Results 11 to 20 of about 221,572 (291)
Contactless vital signs monitoring based on few-mode and multi-core fibers
Opto-Electronic Advances, 2020 Few-mode and multi-core fibers are proposed and demonstrated for contactless vital signs monitoring in this paper. In-line optical fiber interferometers using few-mode and multi-core fibers are designed and offset splicing is utilized for mode excitation.
Tan Fengze +4 more
doaj +3 more sources
Intrinsic loss of few-mode fibers
Optics Express, 2018 We summarize theoretical formulae for determining the intrinsic loss of few-mode fibers and compare intrinsic losses among step-index and parabolic graded-index few-mode fibers (FMF) with different dopants, and with single-mode fibers (SMF). The low-loss characteristics of pure-silica-core FMFs, in comparison with SMFs, give rise to additional ...
Yaping, Liu +5 more
openaire +5 more sources
Long distance transmission in few-mode fibers
Optics Express, 2010 Using multimode fibers for long-haul transmission is proposed and demonstrated experimentally. In particular few-mode fibers (FMFs) are demonstrated as a good compromise since they are sufficiently resistant to mode coupling compared to standard multimode fibers but they still can have large core diameters compared to single-mode fibers.
Yaman, Fatih +4 more
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Mode resolved bend loss in few-mode optical fibers
Optics Express, 2013 We present a novel approach to directly measure the bend loss of individual modes in few-mode fibers based on the correlation filter technique. This technique benefits from a computer-generated hologram performing a modal decomposition, yielding the optical power of all propagating modes in the bent fiber.
Christian, Schulze +6 more
openaire +4 more sources
Few-mode elastomeric optical fibers
Optical Materials Express, 2021 We present a new approach for producing elastomeric optical fibers with an optical behaviour corresponding to a few-mode optical fiber. Different fibers have been produced by first fabricating thermoplastic polyurethane preforms and subsequently drawing them.
Miguel Llera +7 more
openaire +1 more source
Learning the matrix of few-mode fibers for high-fidelity spatial mode transmission
APL Photonics, 2022 Few-mode fibers (FMFs) are promising for advancements in transmission capacity in classical and quantum communications. However, the inherent modal crosstalk limits the practical application of FMF.
Qian Zhang +3 more
doaj +1 more source
Autocompensating Measurement-Device-Independent quantum cryptography in few-mode optical fibers [PDF]
EPJ Web of Conferences, 2020 We present an autocompensating quantum cryptography technique for Measurement-Device-Independent quantum cryptography devices with different kind of optical fiber modes.
Liñares-Beiras Jesús +3 more
doaj +1 more source
Few-Mode Fiber Characterization System Based on the Spatially and Spectrally Imaging Technique
Sensors, 2022 With the widespread use of few-mode fibers, mode characteristics testing becomes essential. In this paper, current few-mode fiber testing techniques are discussed, and the S2 imaging technique is chosen and demonstrated to be capable of few-mode fiber ...
Jianxun Yu, Fengze Tan, Changyuan Yu
doaj +1 more source
Characterization of Few Mode Fibers by OLCI Technique [PDF]
, 2014 International audienceAll LP modes of a few mode fiber are simultaneously characterized using phase-sensitive optical low-coherence interferometry. The differential modal group delay and absolute chromatic dispersion values of each mode are retrieved ...
Gabet, R. +7 more
core +3 more sources
Monolithic mode-selective few-mode multicore fiber multiplexers
Scientific Reports, 2017 AbstractWith the capacity limits of standard single-mode optical fiber fast approaching, new technologies such as space-division multiplexing are required to avoid an Internet capacity crunch. Few-mode multicore fiber (FM-MCF) could allow for a two orders of magnitude increase in capacity by using the individual spatial modes in the different cores as ...
Riesen, N. +4 more
openaire +9 more sources