Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Chung E. Lee"'
Publikováno v:
Journal of the Optical Society of Korea. 2:74-79
The use of a fiber Fabry-Perot interferometer (FFPI) as an optical current transducer is demonstrated. A conventional inductive pickup coil converts the time-varying current I(t) being measured to a voltage waveform V(t) applied across a piezeolectri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e67947b078c0146ee0fa80d06fcbed91
https://doi.org/10.3807/josk.1998.2.2.074
https://doi.org/10.3807/josk.1998.2.2.074
Publikováno v:
World Pumps. 1996:28-33
A vibration monitoring program is a common means of protecting mechanical equipment from catastrophic failures. For critical pumps handling highly flammable or toxic fluids, prudent operation also requires users to monitor pressure pulsations as a me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::280aaeed698b2c91054060dc7e15fc1c
https://doi.org/10.1016/s0262-1762(99)81032-3
https://doi.org/10.1016/s0262-1762(99)81032-3
Autor:
Chung E. Lee, V. P. Swenson, Jongseo Lee, Henry F. Taylor, Craig Henderson, Wanku Lee, William GeMeiner, Ray W. James, Robert A. Atkins
Publikováno v:
Applied optics. 38(7)
Fiber-optic sensors were installed on fatigue-critical components in the superstructure of a railroad bridge to monitor dynamic strains induced by trains crossing the bridge as well as to detect the onset of cracks. Each fiber Fabry–Perot interfero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::167d2677bc4b637d8780997114a9972a
https://pubmed.ncbi.nlm.nih.gov/18305719
https://pubmed.ncbi.nlm.nih.gov/18305719
Publikováno v:
Optics letters. 22(23)
A temperature-sensor system based on low-coherence interferometry with a fiber Mach-Zehnder interferometer as a phase modulator was implemented. A measurement range of 20 to 800 degrees C with a resolution of 0.025 degrees C (corresponding to 0.0004
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::359eadfdc2ef83a671644088460929df
https://pubmed.ncbi.nlm.nih.gov/18188375
https://pubmed.ncbi.nlm.nih.gov/18188375
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 8:3247-3250
The use of an optical fiber Fabry–Perot interferometric temperature sensor for monitoring substrate temperature in a rf sputtering system is demonstrated. The sensor head consists of a continuous length of single mode silica fiber which contains tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc1971970feba07346b5f10e3c666cb4
https://doi.org/10.1116/1.576572
https://doi.org/10.1116/1.576572
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 37:302-306
A fiber-optic ultrasound sensor is presented. The sensor consists of a continuous length of single-mode optical fiber with a built-in Fabry-Perot interferometer. The acoustic pressure produces changes in the index of refraction along the interferomet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e596fd6caed067e31104017f60c79249
https://doi.org/10.1109/58.56491
https://doi.org/10.1109/58.56491
Publikováno v:
8th Optical Fiber Sensors Conference.
Operation of fiber Fabry-Perot interferoineter (FFPI) temperature sensors from -200°C to +10500C has been demonstrated [1]. These sensors used internal mirrors produced by a fusion splicing technique. Internal-mirror FFPIs have been embedded in grap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bb6adb5f7c3850e72b6a632de5877bb
https://doi.org/10.1109/ofs.1992.762972
https://doi.org/10.1109/ofs.1992.762972
Publikováno v:
Applied optics. 44(9)
Bar-code patterns were produced upon gold-coated glass spheres 8 mm in diameter with a novel projection photolithography exposure system that included a computer-controlled rotation stage-and-shutter arrangement. The patterns extended in an equatoria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d125348688025df888d72c8424f6ae6c
https://pubmed.ncbi.nlm.nih.gov/15813254
https://pubmed.ncbi.nlm.nih.gov/15813254
Autor:
Chung E. Lee
Publikováno v:
Sixth Pacific Northwest Fiber Optic Sensor Workshop.
This paper introduces the application of commercial FFPI (Fiber Fabry-Perot Interferometer) sensors to harsh environmental machinery monitoring (temperature up to 400°C). Examples of dynamic pressure, temperature, vibration, rotational speed and bea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::337ad641e36206703cda4166842ab9ab
https://doi.org/10.1117/12.544375
https://doi.org/10.1117/12.544375
Publikováno v:
IEEE Photonics Technology Letters. 2:382-384
Signal storage in a single-mode optical fiber with programmable time delay is described. The reflectivity monitored delay line contains three Fabry-Perot interferometers arranged in serial fashion. By thermally tuning two of the interferometers for n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc58646c842303af1e7fe4c292a2f90e
https://doi.org/10.1109/68.54713
https://doi.org/10.1109/68.54713