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Comparative study of ring and random cavities for fiber lasers
(Optical Society of America, 2014)
info:eu-repo/semantics/article,
An experimental comparison of three fiber laser structures with the same Raman gain medium is presented in order to establish the main pros and cons of each basic scheme. The first fiber laser is based on a hybrid ring–random ...
Internal modulation of a Random fiber laser
(Optical Society of America, 2013)
info:eu-repo/semantics/article,
A characterization of a modulated random mirror laser has been experimentally carried out. Unlike conventional internally modulated fiber lasers, no distortion of the modulating frequency or self-mode-locking effects were ...
Low-power class-AB CMOS voltage feedback current operational amplifier with tunable gain and bandwidth
(IEEE, 2014)
Artículo / Artikulua,
A CMOS class AB variable gain Voltage Feedback Current Operational Amplifier (VFCOA) is presented. The implementation is based on class AB second generation current conveyors and exploits an electronically tunable ...
Geometry influence on the transmission spectra of dielectric single layers of spheres with different compactness
(AIP Publishing, 2010)
info:eu-repo/semantics/article,
The transmission of spectra of different dielectric spheres single layer arrangements has been
measured. High dielectric permittivity ε =7 spheres of several millimeters of diameter were used
to build the samples whose ...
High frequency power transformers with foil windings: maximum interleaving and optimal design
(IEEE, 2015)
Artículo / Artikulua,
Foil conductors and primary and secondary interleaving are normally used to minimize winding losses in high frequency transformers used for high-current power applications. However, winding interleaving complicates the ...
Dipolar resonances in conductive carbon micro-fibers probed by near-field terahertz spectroscopy
(AIP Publishing, 2015)
info:eu-repo/semantics/article,
We observe dipole resonances in thin conductive carbon micro-fibers by detecting an enhanced
electric field in the near-field of a single fiber at terahertz (THz) frequencies. Time-domain analysis
of the electric field ...
Effects of pump pulse extinction ratio in Brillouin optical time-domain analysis sensors
(Optical Society of America, 2017)
info:eu-repo/semantics/article,
We report on two previously unknown non-local effects that have been found to impair
Brillouin optical time-domain analysis (BOTDA) sensors that deploy limited extinction ratio
(ER) pump pulses. The first one originates ...
Multiband one-way polarization conversion in complementary split-ring resonator based structures by combining chirality and tunneling
(Optical Society of America, 2015)
info:eu-repo/semantics/article,
Multiband one-way polarization conversion and strong
asymmetry in transmission inspired by it are demonstrated in ultrathin
sandwiched structures that comprise two twisted aperture-type arrays of
complementary split-ring ...
Terahertz epsilon-near-zero graded-index lens
(Optical Society of America, 2013)
info:eu-repo/semantics/article,
An epsilon-near-zero graded-index converging lens with planar
faces is proposed and analyzed. Each perfectly-electric conducting (PEC)
waveguide comprising the lens operates slightly above its cut-off frequency
and has ...
Long-range hybrid network with point and distributed Brillouin sensors using Raman amplification
(Optical Society of America, 2010)
info:eu-repo/semantics/article,
We propose a novel concept for hybrid networks that combine
point and distributed Brillouin sensors in a cost-effective architecture that
also deploys remote distributed Raman amplification to extend the sensing
range. A ...