random distributed feedback fibre laser treatment

(PDF) Random distributed feedback fibre laser - Academia.edu- random distributed feedback fibre laser treatment ,A basic laser scheme normally requires two cost, open-cavity, standard transmission fibre with random key elements: a gain material that provides amplification and an distributed feedback. optical cavity that traps the light, creating a positive feedback. Lasing occurs when the total gain in the cavity overcomes the Results total cavity loss. Random distributed feedback fibre laser - turitsynrandom weak distributed feedback, stationary laser operation is clearly demonstrated. The fibre length required for lasing based on the random distrib-uted RS feedback can be estimated as follows. Neglecting pump depletionduetoStokeswavegeneration,thelongitudinaldistribution of the Raman gain g R P p (z) is defined by the pump powerattenuation P p (z)¼P 0



Random distributed feedback fibre laser | Nature Photonics

Figure 1: Principle of random distributed feedback fibre laser operation. Photons propagating in a long fibre are coherently scattered by random refractive index inhomogeneities complying with...

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Theory of a Random Fiber Laser

and the effectively onedimensional random distrib uted feedback leads to the generation of a stationary beam with a narrow spectrum. The random distributed feedback fiber laser has efficiency and performance that are comparable to and even exceed those of simi lar conventional fiber lasers. The key features of the

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Random Distributed Feedback Fiber Laser - Optica

S. K. Turitsyn, "Random Distributed Feedback Fiber Laser," in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper OMQ1.

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PDF - Random distributed feedback fiber laser

Random distributed feedback fiber laser. Sergei K. Turitsyn 1. Institutions (1) 06 Mar 2011-Vol. 4, Iss: 4, pp 231-235. Abstract: I will overview our recent results ...

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Random Distributed Feedback Fiber Laser Based on Combination ...

Random distributed feedback fiber laser (RDF-FL) based on combination of Er-doped fiber (EDF) and single-mode fiber (SMF) is proposed in this paper. Through pumping of both the EDF (i.e., 1480 nm pump) and the SMF (i.e., 1455 nm pump), random lasing is obtained. With increase of pump powers, different transitions between chaotic and stable status of the output spectrum are observed. Especially ...

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Random distributed feedback Raman fiber laser operating in a ...

|a Abstract The random distributed feedback fiber laser operating via the stimulated Raman scattering and random distributed feedback based on the Rayleigh scattering is demonstrated in the 1.2 μm frequency band. The RDFB fiber laser generates at 1174 nm up to 2.4 W of output power with corresponding slope efficiency more than 30%.

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Er-doped fiber laser with regular and random distributed feedback

The designed artificial Rayleigh scattering fiber in combination with distributed feedback (DFB) erbium-doped fiber laser allows to narrow the linewidth. A similar effect was observed in configuration with 25-km SMF-28e+ fiber spool, where it was used as an additional spectral filter.

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Tunable Erbium-Doped Fiber Laser Based on Random Distributed ...

A tunable erbium-doped fiber (EDF) laser based on random distributed feedback through backward Rayleigh scattering in a 20-km-long single-mode fiber and a tunable fiber Fabry-Perot interferometer filter is demonstrated. It has a broad wavelength tuning range up to 40 nm (from 1525 to 1565 nm) with a narrow linewidth of ~0.04 nm. Due to the half-opened laser cavity design and the efficient gain ...

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Random Distributed Feedback Fiber Laser

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PDF - Random distributed feedback fiber laser

Random distributed feedback fiber laser. Sergei K. Turitsyn 1. Institutions (1) 06 Mar 2011-Vol. 4, Iss: 4, pp 231-235. Abstract: I will overview our recent results ...

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Random distributed feedback fiber laser at 2.1 μm. - Europe PMC

The maximum output power reached 0.5 W with the optical efficiency of 9%, which could be further improved by more pump power and optimized fiber length. To the best of our knowledge, this is the first demonstration of random distributed feedback fiber laser at 2 μm band based on Raman gain.

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Spectral correlations in a random distributed feedback fibre ...

components in the random fibre laser. The observed spectra are very similar (narrow peaks on the broad smooth background) to those observed and numerically simulated in diffusive random laser systems with coherent feedback13. Peak distribution statistics. The spectro-temporal evolution of the random fibre laser (Fig. 2) show that several ...

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Random distributed feedback fibre laser - NASA/ADS

The concept of random lasers making use of multiple scattering in amplifying disordered media to generate coherent light has attracted a great deal of attention in recent years. Here, we demonstrate a fibre laser with a mirrorless open cavity that operates via Rayleigh scattering, amplified through the Raman effect. The fibre waveguide geometry provides transverse confinement and effectively ...

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Random Distributed Feedback Fiber Laser - Optics & Photonics News

Issues > 2010 > December 2010 > Lasers > Random Distributed Feedback Fiber Laser Random Distributed Feedback Fiber Laser Sergei K. Turitsyn, Sergey A. Babin, Atalla E. El-Taher, Paul Harper, Dmitriy V. Churkin, Sergey I. Kablukov, Juan Diego Ania-Castañón, Vassilis Karalekas and Evgenii V. Podivilov

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Random Distributed Feedback Fiber Laser Generating ...

Random distributed feedback (DFB) fiber lasers have shown potential for applications in telecommunication, sensing, nonlinear optics, and imaging, due to attractive features such as low cost, simple technology, and modeless behavior. Cylindrical vector beams (CVBs) have also received much attention, for high-resolution imaging, optical trapping, telecommunication, and sensing. Little work has ...

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Random Distributed Feedback Fiber Laser - Optica

S. K. Turitsyn, "Random Distributed Feedback Fiber Laser," in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper OMQ1.

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Random Distributed Feedback Fiber Laser - Optics & Photonics News

Issues > 2010 > December 2010 > Lasers > Random Distributed Feedback Fiber Laser Random Distributed Feedback Fiber Laser Sergei K. Turitsyn, Sergey A. Babin, Atalla E. El-Taher, Paul Harper, Dmitriy V. Churkin, Sergey I. Kablukov, Juan Diego Ania-Castañón, Vassilis Karalekas and Evgenii V. Podivilov

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Random distributed feedback fibre laser | NATURE PHOTONICS ...

Here, we demonstrate a fibre laser with a mirrorless open cavity that operates via Rayleigh scattering, amplified through the Raman effect. The fibre waveguide geometry provides transverse confinement and effectively one-dimensional random distributed feedback, leading to the generation of a stationary near-Gaussian beam with a narrow spectrum ...

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(PDF) Random Distributed Feedback Fiber Laser - ResearchGate

fib er laser with an open cavit y t hat operates using random distributed feedback pro vided by Rayleigh sca ttering am plified through th e Raman effect. OCIS codes: (140.3550) Lasers, Raman;...

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Spectral correlations in a random distributed feedback fibre ...

The random fibre laser used in experiment is of a uni-directional, grating based, narrowband configuration, using Stimulated Raman Scattering (SRS) for gain and employing 40 km of standard telecommunications grade fibre for generating the feedback (see Methods and Supplementary Fig. 1). Threshold is realized near the pump power of 1.15 W, with typical output powers of the order of 10 mW near 1.20 W.

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Narrow-band generation in random distributed feedback fiber laser

Narrow-band emission of spectral width down to ~0.05 nm line-width is achieved in the random distributed feedback fiber laser employing narrow-band fiber Bragg grating or fiber Fabry-Perot interferometer filters. The observed line-width is ~10 times less than line-width of other demonstrated up to date random distributed feedback fiber lasers. The random DFB laser with Fabry-Perot ...

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Random distributed feedback fibre lasers - ScienceDirect

The key features of the generated radiation of random distributed feedback fibre lasers include: a stationary narrow-band continuous modeless spectrum that is free of mode competition, nonlinear power broadening, and an output beam with a Gaussian profile in the fundamental transverse mode (generated both in single mode and multi-mode fibres).

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(PDF) Random distributed feedback fiber laser | Juan Diego ...

Random distributed feedback fiber laser. 2011. J. Ania Castañón. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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Random distributed feedback fiber laser | IEEE Conference ...

Random distributed feedback fiber laser Abstract: I will overview our recent results on ultra-long lasers and will discuss the concept of a fiber laser with an open cavity that operates using random distributed feedback provided by Rayleigh scattering amplified through the Raman effect.

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