Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Timothy M. Yarnall"'
Autor:
Christopher C. Foy, Jeffrey Minch, Thomas C. Royster, Derrick Feld, Margaret Boning, Timothy M. Yarnall
Publikováno v:
Free-Space Laser Communications XXXV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab699f953a71ec4272531f2a96358027
https://doi.org/10.1117/12.2655357
https://doi.org/10.1117/12.2655357
Autor:
Christopher Foy, Jeffrey Minch, Derrick Feld, Rebecca Bourque, Daniel J. Weidman, Margaret Boning, Timothy M. Yarnall
Publikováno v:
Free-Space Laser Communications XXXIV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7af70dfe95b08105fd6c026823e6d5e
https://doi.org/10.1117/12.2612842
https://doi.org/10.1117/12.2612842
Autor:
Timothy M. Yarnall
Publikováno v:
OFC
Commercial high-rate LEO data relay networks with lasercom crosslink technology are nearing fruition. Physical layer connections are demonstrated, but higher layer challenges remain: topology control, data Doppler shifts, and disruption management.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4371f4bfeffc897005aadb74191d0568
https://doi.org/10.1364/ofc.2021.m4a.3
https://doi.org/10.1364/ofc.2021.m4a.3
Publikováno v:
OSA Quantum 2.0 Conference.
SU(1,1) coherently-boosted interferometers improve signal-to-noise ratio beyond the shot-noise limit with less loss-sensitivity than standard squeezing techniques. We investigate using this approach to benefit high-bandwidth analog photonic links.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6dfcd139388fd0444b2958fc6391495
https://doi.org/10.1364/quantum.2020.qw6a.4
https://doi.org/10.1364/quantum.2020.qw6a.4
Autor:
Curt Schieler, G. Lund, N. K. Fontaine, Bryan S. Robinson, Timothy M. Yarnall, Michael L. Stevens, David J. Geisler, Scott A. Hamilton
Publikováno v:
Free-Space Laser Communication and Atmospheric Propagation XXX.
Free-space optical communications links have the perpetual challenge of coupling light from free-space to a detector or fiber for subsequent detection. It is especially challenging to couple light from free-space into single-mode fiber (SMF) in the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::722565eeab75a200f8230578de2127ce
https://doi.org/10.1117/12.2294039
https://doi.org/10.1117/12.2294039
Autor:
James Torres, J. P. Wang, David J. Geisler, M. Hogan, Michael L. Stevens, D. M. Boroson, Bryan S. Robinson, Farzana I. Khatri, Tina Shih, O. V. Mikulina, William Hubbard, Steven Constantine, N. W. Spellmeyer, Antonios Seas, Jamie W. Burnside, R. Butler, Cathy E. DeVoe, Timothy M. Yarnall, T. King, Owen Guldner
Publikováno v:
Free-Space Laser Communication and Atmospheric Propagation XXX.
In recent years, NASA has been developing a scalable, modular space terminal architecture to provide low-cost laser communications for a wide range of near-Earth applications. This development forms the basis for two upcoming demonstration missions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f56696c99e9c00b017be49a4196d163
https://doi.org/10.1117/12.2291128
https://doi.org/10.1117/12.2291128
Autor:
G. Lund, Scott A. Hamilton, Bryan S. Robinson, Curt Schieler, Timothy M. Yarnall, Michael L. Stevens, David J. Geisler
Publikováno v:
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF).
Next-generation optical ground stations will need to have scalable collection areas while simultaneously providing efficient coupling from free space to single-mode fiber. We present a multi-aperture multi-spatial-mode receiver architecture along wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae1743b2ac81fc57f87199e0c60e499b
https://doi.org/10.1364/networks.2018.new4f.1
https://doi.org/10.1364/networks.2018.new4f.1
Autor:
Bryan S. Robinson, David J. Geisler, Curt Schieler, Michael L. Stevens, Timothy M. Yarnall, Scott A. Hamilton
Publikováno v:
2017 IEEE Photonics Conference (IPC).
We discuss an optical ground terminal receiver architecture based on multi-aperture digital coherent combining. Experimental results using four receivers demonstrate lossless coherent combining in the laboratory at power levels below 0.1 photons/bit/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cdbdc5afa6f680cf731879da33cdca2
https://doi.org/10.1109/ipcon.2017.8116293
https://doi.org/10.1109/ipcon.2017.8116293
Publikováno v:
2017 IEEE Photonics Conference (IPC).
Free space coupling to photonic lanterns is more tolerant to tilt errors and F-number mismatch than coupling to single-mode fibers. We analyze the coupling efficiency to single-mode fiber, and 3-mode and 6-mode photonic lanterns in the presence of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08d5d13aa3cff4476bbdfa099c3593e9
https://doi.org/10.1109/ipcon.2017.8116297
https://doi.org/10.1109/ipcon.2017.8116297
Autor:
Igor D. Gaschits, Marvin S. Scheinbart, Thomas Howe, Farhad Hakimi, Timothy M. Yarnall, Andrew S. Fletcher, Nicholas D. Hardy, Hemonth G. Rao, Cathy E. DeVoe, Scott A. Hamilton, Nathan Mittleman
Publikováno v:
SPIE Proceedings.
Optical propagation through the ocean encounters significant absorption and scattering; the impact is exponential signal attenuation and temporal broadening, limiting the maximum link range and the achievable data rate, respectively. MIT Lincoln Labo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06b88c309fc96a6fa5abd53ad1e1dd41
https://doi.org/10.1117/12.2264733
https://doi.org/10.1117/12.2264733