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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. Source


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. Source


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. Source


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. Source


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. Source

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