Results 311 to 320 of about 193,670 (324)
Some of the next articles are maybe not open access.
Crystalline Semiconductor Core Optical Fibers
Advances in Optical Materials, 2011Silicon and germanium core optical fibers are discussed. Losses of 4 dB/m have been achieved at 3 µm and suggest that such semiconductor optical fibers could be of practical value for nonlinear and infrared applications.
John Ballato +6 more
openaire +2 more sources
Liquid Crystalline Cores for Optical Fibers
Molecular Crystals and Liquid Crystals, 1991We consider the problem of wave guiding by optical fibers with nematic liquid crystal cores. The dielectric properties of the core which govern wave guiding in the fiber are determined by the nemat...
Peter Palffy-Muhoray +2 more
openaire +2 more sources
2010
The first optical-frequency hollow waveguides were simple parallel-plate guides. The early pioneering work in this field was done by Garmire et al. Her group made a rectangular waveguide using aluminum strips separated by about 0.5 mm with bronze shim stock. This structure is shown in Fig. 3.2. Even when the aluminum was not well polished, these guides
openaire +2 more sources
The first optical-frequency hollow waveguides were simple parallel-plate guides. The early pioneering work in this field was done by Garmire et al. Her group made a rectangular waveguide using aluminum strips separated by about 0.5 mm with bronze shim stock. This structure is shown in Fig. 3.2. Even when the aluminum was not well polished, these guides
openaire +2 more sources
Polycarbonate hollow-core microstructured optical fiber
Optics Letters, 2008A hollow-core microstructured polymer optical fiber is fabricated from polycarbonate material and guidance by inhibited coupling in a two-layer structure is demonstrated in two strong transmission bands with minimum losses of 9.0 dB/m at 800 nm and 3.1 dB/m at 1550 nm.
Sergio G. Leon-Saval +2 more
openaire +3 more sources
Future of Semiconductor-core Optical Fibers
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), 2018Semiconductor-core optical fibers hold promise for long wavelength transmission systems as well as for nonlinear and active optoelectronic devices. This talk includes a status report on fiber properties and a prospectus of some future directions.
John Ballato +4 more
openaire +2 more sources
Mode conversion in rectangular-core optical fibers
Applied Optics, 2011Mode conversion from the fundamental to a higher-order mode in a rectangular-core optical fiber is accomplished by applying pressure with the edge of a flat plate. Modal analysis of the near and far field images of the fiber's transmitted beam determines the purity of the converted mode. Mode conversion reaching 75% of the targeted higher-order mode is
Michael J. Messerly +5 more
openaire +3 more sources
Couplings in spun twin-core optical fibers
Optics Letters, 1992A new effect of spun twin-core fiber is observed in which the coupling between the two cores is increased with the spin rate. In addition, the cladding-mode attenuation is also increased. These effects can find many useful applications in fiber devices for optical communication, sensing, or signal processing.
Pak Lim Chu +2 more
openaire +3 more sources
Annealing of Semiconductor Core Optical Fibers
Advanced Photonics Congress, 2012Ex-situ rapid photothermal annealing is shown, through X-ray diffraction, Raman spectroscopy and Schottky diodes, to enhance the structural homogeneity of silicon optical fibers by increasing local crystallinity, thus advancing their optoelectronic performance.
Nishant Gupta +11 more
openaire +2 more sources
Germania-based core optical fibers
Journal of Lightwave Technology, 2005Germania-glass-based core silica glass cladding single-mode fibers (/spl Delta/n up to 0.143) with a minimum loss of 20 dB/km at 1.9 /spl mu/m were fabricated by the modified chemical vapor deposition (MCVD) method. The fibers exhibit strong photorefractivity with the type-IIa-induced refractive-index modulation of 2/spl times/10/sup -3/.
E. M. Dianov, V.M. Mashinsky
openaire +2 more sources
Determination Of Core Centering In Optical Fibers
SPIE Proceedings, 1987AbstractThe measuring method described is based on the GALAI -CIS -1 particle sizing system. The instrument scans the fiber by a focused laser beam and the transmitted light is analyzed to evaluate the required information. It is demonstrated that core centering canbe determined within one micron accuracy.
Joseph Shamir +2 more
openaire +2 more sources