Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Stephen T. Kreger"'
Autor:
Martynas Beresna, Ali Masoudi, Jaewon Park, Derek Rountree, Andrei Donko, Stephen T. Kreger, Gilberto Brambilla
Publikováno v:
Optical Fiber Sensors Conference 2020 Special Edition.
Acoustics can be sensed with high spatial resolution by analyzing fiber Rayleigh scatter with optical frequency domain reflectometry, but signal-to-noise levels are low. Writing an array of discrete reflectors in fiber with a fs-pulsed laser increase
Publikováno v:
Fiber Optic Sensors and Applications XVI.
Autor:
Minh A. Tran, Brian J. Soller, Daniel Kominsky, John E. Bowers, Stephen T. Kreger, Tin Komljenovic, Anastasia A. Yakusheva, Osgar John Ohanian
Publikováno v:
26th International Conference on Optical Fiber Sensors.
Implementing Optical Frequency Domain Reflectometry (OFDR) in integrated photonic circuits will enable new applications of high-definition fiber optic sensing in aerospace fields where size, weight, and power are critical constraints.
Autor:
Osgar John Ohanian, Emily H. Templeton, Matthew A. Davis, Dan Kominski, James W. Jeans, Naman Garg, J. R. Pedrazzani, Stephen T. Kreger, Matthew A. Castellucci, Nur Aida Abdul Rahim, Noah Beaty
Publikováno v:
SPIE Proceedings.
Optical Frequency Domain Reflectometry (OFDR) is the basis of an emerging high-definition distributed fiber optic sensing (HD-FOS) technique that provides an unprecedented combination of resolution and sensitivity. We examine aerospace applications t
Autor:
Stephen T. Kreger, Sandra M. Klute, James W. Jeans, Naman Garg, Robert Gamber, Noah Beaty, Daniel R. Metrey, Nur Aida Abdul Rahim
Publikováno v:
SPIE Proceedings.
Optical Frequency Domain Reflectometry (OFDR) is the basis of an emerging high-definition distributed fiber optic sensing (HD-FOS) technique that provides an unprecedented combination of resolution and sensitivity. OFDR employs swept laser interferom
Publikováno v:
IEEE Sensors Journal. 12:55-63
Simple, circular loops in a single optical fiber bonded to a metal test sample are used to form multiple strain gauge rosettes. Strain measurements are made using an optical backscatter reflectometer to detect changes in the phase of the Rayleigh Sca
Publikováno v:
SPIE Proceedings.
Luna recently demonstrated a novel optical phase-based algorithm for removing the adverse effects of fiber motion at frequencies far above the scan rate on high-resolution measurements of Rayleigh scatter using Optical Frequency Domain Reflectometry
Autor:
Joseph J. Bos, Matthew A. Davis, Jason Chevalier, Nur Aida Abdul Rahim, Luke Routhier, Stephen T. Kreger, Eric Sanborn
Publikováno v:
53rd AIAA Aerospace Sciences Meeting.
Publikováno v:
SPIE Newsroom.
Publikováno v:
SPIE Proceedings.
Fiber-optic ultrasonic transducers are an important component of an active ultrasonic testing system for structural health monitoring. Fiber-optic transducers have several advantages such as small size, light weight, and immunity to electromagnetic i