Results 71 to 80 of about 21,165 (218)

A Dual‐Frequency Sensitivity Model for Optical Fibre Ultrasonic Sensors in Power Transformer Partial Discharge Detection

High Voltage, EarlyView.
ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang, Jihang Sun, Jialin Wang, Bin Wei, Guoming Ma   +4 more
wiley   +1 more source

Observation of interaction-induced modulations of a quantum Hall liquid’s area

Nature Communications, 2016
Quantum Hall liquids play host to a wide range of unusual physics. Here, the authors use an electronic Fabry-Pérot interferometer to observe modulations of a quantum Hall liquid’s area, which can offer a means to study the statistics of fractional ...
I. Sivan, H. K. Choi, Jinhong Park, A. Rosenblatt, Yuval Gefen, D. Mahalu, V. Umansky   +6 more
doaj   +1 more source

A Fabry-Perot interferometer with quantum mirrors: nonlinear light transport and rectification

, 2014
Optical transport represents a natural route towards fast communications, and it is currently used in large scale data transfer. The progressive miniaturization of devices for information processing calls for the microscopic tailoring of light transport ...
Auffèves, A., Fratini, F., Gerace, D., Mascarenhas, E., Poizat, J-Ph., Safari, L., Santos, M. F., Valente, D.   +7 more
core   +3 more sources

A Technique for In-situ Measurement of Free Spectral Range and Transverse Mode Spacing of Optical Cavities [PDF]

, 2012
Length and g-factor are fundamental parameters that characterize optical cavities. We developed a technique to measure these parameters in-situ by determining the frequency spacing between the resonances of fundamental and spatial modes of an optical ...
Abbott, Accadia, Anderson, Araya, Armor, DeVoe, Drever, Elssner, Elssner, Grote, Habraken, Harry, Kuroda, Rakhmanov, Rakhmanov, Redding, Siegman, Sigg, Uehara, Ward, Weinstein, Willke, Ye   +22 more
core   +2 more sources

A Comprehensive Review of Traditional and Machine Learning‐Assisted Diffuse Optical Spectroscopy and Imaging Techniques for Dermatological Applications

Advanced Photonics Research, Volume 7, Issue 5, May 2026.
This review critically examines clinical studies on both conventional and machine learning (ML)‐integrated diffuse optical spectroscopy and imaging methods for dermatological applications, with a primary focus on the past decade and inclusion of earlier foundational work where appropriate.
Iftak Hussain, Li Xiuting, Randall Ang Jie, Keertana Vinod Ram, Mark Teo Ju Teng, Valerie Xinhui Teo, Malini Olivo, U. S. Dinish   +7 more
wiley   +1 more source

Femtosecond Laser Introduced Cantilever Beam on Optical Fiber for Vibration Sensing

Sensors
An all-fiber vibration sensor based on the Fabry-Perot interferometer (FPI) is proposed and experimentally evaluated in this study. The sensor is fabricated by introducing a Fabry-Perot cavity to the single-mode fiber using femtosecond laser ablation ...
Jin Qiu, Zijie Wang, Zhihong Ke, Tianlong Tao, Shuhui Liu, Quanrong Deng, Wei Huang, Weijun Tong   +7 more
doaj   +1 more source

Length Sensing and Control in the Virgo Gravitational Wave Interferometer [PDF]

, 2004
The gravitational wave detector Virgo is presently being commissioned. A significant part of last year was spent in setting up the cavity length control system.
Acernese, F., Amico, P., Aoudia, S., Arnaud, N., Avino, S., Babusci, D., Ballardin, G., Barillé, R., Barone, F., Barsotti, L., Barsuglia, M., Beauville, F., Bizouard, M.A., Boccara, C., Bondu, François, Bosi, L., Braccini, S., Bradaschia, C., Brillet, A., Brisson, V., Broccox, L., Buskulic, D., Calamai, G., Calloni, E., Campagna, E., Cavalier, F., Cavalieri, R., Cella, G., Chassande-Mottin, E., Cleva, F., Coulon, J.-P., Cuoco, E., Dattilo, V., Davier, M., De Rosa, R., Di Fiore, L., Di Virgilio, A., Dujardin, B., Eleuter, A., Enard, D., Ferrante, I., Fidecaro, F., Fiori, I., Flaminio, R., Fournier, J.-D., Frasca, S., Frasconi, F., Freise, A., Gammaitoni, L., Gennai, A., Giazotto, A., Giordano, G., Giordano, L., Gouaty, R., Grosjean, D., Guidi, G., Hebri, S., Heitmann, H., Hello, P., Heusse, P., Holloway, L., Kreckelbergh, S., La Penna, P., Loriette, V., Losurdo, G., Loupias, M., Mackowski, J.-M., Majorana, E., Marchesoni, F., Marion, F., Marque, J., Martelli, F., Masserot, A., Mazzoni, M., Milano, L., Moins, C., Moreau, Julien, Morgado, N., Mours, B., N. Man, C., Pacheco, J., Paix, A., Palomba, C., Paoletti, F., Pardi, S., Pasqualetti, A., Passaquieti, R., Passuello, D., Peirani, S., Perniola, B., Pinard, L., Poggiani, R., Punturo, M., Puppo, P., Qipiani, K., Rapagnani, P., Reita, V., Remillieux, A., Ricci, F., Ricciard, I., Ruggi, P., Russo, G., Solimeno, S., Spallicci, Alessandro D. A. M., Stanga, R., Taddei, R., Tombolato, D., Tournefier, E., Travasso, F., Verkindt, D., Vetrano, F., Viceré, A., Vinet, J.-Y., Vocca, H., Yvert, M.   +114 more
core   +2 more sources

Alignment procedure for the VIRGO Interferometer: experimental results from the Frascati prototype [PDF]

, 1996
A small fixed-mirror Michelson interferometer has been built in Frascati to experimentally study the alignment method that has been suggested for VIRGO. The experimental results fully confirm the adequacy of the method.
Abramovici, Anderson, D Babusci, Drever, Flaminio, G Giordano, G Matone, Giazotto, H Fang, Hough, L Matone, Matone, Morrison, Sampas, V Sannibale   +14 more
core   +3 more sources

Do Eclipse‐Induced Thermospheric TADs Originate From Above or Below?

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Solar eclipses generate significant wave activity in the Earth's upper atmosphere. The source region of eclipse‐induced Traveling Atmospheric Disturbances (TADs) in the upper thermosphere—particularly the relative contributions of gravity waves from the thermosphere itself versus the lower atmosphere—remains unknown. Using the Whole Atmosphere
Yu Jiao, Jing Liu, Shuhan Li, Joseph M. McInerney, Jianyong Li, Yuyan Yang   +5 more
wiley   +1 more source

A squeezed state source using radiation pressure induced rigidity [PDF]

, 2005
We propose an experiment to extract ponderomotive squeezing from an interferometer with high circulating power and low mass mirrors. In this interferometer, optical resonances of the arm cavities are detuned from the laser frequency, creating a ...
David Ottaway, Farid Khalili, H. B. Callen, Nergis Mavalvala, P. Fritschel, Sergey Vyatchanin, Stan Whitcomb, Thomas Corbitt, V. B. Braginsky, W. G. Unruh, Yanbei Chen   +10 more
core   +3 more sources