Výsledky vyhledávání - "David O. Caplan"

Reliability of BOLD signals in chronic stroke-induced aphasia

Autor: Jennifer E. Mack, Brenda Rapp, James Higgins, David O. Caplan, Swathi Kiran, Todd B. Parrish, Richard E. Zinbarg, Cynthia K. Thompson, Xue Wang, Elena Barbieri

Publikováno v: The European journal of neuroscienceREFERENCES. 52(8)

Investigating the neurobiology of language impairment and treatment in chronic stroke aphasia using fMRI requires an understanding of measurement variability within and between participants. In this multicenter study, we evaluated the scan-rescan rel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::917f9e418c61f52535e2764d93f0c8f4
https://pubmed.ncbi.nlm.nih.gov/32282965

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Atmospheric Emulation and Testing Methodology for Laboratory Verification of FSO Communications Transceivers

Autor: Curt Schieler, K. S. Y. Wong, Bryan S. Robinson, R. T. Schulein, Scott A. Hamilton, N. W. Spellmeyer, Farhad Hakimi, P. S. Bedrosian, J. P. Wang, David J. Geisler, David O. Caplan

Publikováno v: 2019 IEEE International Conference on Space Optical Systems and Applications (ICSOS).

Free-space optical (FSO) communications systems are under development by NASA to support a wide variety of missions (e.g., long-distance deep-space links and near-Earth low-Earth orbiting (LEO) links) that propagate through the turbulent atmospheric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d53351583d85763efbf25bfa2fbb652c
https://doi.org/10.1109/icsos45490.2019.8978991

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Narrowband optical filtering for background-limited photon-counting free-space optical communications

Autor: Igor D. Gaschits, Katia Shtyrkova, David O. Caplan

Publikováno v: Free-Space Laser Communications XXXI.

For free-space optical (FSO) communications through the turbulent atmospheric channel, multi-spatial-mode photoncounting detectors can provide an attractive high-sensitivity receiver solution. However, multi-mode detection also increases optical back

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b247aaebf8ab6b4166d36e794bd2c6d3
https://doi.org/10.1117/12.2510642

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Expansion of multi-rate capabilities for agile DPSK lasercom transceivers (Conference Presentation)

Autor: J. P. Wang, David O. Caplan, P. Stephan Bedrosian

Publikováno v: Free-Space Laser Communications XXXI.

Flexible multi-rate capabilities are attractive for communications over the dynamic free-space optical (FSO) channel since it enables links to be efficiently established over a variety of distances, channel conditions, aperture sizes, and transmitter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91a23178cf26b6ddbe0bed9b1564ea39
https://doi.org/10.1117/12.2510630

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Narrowband Optical Filtering with Wide Angular Acceptance for Free-Space Optical Communications§

Autor: Katia Shtyrkova, David O. Caplan, Igor D. Gaschits

Publikováno v: OSA Advanced Photonics Congress (AP) 2019 (IPR, Networks, NOMA, SPPCom, PVLED).

We demonstrate improved angular acceptance for low-loss narrowband optical filtering for high-sensitivity photon-counting free-space applications. Using a silicon etalon, a GHz-class passband with 230% greater low-loss angular acceptance is achieved.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::125773918f949ab5fe823143b41db51c
https://doi.org/10.1364/networks.2019.nem2d.2

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Introduction to the Photonic Networks and Devices (NETWORKS) Special Issue

Autor: Marco Fiorentino, Marija Furdek, David O. Caplan

Publikováno v: Journal of Optical Communications and Networking. 12:NET1

This special issue comprises extended versions of some of the top-scored papers that were presented at the OSA Photonic Networks and Devices (NETWORKS) meeting that was part of the OSA Advanced Photonics Congress held in Burlingame, California, USA,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c9ff537d1ad4d5d8d3134915b0585fff
https://doi.org/10.1364/jocn.391301

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Directly Modulated Laser Transmitters for Scalable Multi-rate DPSK Communications§

Autor: B. R. Romkey, J. P. Wang, Michael L. Stevens, Scott A. Hamilton, David O. Caplan, A. Horvath, P. S. Bedrosian, C. D. Burton

Publikováno v: Conference on Lasers and Electro-Optics.

We present a new approach for generating multi-rate burst-mode DPSK waveforms using time and frequency-windowed directly modulated laser transmitters. Near-theoretical performance is demonstrated over a wide range of data rates using a WDM-scalable i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::19a5907342f3dc652baa79a784ba4037
https://doi.org/10.1364/cleo_si.2018.stu3c.7

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