Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Miguel V. Andres"'
Publikováno v:
IEEE Access, Vol 10, Pp 18843-18854 (2022)
A rigorous Surface Impedance (SI) formulation for planar waveguides is presented. This modal technique splits the modal analysis of the waveguide in two steps. First, we obtain the modes characteristic equations as a function of the SI and, second, w
Externí odkaz:
https://doaj.org/article/54166fca21504b8c9c5f33405c6a36c4
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-5 (2022)
Here we present a self-started passively mode-locked thulium-doped fiber laser with in-band pumping at 1561 nm that fully retains polarization and emits beyond 2 μm. We obtained a sequence of light pulses at 13.084 MHz, where the pulse and spectral
Externí odkaz:
https://doaj.org/article/eb21193f989f4eb4af3a4535f59ffdbf
Autor:
Abraham Loredo-Trejo, Yanelis Lopez-Dieguez, Lorena Velazquez-Ibarra, Antonio Diez, Enrique Silvestre, Julian M. Estudillo-Ayala, Miguel V. Andres
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 5, Pp 1-8 (2019)
We report the experimental observation of the polarization modulation instability (PMI) effect in all-normal dispersion (ANDi) microstructured optical fibers (MOFs) with quasi-continuous pumping. The small unintentional birefringence (~10-5), that an
Externí odkaz:
https://doaj.org/article/ae715b8296584b7299a2439c634f6d23
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 6, Pp 1-9 (2019)
We report the generation of short pulses at 1 μm using an all-polarization-maintaining (PM) fiber configuration. The pulses are provided by an all normal-dispersion Fabry-Perot Yb-doped cavity and are compressed with an anomalous polarization-mainta
Externí odkaz:
https://doaj.org/article/5231c174f78046e585e43662329a02b5
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 1, Pp 1-7 (2017)
We report an all-fiber laser that emits a radially polarized cylindrical vector beam (CVB) at 1 μm based on an intracavity acousto-optic mode converter. We efficiently generate the CVB, taking advantage of the acousto-optic coupling from the HE11 mo
Externí odkaz:
https://doaj.org/article/a7397f98482745f992432f88c5afa7cc
Autor:
Sergio Calixto, Miguel V. Andres
Publikováno v:
Advances in Materials Science and Engineering, Vol 2015 (2015)
We report on a novel device to measure relative humidity. The sensor is based on surface diffraction gratings made of gelatin. This material swells and shrinks according to the content of water vapor in air. By sending a light beam to the grating, di
Externí odkaz:
https://doaj.org/article/2817494c165944cfa5006b6fa593cced
Publikováno v:
Results in Physics, Vol 55, Iss , Pp 107170- (2023)
In this paper, we show that a continuous-wave ytterbium-doped fiber laser implemented in the conventional configuration of a Fabry-Perot cavity with two fiber Bragg gratings as selective reflectors and a moderate output power (tens of watts) generate
Externí odkaz:
https://doaj.org/article/f698aaab72174211bc10b2a0f2633776
Autor:
Yuri O. Barmenkov, Pablo Muniz-Cánovas, Alexander V. Kir'yanov, Vicente Aboites, José-Luis Cruz, Miguel V. Andrés
Publikováno v:
Results in Physics, Vol 42, Iss , Pp 105980- (2022)
In this paper, we discuss the effective reflection of a fiber Bragg grating and its dependence on laser power when it is used as an output coupler of an ytterbium-doped fiber laser (here the effective reflection is considered to be a part of intracav
Externí odkaz:
https://doaj.org/article/868d1ded24f54fcf9c947ebc7f6c7a67
Publikováno v:
Fractal and Fractional, Vol 7, Iss 4, p 291 (2023)
In this work, it is demonstrated numerically that an asymmetric Moiré fiber grating operated in reflection can provide the required spectral response to implement an all-optical fractional differentiator. In our case, the accumulated phase shift is
Externí odkaz:
https://doaj.org/article/07d3d5b5e0664594a13742fd1b38515c
Publikováno v:
Applied Sciences, Vol 13, Iss 3, p 1981 (2023)
In this work, we compare the operation of a passively modelocked polarization-maintaining emission in two thulium-doped fiber lasers pumped at 1561 nm, with emission at wavelengths of 1.951 μm in one case and 2.07 μm in the other. We obtained a seq
Externí odkaz:
https://doaj.org/article/c59ae704eecd4a7eb3e53c9102614650