2011
DOI: 10.1088/2040-8978/13/3/035710
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N-slit interferometer for secure free-space optical communications: 527 m intra interferometric path length

Abstract: Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and R… Show more

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Cited by 7 publications
(4 citation statements)
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“…The answer to this question is in the affirmative: Soft intersection of propagating N-slit interferometric characters, using spider web silk fibers, was demonstrated by Duarte et al (2011) using an experimental configuration described in Figure 20.1. This is the case even if the classical beam splitter is highly transparent and only ∼0.4 mm in thickness, since the observe phenomenon is a diffractive edge effect brought about by an abrupt change in the spatial distribution of the refractive index.…”
Section: Soft Intersection Of Interferometric Charactersmentioning
confidence: 99%
See 1 more Smart Citation
“…The answer to this question is in the affirmative: Soft intersection of propagating N-slit interferometric characters, using spider web silk fibers, was demonstrated by Duarte et al (2011) using an experimental configuration described in Figure 20.1. This is the case even if the classical beam splitter is highly transparent and only ∼0.4 mm in thickness, since the observe phenomenon is a diffractive edge effect brought about by an abrupt change in the spatial distribution of the refractive index.…”
Section: Soft Intersection Of Interferometric Charactersmentioning
confidence: 99%
“…In this regard, the orderly nondestructive diffractive effects reported by Duarte et al (2011Duarte et al ( , 2013, following soft interrogation via the insertion of a microscopic spider web fiber, are extremely interesting given that the information contained in the interferometric character is largely preserved albeit the presence of the fiber is nicely detected. In this regard, the orderly nondestructive diffractive effects reported by Duarte et al (2011Duarte et al ( , 2013, following soft interrogation via the insertion of a microscopic spider web fiber, are extremely interesting given that the information contained in the interferometric character is largely preserved albeit the presence of the fiber is nicely detected.…”
Section: Soft Interferometric Probingmentioning
confidence: 99%
“…Adding security to FSO communications has usually been proposed using laser N-slit interferometers where the laser signal takes the form of an interferometric pattern such that any attempt to intercept the signal causes the collapse of the interferometric pattern 4,5 . This technique has been demonstrated to work over propagation distances of practical interest (several kilometers) 6 for terrestrial applications and estimated to work over several thousand kilometers (2,000-10,000 km) 7,8 for space applications. Interferometric techniques, however, assume the availability of laser technology with minimal divergence of the interferometric signals.…”
Section: Introductionmentioning
confidence: 99%
“…Albeit its initial propagation distance in the laboratory was only 15 cm, it was envisioned as an interferometric tool ideally suited for propagation in the vacuum, or outer space (Duarte, 2002). Subsequently, NSLI experiments have also been conducted over hundreds of meters, in the field, via open atmosphere (Duarte et al, 2010(Duarte et al, , 2011.…”
Section: Introductionmentioning
confidence: 99%