) created by knitting copper magnet wire into custom shapes. The 2D RTDs were calibrated, compared to one-dimensional sensors and wearable sensors, and analyzed for hysteresis, repeatability, and surface area conformation. Resistance and temperature were correlated with an R2 of 0.99. The 2D RTD proved to be a superior device for measuring average skin temperature exposed to a nonuniform temperature boundary in the absence of optical access such as when a full body thermal control garment is worn.

scholarly journals Addition of Illuminator Fiber Optic to Produce 3 Dimension Effects in Micrographic Observation Using Upright Microscope

2020 ◽  
Vol 3 ◽  
pp. 493-496
Author(s):  
Sutriyono ◽  
Widodo ◽  
Retno Suryandari
Keyword(s):  
Optical Fiber ◽  
Experimental Method ◽  
Daphnia Magna ◽  
High Intensity ◽  
Fiber Optic ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Three Dimensional Objects ◽  
Stereo Microscope ◽  
Total Magnification

Microscope is one of the tools used in practicums with high intensity. The use of a microscope adjusts to the object to be observed in order to obtain optimal micrographic results. Stereo microscopes are used to observe three-dimensional objects. Upright microscopes are used to observe two-dimensional objects. This study aims to combine the two advantages of stereo microscopy that can produce three-dimensional micrography with the advantages of an upright microscope that has a high total magnification. The method used in this study is an experimental method by adding an optical fiber illuminator in the use of an upright microscope and then applying it in various observations. The conclusion of this research is the addition of an optical fiber illuminator in observations using an upright microscope can replace the function of a stereo microscope; can produce three-dimensional effects and increase magnification in Daphnia magna micrographic observations.

Fiber-Optic Array Biosensors

2008 ◽  
Author(s):  
Rahela Ga��parac ◽  
David R. Walt
Keyword(s):  
Fiber Optic ◽  
Optic Array

Compressed-sensing two-dimensional rotating-mirror streak camera for single-shot ultrahigh-speed optical imaging

2021 ◽  
Author(s):  
Xianglei Liu ◽  
Jingdan Liu ◽  
Cheng Jiang ◽  
Fiorenzo Vetrone ◽  
Jinyang Liang
Keyword(s):  
Compressed Sensing ◽  
Optical Imaging ◽  
Streak Camera ◽  
Single Shot ◽  
Two Dimensional

scholarly journals Holographic pixel super-resolution in portable lensless on-chip microscopy using a fiber-optic array

Lab on a Chip ◽  
2011 ◽  
Vol 11 (7) ◽  
pp. 1276 ◽  
Author(s):  
Waheb Bishara ◽  
Uzair Sikora ◽  
Onur Mudanyali ◽  
Ting-Wei Su ◽  
Oguzhan Yaglidere ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Super Resolution ◽  
On Chip ◽  
Optic Array

scholarly journals Two-Dimensional Constellation Shaping in Fiber-Optic Communications

2019 ◽  
Vol 9 (9) ◽  
pp. 1889 ◽  
Author(s):  
Zhen Qu ◽  
Ivan B. Djordjevic ◽  
Jon Anderson
Keyword(s):  
Optical Communication ◽  
Gaussian Noise ◽  
Communication Systems ◽  
Fiber Optic ◽  
Two Dimensional ◽  
Fiber Optic Communications ◽  
System Architectures ◽  
Recent Advances ◽  
Constellation Shaping ◽  
Optical Communication Systems

Constellation shaping has been widely used in optical communication systems. We review recent advances in two-dimensional constellation shaping technologies for fiber-optic communications. The system architectures that are discussed include probabilistic shaping, geometric shaping, and hybrid probabilistic-geometric shaping solutions. The performances of the three shaping schemes are also evaluated for Gaussian-noise-limited channels.

Imaging Spectroscopy Using Fiber Optics

1997 ◽  
Vol 3 (S2) ◽  
pp. 845-846
Author(s):  
S. Michael Angel ◽  
H. Trey Skinner ◽  
Brian J. Marquardt
Keyword(s):  
Optical Fiber ◽  
Fiber Optics ◽  
Optical Fibers ◽  
Fiber Optic ◽  
Imaging System ◽  
Single Point ◽  
Imaging Spectroscopy ◽  
Small Diameter ◽  
Imaging Spectrometer ◽  
Remote Spectroscopy

Optical fiber probes are routinely used with optical spectrometers to allow measurements to be made on remotely located samples. In most of these systems, however, the optical fibers are used as non-imaging “light pipes” for the transmission of laser light, and luminescence or Raman signals to and from the sample. Thus, while these systems are suitable for remote spectroscopy, they are limited to single-point measurements. In a recent paper, we showed that a small-diameter (i.e., 350 μm) coherent optical fiber bundle can be combined with an AOTF-based imaging spectrometer for fluorescence and Raman spectral micro-imaging with increased flexibility in terms of sample positioning and in-situ capabilities. The previous paper described the operation of the fiber-optic microimaging probe and AOTF imaging system and showed preliminary Raman and fluorescence images for model compounds with 4 μm resolution. We have extended this work to include a discussion of the lateral and vertical spatial resolution of the fiber-optic microprobe in a non-contact proximity-focused configuration.

A liquid level sensor based on fiber optic array and magnetic coupling

2012 ◽  
Author(s):  
Wei He ◽  
Xuan Yu ◽  
Chenggang Wang ◽  
Cui Zhang ◽  
Bo Feng ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Magnetic Coupling ◽  
Liquid Level ◽  
Level Sensor ◽  
Optic Array ◽  
Liquid Level Sensor
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