Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Haniel Gabai"'
Publikováno v:
Optics letters. 42(21)
Distributed acoustic sensing (DAS) via optical fibers makes use of Rayleigh backscattering for the detection of acoustic waves that interact with the fiber along its entire length. The random nature of Rayleigh backscattering leads to nonuniform perf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5f36809b8f8fdc322c103ffdae394f3
https://pubmed.ncbi.nlm.nih.gov/29088205
https://pubmed.ncbi.nlm.nih.gov/29088205
Autor:
Avishay Eyal, Haniel Gabai
Publikováno v:
SPIE Proceedings.
In Rayleigh-scattering-based Distributed Acoustic Sensing (DAS) an optical fiber is transformed into an array of thousands of ‘virtual microphones’. This approach has gained tremendous popularity in recent years and is one of the most successful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12f971855fc985d3d6de4f5c4a0bf306
https://doi.org/10.1117/12.2265527
https://doi.org/10.1117/12.2265527
Publikováno v:
SPIE Proceedings.
Coherent fading noise (also known as speckle noise) affects the SNR and sensitivity of Distributed Acoustic Sensing (DAS) systems and makes them random processes of position and time. As in speckle noise, the statistical distribution of DAS SNR is pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa5a87d8461a2905427056798355ce77
https://doi.org/10.1117/12.2272458
https://doi.org/10.1117/12.2272458
Publikováno v:
Journal of Biophotonics. 7:624-630
We propose to establish a cancer biomarker based on the unique optical-mechanical signatures of cancer cells measured in a noncontact, label-free manner by optical interferometry. Using wide-field interferometric phase microscopy (IPM), implemented b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d7da4717260d61846037293a61d4a49
https://doi.org/10.1002/jbio.201300019
https://doi.org/10.1002/jbio.201300019
Publikováno v:
SPIE Proceedings.
The field of Optical Fiber Sensors (OFS) is gaining tremendous popularity in recent years. OFS natural immunity to electromagnetic disturbances, inherent biocompatibility and compactness making them highly attractive for ultrasound sensing. Moreover,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb0e57799319379c484d8c24b1092f23
https://doi.org/10.1117/12.2209455
https://doi.org/10.1117/12.2209455
Autor:
Avishay Eyal, Haniel Gabai
Publikováno v:
Asia Pacific Optical Sensors Conference.
In distributed acoustic sensing the SNR of each sensor varies randomly along the fiber and is affected by propagation losses. We introduce a new method for enhancing and equalizing the SNR via digital means only.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9021b38540c048c7bf88ab533bd27da
https://doi.org/10.1364/apos.2016.th3a.7
https://doi.org/10.1364/apos.2016.th3a.7
Publikováno v:
Optics Express. 26:17690
Distributed acoustic sensing (DAS) via fiber-optic reflectometry techniques is finding more and more applications in recent years. In many of these applications, the position of detected acoustic or seismic sources is defined with a single longitudin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::305945d80c62427c2dedecf6ae1561cd
https://doi.org/10.1364/oe.26.017690
https://doi.org/10.1364/oe.26.017690
Publikováno v:
SPIE Proceedings.
Cumulative acoustically-induced phase modulation along the sensing fiber significantly degrades the performance of Optical Frequency Domain Reflectometry (OFDR) systems. Here we present a new method to mitigate this phenomenon using hybrid time-frequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1088c066e5e70c99eabe73735a8f00b6
https://doi.org/10.1117/12.2194873
https://doi.org/10.1117/12.2194873
Publikováno v:
SPIE Proceedings.
Fiber ultrasound (US) sensing is gaining popularity in recent years. Unique characteristics such as immunity to electromagnetic interference and embedding compatibility makes them advantageous in many applications. Multiplexing of US fiber sensors, h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bff60bd073facf2f1c97e975e8e7a5d
https://doi.org/10.1117/12.2194586
https://doi.org/10.1117/12.2194586
Publikováno v:
SPIE Proceedings.
In traditional OFDR systems, the backscattered profile of a sensing fiber is inefficiently duplicated to the negative band of spectrum. In this work, we present a new OFDR design and algorithm that remove this redundancy and make use of negative beat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5368fd36b8472f9c2d06e1fcd0172b9
https://doi.org/10.1117/12.2184154
https://doi.org/10.1117/12.2184154