Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Arash Karbaschi"'
Publikováno v:
Applied Physics B. 91:1-6
We present a simple, very compact, and inexpensive spectrometer for diffuse source spectroscopy using only a volume hologram (recorded by two spherical beams) and a CCD camera (or a detector array). We show that this spectrometer can operate well und
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0e3897d2f57508dda4102c2c68b58e7
https://doi.org/10.1007/s00340-008-2968-8
https://doi.org/10.1007/s00340-008-2968-8
Autor:
David J. Brady, Michael E. Sullivan, Ali Adibi, Chaoray Hsieh, Arash Karbaschi, Omid Momtahan
Publikováno v:
Optics express. 12(13)
We investigate the feasibility of designing spectral diversity filters using spherical beam volume holograms. Our experimental results qualitatively show the separation of the information of different incident wavelength channels using spherical beam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1db9d04af9b955caa7362e024ea598d5
https://pubmed.ncbi.nlm.nih.gov/19483819
https://pubmed.ncbi.nlm.nih.gov/19483819
Publikováno v:
CISS
We propose a computationally efficient scheme to decode two-dimensional (2D) intersymbol interference (ISI) channel with M-ary input. The basic idea is to equalize the channel stage by stage. To begin with the stage with the highest signal power leve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fa029bd97792a25189dafa13130856c
https://doi.org/10.1109/ciss.2009.5054694
https://doi.org/10.1109/ciss.2009.5054694
Autor:
Faramarz Fekri, Ali Adibi, Arash Karbaschi, Stephen McLaughlin, Omid Momtahan, Shayan Garani Srinivasa
Publikováno v:
GLOBECOM
In this paper, we consider the tradeoffs of binary and M-ary signaling in page-oriented holographic storage systems that multiplex pages using two methods: conventional angle multiplexing throughout the volume and localized recording. We study the mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68e2f0031a9d8441477f3fa4af07e6e7
https://doi.org/10.1109/glocom.2006.162
https://doi.org/10.1109/glocom.2006.162
Publikováno v:
Frontiers in Optics.
We demonstrate an 8-channel free-space optical interconnect system using a single volume holographic element recorded in photopolymer. Important system performances, such as cross-talk, misalignment tolerances, and link efficiency, are characterized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20359e9b5bc9d4d4a998c71e82eedcc3
https://doi.org/10.1364/fio.2006.jwd83
https://doi.org/10.1364/fio.2006.jwd83
Publikováno v:
SPIE Proceedings.
We present a class of spectrometers that work based on diffractive properties of spherical beam volume holograms. The hologram in these spectrometers is recorded by a plane wave and a spherical beam and acts as a spectral diversity filter (SDF), whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04b795bba43b24aed83c91fac7d5b260
https://doi.org/10.1117/12.622570
https://doi.org/10.1117/12.622570
Publikováno v:
Applied optics. 43(36)
The spherical beam volume hologram, recorded by a plane wave and a spherical beam, is investigated for spectroscopic applications in detail. It is shown that both the diffracted and the transmitted beam can be used for spectroscopy when the hologram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c847d13126b3ad0b7b78f6b7fd71ed4
https://pubmed.ncbi.nlm.nih.gov/15646776
https://pubmed.ncbi.nlm.nih.gov/15646776
Publikováno v:
Frontiers in Optics.
A new technique for optical correlation using gated holographic recording is demonstrated. Several persistent holograms are localized within separate slices as close as 33 microm apart along the crystal. Individual holograms can be dynamically erased
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::065f23976a7e0a7b7b704d170d8e6ac4
https://doi.org/10.1364/fio.2005.ftuy4
https://doi.org/10.1364/fio.2005.ftuy4
Publikováno v:
Frontiers in Optics.
A congruently grown LiNbO3:Fe:Mn crystal with high Fe concentrations is optimized and characterized to be used in holographic memory. Particularly, the material properties for 90o geometry with small grating period is investigated in details.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f47712e7ddf0b343d2d6c38367e08095
https://doi.org/10.1364/fio.2005.ftuy6
https://doi.org/10.1364/fio.2005.ftuy6
Publikováno v:
Adaptive Optics: Analysis and Methods/Computational Optical Sensing and Imaging/Information Photonics/Signal Recovery and Synthesis Topical Meetings on CD-ROM.
We describe a new class of compact spectral diversity filters implemented using spherical beam volume holograms. Spectral diversity is improved by rotation multiplexing technique. Diffuse source spectroscopy enabled by using Fourier transform archite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d7c8c4da2085b8e564ddf4a3bba9afe
https://doi.org/10.1364/cosi.2005.ctuc5
https://doi.org/10.1364/cosi.2005.ctuc5