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Title: A metal-ceramic coaxial cable Fabry-Pérot microwave interferometer for monitoring fluid dielectric constant

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1412565
Grant/Contract Number:
FE0022993
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Sensors and Actuators. A, Physical
Additional Journal Information:
Journal Volume: 257; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-12-09 02:08:03; Journal ID: ISSN 0924-4247
Publisher:
Elsevier
Country of Publication:
Switzerland
Language:
English

Citation Formats

Zeng, Shixuan, Trontz, Adam, Zhu, Wenge, Xiao, Hai, and Dong, Junhang. A metal-ceramic coaxial cable Fabry-Pérot microwave interferometer for monitoring fluid dielectric constant. Switzerland: N. p., 2017. Web. doi:10.1016/j.sna.2017.02.004.
Zeng, Shixuan, Trontz, Adam, Zhu, Wenge, Xiao, Hai, & Dong, Junhang. A metal-ceramic coaxial cable Fabry-Pérot microwave interferometer for monitoring fluid dielectric constant. Switzerland. doi:10.1016/j.sna.2017.02.004.
Zeng, Shixuan, Trontz, Adam, Zhu, Wenge, Xiao, Hai, and Dong, Junhang. Sat . "A metal-ceramic coaxial cable Fabry-Pérot microwave interferometer for monitoring fluid dielectric constant". Switzerland. doi:10.1016/j.sna.2017.02.004.
@article{osti_1412565,
title = {A metal-ceramic coaxial cable Fabry-Pérot microwave interferometer for monitoring fluid dielectric constant},
author = {Zeng, Shixuan and Trontz, Adam and Zhu, Wenge and Xiao, Hai and Dong, Junhang},
abstractNote = {},
doi = {10.1016/j.sna.2017.02.004},
journal = {Sensors and Actuators. A, Physical},
number = C,
volume = 257,
place = {Switzerland},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.sna.2017.02.004

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  • Metal-ceramic coaxial cable Fabry-Pérot interferometric (MCCC-FPI) sensors have been developed using a stainless steel tube and a stainless steel wire as the outer and inner conductors, respectively; a tubular α-alumina insulator; and a pair of air gaps created in the insulator along the cable to serve as weak reflectors for the transmitting microwave (MW) signal. The MCCC-FPI sensors have been demonstrated for high temperature measurements using MW signals in a frequency range of 2–8 GHz. The temperature measurement is achieved by monitoring the frequency shift (Δƒ) of the MW interferogram reflected from the pair of weak reflectors. The MW sensormore » exhibited excellent linear dependence of Δƒ on temperature; small measurement deviations (±2.7%); and fast response in a tested range of 200–500 °C. The MCCC has the potential for further developing multipoint FPI sensors in a single-cable to achieve in situ and continuous measurement of spatially distributed temperature in harsh environments.« less
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  • We report on a method for real-time dynamic calibration of a tunable external cavity diode laser by using a partially mode-matched plano-concave Fabry-Pérot interferometer in reflection geometry. Wide range laser frequency scanning is carried out by piezo-driven tilting of a diffractive grating playing the role of a frequency selective mirror in the laser cavity. The grating tilting system has a considerable mechanical inertness, so static laser frequency calibration leads to false results. The proposed real-time dynamic calibration based on the identification of primary- and Gouy-effect type secondary interference peaks with known frequency and temporal history can be used for amore » wide scanning range (from 0.2 GHz to more than 1 GHz). A concave spherical mirror with a radius of R = 100 cm and a plain 1% transmitting mirror was used as a Fabry-Pérot interferometer with various resonator lengths to investigate and demonstrate real-time calibration procedures for two kinds of laser frequency scanning functions.« less
  • A far-infrared reflectivity set up has been developed for spectroscopy on highly reflective materials in a 20 T-class resistive Bitter magnet. As a first application, far-infrared reflectivity measurements on the heavy-fermion compound URu{sub 2}Si{sub 2} have been performed using a silicon reflection Fabry-P{acute e}rot interferometer as a multiple reflection device. In a resonance, this Fabry-P{acute e}rot technique is one order of magnitude more sensitive than a single reflection measurement. Changes in the reflectivity as a function of magnetic field are resolved with an accuracy of 0.2% and the absolute value of the reflectivity can be obtained with an accuracy ofmore » 0.5%. With this interferometer, an excitation at about 40 cm{sup -1} in the heavy-fermion system URu{sub 2}Si{sub 2} is investigated at temperatures between 2 and 20 Kelvin and in magnetic fields up to 20 T. The excitation appears to extend to lower energies under influence of a large magnetic field. {copyright} {ital 1996 American Institute of Physics.}« less