Results 21 to 30 of about 30,334 (188)

A Self-Referenced Refractive Index Sensor Based on Gold Nanoislands

Sensors, 2022
We report on a self-referenced refractive index optical sensor based on Au nanoislands. The device consists of a random distribution of Au nanoislands formed by dewetting on a planar SiO2/metal Fabry–Pérot cavity.
Carlos Angulo Barrios, Teona Mirea, Miguel Huerga Represa   +2 more
doaj   +1 more source

An arc tangent function demodulation method of fiber-optic Fabry-Perot high-temperature pressure sensor

Photonic Sensors, 2017
A new demodulation algorithm of the fiber-optic Fabry-Perot cavity length based on the phase generated carrier (PGC) is proposed in this paper, which can be applied in the high-temperature pressure sensor. This new algorithm based on arc tangent function
Qianyu Ren, Junhong Li, Yingping Hong, Pinggang Jia, Jijun Xiong   +4 more
doaj   +1 more source

Enhancing the modulation depth of a dynamic terahertz metasurface by integrating into an asymmetric Fabry-Pérot cavity

AIP Advances, 2018
The modulation capability of a terahertz dynamic metasurface was enhanced by integrating it with an asymmetric Fabry-Pérot cavity. The dynamic metasurface consists of split ring resonators combined with high frequency metal semiconductor metal varactors.
Gyejung Lee, Muhammad Tayyab Nouman, Ji Hyun Hwang, Hyun-Woong Kim, Jae-Hyung Jang   +4 more
doaj   +1 more source

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

Sensors, 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, Fuyin Wang, Hong Luo, Qi Wang, Shuidong Xiong   +4 more
doaj   +1 more source

Optimal Design of an Hourglass in-Fiber Air Fabry-Perot Microcavity—Towards Spectral Characteristics and Strain Sensing Technology

Sensors, 2017
An hourglass in-fiber air microcavity Fabry-Perot interferometer is proposed in this paper, and its second reflecting surface of in-fiber microcavity is designed to be a concave reflector with the best curvature radius in order to improve the spectral ...
Qi Wang, Dongchao Yan, Binbin Cui, Zixuan Guo   +3 more
doaj   +1 more source

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

Electronics 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

Diffractive Optics for Gravitational Wave Detectors [PDF]

, 2006
All-reflective interferometry based on nano-structured diffraction gratings offers new possibilities for gravitational wave detection. We investigate an all-reflective Fabry-Perot interferometer concept in 2nd order Littrow mount.
A Bunkowski, A Tünnermann, E-B Kley, K Danzmann, O Burmeister, R Schnabel, Shore B W, Siegman A, Sun K X, T Clausnitzer   +9 more
core   +4 more sources

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

IEEE 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

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

Micromachines, 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, Yasser M. Sabry, Mazen Erfan, Frédéric Marty, Tarik Bourouina   +4 more
doaj   +1 more source

The variable finesse locking technique [PDF]

, 2005
Virgo is a power recycled Michelson interferometer, with 3 km long Fabry-Perot cavities in the arms. The locking of the interferometer has been obtained with an original lock acquisition technique.
A. C., Clapson, A., Brillet, A., Corsi, A., Dari, A., Di Virgilio, A., Eleuteri, A., Gennai, A., Giazotto, A., Masserot, A., Pasqualetti, A., Remillieux, A., Spallicci, A., Toncelli, A., Vicere, B., Dujardin, B., Lopez, B., Mours, C. N., Man, C., Boccara, C., Bradaschia, C., Corda, C., Moins, C., Palomba, C., Tremola, D., Babusci, D., Buskulic, D., Grosjean, D., Passuello, D., Verkindt, E., Calloni, E., Campagna, E., Cesarini, E., Chassande Mottin, E., Cuoco, E., Genin, E., Majorana, E., Tournefier, F., Acernese, F., Antonucci, F., Barone, F., Beauville, F., Bondu, F., Carbognani, F., Cavalier, F., Cleva, F., Cottone, F., Fidecaro, F., Frasconi, F., Garufi, F., Marchesoni, F., Marion, F., Martelli, F., Menzinger, F., Nocera, F., Paoletti, F., Piergiovanni, F., Travasso, F., Vetrano, Frasca, Sergio, G., Ballardin, G., Cella, G., Giordano, G., Guidi, G., Losurdo, G., Russo, Gabriele, Vajente, H., Heitmann, H., Vocca, I., Ferrante, I., Fiori, I., Ricciardi, J. D., Fournier, J. M., Mackowski, J. P., Coulon, J. Y., Vinet, J., Marque, J., Moreau, K., Qipiani, L., Barsotti, L., Bosi, L., Di Fiore, L., Gammaitoni, L., Giordano, L., Milano, L., Pinard, M. A., Bizouard, M., Alshourbagy, M., Barsuglia, M., Davier, M., Del Prete, M., Laval, M., Lorenzini, M., Mantovani, M., Mazzoni, M., Punturo, M., Tarallo, M., Tonelli, M., Yvert, N., Christensen, N., Leroy, N., Letendre, N., Morgado, P., Amico, P., Astone, P., Hello, P., La Penna, P., Puppo, P., Ruggi, R., Cavalieri, R., De Rosa, R., Flaminio, R., Gouaty, R., Passaquieti, R., Poggiani, Rapagnani, Piero, Ricci, Fulvio, S., Aoudia, S., Avino, S., Bigotta, S., Birindelli, S., Braccini, S., Hebri, S., Karkar, S., Kreckelbergh, S., Pardi, S., Solimeno, V., Brisson, V., Dattilo, V., Loriette, V., Reita   +129 more
core   +3 more sources