Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Meredith N. Hutchinson"'
Autor:
Caitlin R. S. Williams, Meredith N. Hutchinson, Joseph D. Hart, Marriner H. Merrill, Peter Finkel, William R. Pogue III, Geoffrey A. Cranch
Publikováno v:
APL Photonics, Vol 5, Iss 3, Pp 030803-030803-10 (2020)
Detection and location of the source of acoustic emission in a thin aluminum panel is demonstrated using a multichannel fiber laser sensor system. Acoustic emission generated by a crack in an aluminum panel used as a test coupon in an accelerated fat
Externí odkaz:
https://doaj.org/article/62e41de0726a4a089fd156036bd25c16
Autor:
Yue Hu, Curtis R. Menyuk, Xiaojun Xie, Meredith N. Hutchinson, Vincent J. Urick, Joe C. Campbell, Keith J. Williams
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 2, Pp 1-11 (2017)
We calculate the amplitude-to-phase (AM-to-PM) noise conversion in a modified unitraveling carrier photodetector. We obtained two nulls as measured in the experiments, and we explain their origin. The nulls appear due to the transit time variation wh
Externí odkaz:
https://doaj.org/article/cc0c099f74cf435189faeb2f4c448e94
Autor:
Geoff A. Cranch, Nicole Menkart, Jonathan M. Nichols, Gustavo K. Rohde, Meredith N. Hutchinson
Publikováno v:
IEEE Signal Processing Letters. 26:908-912
Time delay estimation between signals propagating through nonlinear media is an important problem with application to radar, underwater acoustics, damage detection, and communications (to name a few). Here, we describe a simple approach for determini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1edc3a5f97b70a8924efa800ae20ced9
https://doi.org/10.1109/lsp.2019.2895457
https://doi.org/10.1109/lsp.2019.2895457
Publikováno v:
Optical Fiber Sensors Conference 2020 Special Edition.
We demonstrate a fiber laser sensor used to detect acoustic emissions generated by stress corrosion cracking in sensitized aluminum. Several performance metrics closely match those of industry standard piezo-electric sensors.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::114df456a26ab182f6ed75fc14dcd9e9
https://doi.org/10.1364/ofs.2020.w4.47
https://doi.org/10.1364/ofs.2020.w4.47
Autor:
Abu Hasnat Mohammad Rubaiyat, Shiying Li, Meredith N. Hutchinson, Gustavo K. Rohde, Kyla M. Hallam, Jonathan M. Nichols
Publikováno v:
IEEE Trans Signal Process
We present a new method for estimating signal model parameters using the Cumulative Distribution Transform (CDT). Our approach minimizes the Wasserstein distance between measured and model signals. We derive some useful properties of the CDT and show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fab53fd25f19ec43aba31683a1e21eb
https://pubmed.ncbi.nlm.nih.gov/32733121
https://pubmed.ncbi.nlm.nih.gov/32733121
Publikováno v:
Marine Structures. 81:103090
While traditional sensing systems can suffer from low spatial sampling density and often face significant operational challenges in the maritime environments routinely experienced by naval craft, fiber optics provide a distributed sensing solution th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::695ddf873d8cfaa10cf4a699d351ac0e
https://doi.org/10.1016/j.marstruc.2021.103090
https://doi.org/10.1016/j.marstruc.2021.103090
Publikováno v:
Journal of Lightwave Technology. 36:4371-4378
We introduce an idealized model of a photonic link comprised of a Mach–Zehnder modulator, described by sinusoidal nonlinearity, and a photodiode, with a memoryless nonlinearity described by a Taylor expansion about the operation point. The model us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::245d0d97c9d03bc8843b555e0dc6ecc3
https://doi.org/10.1109/jlt.2018.2840044
https://doi.org/10.1109/jlt.2018.2840044
Publikováno v:
Journal of Lightwave Technology. 35:2444-2450
This paper derives, and then implements, a maximum likelihood estimation procedure for the equivalent circuit model parameters of a photodetector. Specifically, we consider a frequency domain identification procedure whereby the observed data take th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bdf6f242f4f51888f316f969525bd32
https://doi.org/10.1109/jlt.2017.2658178
https://doi.org/10.1109/jlt.2017.2658178
Autor:
Meredith N. Hutchinson, Yue Hu, Keith J. Williams, Curtis R. Menyuk, Xiaojun Xie, Joe C. Campbell, Vincent J. Urick
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 2, Pp 1-11 (2017)
We calculate the amplitude-to-phase (AM-to-PM) noise conversion in a modified unitraveling carrier photodetector. We obtained two nulls as measured in the experiments, and we explain their origin. The nulls appear due to the transit time variation wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb7a8b43f358b4f9fa9f5b67b9f144f1
https://ieeexplore.ieee.org/document/7879266/
https://ieeexplore.ieee.org/document/7879266/
Publikováno v:
Optics letters. 44(20)
In this Letter, we implement a model-based auto-regressive estimator of the frequency response for a high-speed photodiode (PD). A transfer function is developed, and the associated coefficients representing the PD model and frequency response are so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7989675e5e490e90f0c7616befbbd1e9
https://pubmed.ncbi.nlm.nih.gov/31613248
https://pubmed.ncbi.nlm.nih.gov/31613248