Results 31 to 40 of about 30,384 (234)

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

Polarisation dynamics of a birefringent Fabry–Perot cavity [PDF]

Applied Physics B, 2018
Optical Fabry-Perot cavities always show a non-degeneracy of two orthogonal polarisation states. This is due to the unavoidable birefringence of dielectric mirrors whose effects are extremely important in Fabry-Perot based high-accuracy polarimeters. We have developed and present here a theory of the polarisation state dynamics in a birefringent Fabry ...
Ejlli, A., Della Valle, F., Zavattini, G.   +2 more
openaire   +6 more sources

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

Alignment of Fabry–Pérot Cavities for Optomechanical Acceleration Measurements

Photonics
The wave optics processes in a Fabry–Pérot cavity with a length of about tens of millimeters are considered. Such cavities are used, among other applications, in optomechanical accelerometers for precise measurement of displacement of moving elements.
Marina Rezinkina, Claus Braxmaier
doaj   +1 more source

High Finesse Fiber Fabry-Perot Cavities: Stabilization and Mode Matching Analysis

, 2016
Fiber Fabry-Perot cavities, formed by micro-machined mirrors on the end-facets of optical fibers, are used in an increasing number of technical and scientific applications, where they typically require precise stabilization of their optical resonances ...
Alavi, Seyed Khalil, Alt, Wolfgang, Gallego, Jose, Ghosh, Sutapa, Martinez-Dorantes, Miguel, Meschede, Dieter, Ratschbacher, Lothar   +6 more
core   +1 more source

Optimizing Vernier Effect Sensitivity Through Smaller Cavity Sensor Design [PDF]

EPJ Web of Conferences
This work demonstrates the sensitivity dependence on the chosen cavity length for the sensor Fabry-Perot interferometer (FPI), where the smaller cavity exhibits a higher magnification factor compared to the situation when the cavity length is larger than
Piaia Vinícius, Robalinho Paulo, Silva Susana, Frazão Orlando   +3 more
doaj   +1 more source

Compact optical fiber photoacoustic gas sensor with integrated multi-pass cell

Photoacoustics, 2023
Optical fiber acoustic sensors with miniature size and high sensitivity are attractive to develop compact photoacoustic spectroscopy. Here, a compact photoacoustic gas sensor was demonstrated by utilizing a diaphragm-based fiber-optic Fabry-Perot cavity ...
Enbo Fan, Haojie Liu, Chao Wang, Jun Ma, Bai-Ou Guan   +4 more
doaj   +1 more source