Instituto Tecnologico Superior Of Guanajuato

Guanajuato, Mexico

Instituto Tecnologico Superior Of Guanajuato

Guanajuato, Mexico
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Wilson M.,University of Chile | Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato
Journal of Physics: Conference Series | Year: 2016

In this work an all-fiber laser system able to produce stable cnoidal waves in both limits, i.e. in sinusoidal and soliton limits, is presented. The system is constructed using an erbium highly-doped fiber as an active media and an electrooptic modulator as the core of the control tool. This control tool is able to modulate the cavity losses. The direct modulation allows to control the pulses properties, shape, width and intensity. The proposed system is well described by a three level laser model based on the Statz-de Mars rate equations. Numerical and Experimental results are presented. © Published under licence by IOP Publishing Ltd.


Duran-Sanchez M.,National Institute of Astrophysics, Optics and Electronics | Ibarra-Escamilla B.,National Institute of Astrophysics, Optics and Electronics | Kuzin E.A.,National Institute of Astrophysics, Optics and Electronics | Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato
Mathematical Problems in Engineering | Year: 2015

We propose in this work a technique for determining the amplitude distribution of a wave packet containing a large number of short optical pulses with different amplitudes. The technique takes advantage of the fast response of the optical Kerr effect in a fiber nonlinear optical loop mirror (NOLM). Under some assumptions, the statistics of the pulses can be determined from the energy transfer characteristic of the packet through the NOLM, which can be measured with a low-frequency detection setup. The statistical distribution is retrieved numerically by approximating the solution of a system of nonlinear algebraic equations using the least squares method. The technique is demonstrated numerically in the case of a packet of solitons. © 2015 Olivier Pottiez et al.


Wilson M.,CNRS Atomic and Molecular Physics Laboratory | Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato
Revista Mexicana de Fisica | Year: 2015

Stable soliton-like pattern formation in a compact erbium-doped all fiber laser system is reported. The windows where these bounded states can be achieved were founded varying the cavity losses actively with the help of an electro-optic modulator. The fiber laser worked with a slope efficiency of 24 percent and threshold of less than 16 mW allowing a maximum output power of 3.83 mW. This fiber laser system can be used to obtain non-distortion pulses for optical communication purposes.


Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato | Ibarra-Escamilla B.,National Institute of Astrophysics, Optics and Electronics | Kuzin E.A.,National Institute of Astrophysics, Optics and Electronics | Maya-Ordonez F.M.,National Institute of Astrophysics, Optics and Electronics | Duran-Sanchez M.,National Institute of Astrophysics, Optics and Electronics
Laser Physics | Year: 2015

We report a double-clad Er/Yb doped fiber tunable laser in continuous wave (CW) and actively Q-switched modes using a fiber Bragg grating (FBG) as wavelength selective in a linear cavity resonator. The laser was tuned in a range from 1532 to 1542 nm for both CW and pulsed modes. The minimum pulse duration was 420 ns at a repetition rate of 120 kHz and ∼0.7 W average output power in CW (slope efficiency of ∼8%) and 1.03 W average output power in pulse mode (slope efficiency of ∼12%). © 2015 Astro Ltd.


Gonzalez-Garcia A.,National Institute of Astrophysics, Optics and Electronics | Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato | Ibarra-Escamilla B.,National Institute of Astrophysics, Optics and Electronics | Kuzin E.A.,National Institute of Astrophysics, Optics and Electronics | And 5 more authors.
Optics and Laser Technology | Year: 2013

We report the efficient and stable operation at 1549 nm of an actively Q-switched fiber laser based on an Er3+/Yb3+ doped double-clad single mode fiber. It operates with a repetition rate from 45 to 120 kHz and pulse duration from 34 to 80 ns; the output pulse shape and peak pulse intensity are stable over hours of operation. For a repetition rate of 120 kHz and a maximum pump power of 8.1 W we obtained an average output power of 4.0 W with an overall efficiency of 50% and with a minimum pulse duration of 34 ns. © 2012 Elsevier Ltd.


Duran Sanchez M.,Technological University of Mexico | Alvarez Tamayo R.I.,Technological University of Mexico | Kuzin E.A.,National Institute of Astrophysics, Optics and Electronics | Ibarra-Escamilla B.,National Institute of Astrophysics, Optics and Electronics | And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014

We present an experimental method for straight forward dual wavelength Erbium doped fiber linear cavity laser characterization based in laser line spectrum behavior due to the Hi-Bi FOLM transmission spectrum wavelength displacement by temperature variations in the fiber loop. The laser operation is for a single and dual mode, obtained through the adjustment of the cavity losses by the Sagnac interferometer spectrum wavelength displacement due to the temperature variation of the fiber loop. The method allow determine the laser operation from a single emission line and a two emission lines simultaneously through the Sagnac transmittance spectrum optical power variations measurement due to wavelength spectrum shifting for each laser wavelength generated separately and overlapping these obtained spectrums. © 2014 Copyright SPIE.


Hernandez-Garcia J.C.,University of Guanajuato | Hernandez-Garcia J.C.,National Institute of Astrophysics, Optics and Electronics | Ibarra-Escamilla B.,National Institute of Astrophysics, Optics and Electronics | Kuzin E.A.,National Institute of Astrophysics, Optics and Electronics | And 2 more authors.
Laser Physics | Year: 2014

In this paper, we study noise-like pulse generation in a km-long fibre ring laser including a double-clad erbium-ytterbium fibre and passively mode-locked through nonlinear polarization evolution. Although single noise-like pulsing is only observed at moderate pump power, pulse energies as high as 120 nJ are reached in this regime. For higher pump power, the pulse splits into several noise-like pulses, which then rearrange into a stable and periodic pulse train. Harmonic mode locking from the 2nd to the 48th orders is readily obtained. At pump powers close to the damage threshold of the setup, much denser noise-like pulse trains are demonstrated, reaching harmonic orders beyond 1200 and repetition frequencies in excess of a quarter of a GHz. The mechanisms leading to noise-like pulse breaking and stable high-order harmonic mode locking are discussed. © 2014 Astro Ltd.


Ibarra-Escamilla B.,National Institute of Astrophysics, Optics and Electronics | Kuzin E.A.,National Institute of Astrophysics, Optics and Electronics | Hernandez-Garcia J.C.,National Institute of Astrophysics, Optics and Electronics | Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato | Duran-Sanchez M.,Technological University of Mexico
Laser Physics | Year: 2014

In this paper we study a dispersion-managed figure-eight fibre laser generating noise-like pulses with adjustable characteristics. Non-self-starting mode locking leads to the formation of a single noise-like pulse circulating in the cavity. Both the duration of the pulse and its spectral width can be adjusted by tuning the angle of wave retarders, in particular a half-wave retarder that controls the switching power of the polarization-imbalanced nonlinear optical loop mirror that is used as mode locker. Wave retarder tuning also allows observing an abrupt transition between two clearly distinct noise-like pulse regimes, one characterized by a long (> 1 ns) rectangular pulse envelope with a narrow spectrum and the other characterized by shorter sub-ns bell-shaped pulses whose Raman-enhanced spectrum extends far beyond the doped fibre gain spectrum. The existence of two distinct noise-like pulsing modes can be understood in terms of the periodic variation of the pulse spectrum along the cavity, which is able to shift the effective dispersion regime of the laser. By joining the tuning ranges of each regime, the noise-like pulse duration can be adjusted between 57 ps and 6.3 ns, and its bandwidth between 3.5 and 59 nm. © 2014 Astro Ltd.


Gutierrez-Guerra R.,Technological University of León | Gutierrez-Guerra R.,University of Guanajuato | Murrieta-Duenas R.,Instituto Tecnologico Superior Of Guanajuato | Murrieta-Duenas R.,University of Guanajuato | And 5 more authors.
Chemical Engineering and Processing: Process Intensification | Year: 2016

In this paper we study the design and optimization of heat-integrated distillation columns (HIDiC) using a constrained Boltzmann-based estimation of distribution algorithm. The total annual cost was defined as the fitness function of the problem, and the effect of the relative volatility on the performance of the HIDiC configurations was evaluated. We analyzed a set of equimolar mixtures with relative volatility varying from 1.12 to 2.4. The design-optimization strategy implemented was executed through Matlab-Excel-Aspen Plus® interface. The results showed that the best interrelation between energy savings and TAC of the HIDiC columns were obtained in the separation of mixtures with relative volatilities between 1.12 and 1.5, particularly for mixtures of isomers. As a result, energy savings from 50 to 87% were obtained for this class of mixture. At the same time, we obtained HIDiC sequences with TACs lower than that TAC of conventional columns (2-16%). Nevertheless, we found that the TAC of some HIDiC schemes resulted higher than the TAC of conventional columns (6-17%). In addition, carbon dioxide emissions released into the atmosphere were reduced in the same proportion as savings in energy required to fuel the reboilers. © 2016 Elsevier B.V. All rights reserved.


Gonzalez-Garcia A.,Instituto Tecnologico Superior Of Guanajuato | Wilson M.,Instituto Tecnologico Superior Of Guanajuato | Gonzalez-Garcia G.,Instituto Tecnologico Superior Of Guanajuato | Carrillo-Lopez B.E.,Instituto Tecnologico Superior Of Guanajuato | And 4 more authors.
CHILECON 2015 - 2015 IEEE Chilean Conference on Electrical, Electronics Engineering, Information and Communication Technologies, Proceedings of IEEE Chilecon 2015 | Year: 2015

In this work we present a form to get soliton pulses using a fiber Bragg-grating based on a Gires-Tournois interferometer (FBGGTI) as control medium for dispersion and nonlinearities. The interferometer is conformed by two Bragg-gratings, one of them as a weak grating, and the other one as a strong one, spaced by 4 mm of distance. Inside the setup, a «sech» profile as apodization type is used, to generate fundamental solitons. The results show that when Gaussian profile pulses are launched into this device fundamentals solitons, that are excellent for communication systems, are obtained. © 2015 IEEE.

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