Results 31 to 40 of about 453,948 (232)

A 3D printed metallized Fabry–Perot cavity antenna with improved bandwidth and low side‐lobe levels

open access: yesElectronics Letters, 2021
A 3D printed metallized Fabry–Perot cavity antenna centred at 5.8 GHz is presented in this letter. A non‐uniform grid superstrate and a choke groove are employed in the Fabry–Perot cavity antenna to improve the input bandwidth and decrease the side lobes.
Ke Xu, Lin Zhou, Bing Zhang, Xing Chen
doaj   +1 more source

A Magnetic Field Sensor Based on a Magnetic Fluid-Filled FP-FBG Structure

open access: yesSensors, 2016
Based on the characteristic magnetic-controlled refractive index property, in this paper, a magnetic fluid is used as a sensitive medium to detect the magnetic field in the fiber optic Fabry-Perot (FP) cavity.
Ji Xia   +4 more
doaj   +1 more source

Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell

open access: yesPhotoacoustics, 2023
Optical fiber acoustic sensors with miniature size and high sensitivity are attractive to develop compact photoacoustic spectroscopy. Here, a compact photoacoustic gas sensor was demonstrated by utilizing a diaphragm-based fiber-optic Fabry-Perot cavity ...
Enbo Fan   +4 more
doaj   +1 more source

Pressure and Temperature Sensor Based on Fiber-Optic Fabry-Perot Interferometer by Phase Demodulation

open access: yesIEEE Access, 2019
A phase demodulation of dual-cavity fiber-optic Fabry-Perot interferometer based on open-cavity and silica-cavity was proposed and experimentally demonstrated for pressure and temperature sensing. In contrast to the commonly used wavelength demodulation,
Delin Zhao, Yongfeng Wu, Jing Wu
doaj   +1 more source

Alignment of Fabry–Pérot Cavities for Optomechanical Acceleration Measurements

open access: yesPhotonics
The wave optics processes in a Fabry–Pérot cavity with a length of about tens of millimeters are considered. Such cavities are used, among other applications, in optomechanical accelerometers for precise measurement of displacement of moving elements.
Marina Rezinkina, Claus Braxmaier
doaj   +1 more source

High-Q Fabry–Pérot Micro-Cavities for High-Sensitivity Volume Refractometry

open access: yesMicromachines, 2018
This work reports a novel structure for a Fabry–Pérot micro cavity that combines the highest reported quality factor for an on-chip Fabry–Pérot resonator that exceeds 9800, and a very high sensitivity for an on-chip volume refractometer based on a Fabry ...
Noha Gaber   +4 more
doaj   +1 more source

Analytical method to find the optimal parameters for gas detectors based on correlation spectroscopy using a Fabry-Perot interferometer [PDF]

open access: yes, 2007
Several designs of infrared sensors use a Fabry-Perot Interferometer (FPI) to modulate the incident light. In this work we analyse the particular case where the FPI fringes are matched with very well defined ro-vibrational absorption lines of a target ...
Rutt, Harvey N.   +1 more
core   +1 more source

Optical torques in the folding Fabry–Perot cavity

open access: yesPhysics Letters A
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xingrui Peng   +3 more
openaire   +2 more sources

Short pulse generation with 40 GHz passively-mode locked Q-dashed Fabry-Pérot laser [PDF]

open access: yes, 2009
Generation of sub-picosecond pulses by a DC-biased passively mode-locked Fabry-Perot laser is demonstrated. By using a tunable band-pass filter, it is observed that the width of the generated pulses decreases in direct proportion to the optical modes ...
Latkowski, Sylwester   +5 more
core   +3 more sources

Optimizing Vernier Effect Sensitivity Through Smaller Cavity Sensor Design [PDF]

open access: yesEPJ Web of Conferences
This work demonstrates the sensitivity dependence on the chosen cavity length for the sensor Fabry-Perot interferometer (FPI), where the smaller cavity exhibits a higher magnification factor compared to the situation when the cavity length is larger than
Piaia Vinícius   +3 more
doaj   +1 more source

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