Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Geof Harston"'
Publikováno v:
SPIE Proceedings.
Progress in standoff detection of surface-bound explosives residue using photothermal and photoacoustic (PT/PA) imaging and spectroscopy has been reported recently. Photothermal/photoacoustic interferometry (PTI), a variation of the aforementioned te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31a1ce46a4d58028d5a588f8d55331c3
https://doi.org/10.1117/12.883027
https://doi.org/10.1117/12.883027
Autor:
Isaac Shpantzer, Jonathan M. Saint Clair, David C. Soreide, Pak Shing Cho, Yaakov Achiam, Geof Harston
Publikováno v:
SPIE Proceedings.
Delay-diversity transmission employing two orthogonal polarizations in turbulent media has been shown to be effective in combating fading. The technique employs simultaneous transmission of two orthogonal polarizations carrying the same information b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcbceafc739bddb6efbe09dd63961044
https://doi.org/10.1117/12.810503
https://doi.org/10.1117/12.810503
Autor:
Kai-Daniel F. Büchter, Jonathan M. Saint Clair, Wolfgang Sohler, David C. Soreide, Pak Shing Cho, Yaakov Achiam, Geof Harston, Isaac Shpantzer
Publikováno v:
SPIE Proceedings.
Atmospheric absorption, scattering, and turbulence are impairments in practical high-speed free-space laser communications. These atmospheric effects can be mitigated by choosing the proper transmission wavelength. It is well known that the MWIR (~3.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::057e718350f830e658322e0fd7d938e1
https://doi.org/10.1117/12.810498
https://doi.org/10.1117/12.810498
Publikováno v:
Coherent Optical Technologies and Applications.
Turbulence-induced fading in free-space transmission of optical RZ-QPSK can be mitigated in homodyne detection via delay-diversity. A SNR gain of 2.6 dB is obtained using orthogonal polarizations with delay comparable to the turbulence correlation ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad18dc310ef0eef289eec345f4bb53b5
https://doi.org/10.1364/cota.2008.cwb6
https://doi.org/10.1364/cota.2008.cwb6
Publikováno v:
Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications.
A new type of tunable waveguide optical frequency comb generator (FCG) integrated in a LiNbO3 ring resonator cavity is presented. The modeling of the integrated ring FCG, performance simulation and initial experimental results are described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65656d946114c0dfe3aa07ec8efad5f4
https://doi.org/10.1364/cota.2006.cfc3
https://doi.org/10.1364/cota.2006.cfc3
Autor:
Arkady Kaplan, Paul Goldgeier, Andreas Brennemann, Yaakov Achiam, Arie Hershkovits, P.S. Cho, Ralf M Bertenburg, Art Greenblatt, Geof Harston, Benjamim Adoram
Publikováno v:
Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications.
A 1550-nm coherent receiver with a LiNbO3 optical hybrid and balanced photoreceivers integrated in a single compact package is reported. Frequency response of the integrated receiver and bit-error-rate measurements of optical PSK signals are describe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1953e94b1feafb2fcc113054e02ba748
https://doi.org/10.1364/cota.2006.cthb2
https://doi.org/10.1364/cota.2006.cthb2
Autor:
Chris J. Kerr, Pak Shing Cho, Yaakov Achiam, Geof Harston, Arkady Kaplan, Art Greenblatt, Isaac Shpantzer
Publikováno v:
SPIE Proceedings.
Coherent homodyne detection using local laser oscillator is an important technique for applications requiring high receiver sensitivity. Conventional homodyne detection uses a continuous-wave (CW) local laser oscillator (LO) in which the only adjusta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9cf50d4243312d5b7d38a61fd197673
https://doi.org/10.1117/12.541569
https://doi.org/10.1117/12.541569
Autor:
Jacob B. Khurgin, Yoav Gross, Yaakov Achiam, Geof Harston, Moti Margalit, Chris J. Kerr, Art Greenblatt, Arkady Kaplan, Pak Shing Cho, Guy Levy-Yurista
Publikováno v:
SPIE Proceedings.
Next generation high-capacity (> 40 Gb/s) optical communication systems, whether for fiber or free-space transmission, will likely require high spectral efficiency techniques that enable optimization of performance, SWAP (size, weight and power), as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d28ff7b29c15ef91ef52719d86275eac
https://doi.org/10.1117/12.541574
https://doi.org/10.1117/12.541574