Effect of Rayleigh-scattering distributed feedback on multiwavelength Raman fiber laser generation

El-Taher, Atalla; Harper, Paul; Babin, Sergey A.; Churkin, Dmitry V.; Podivilov, E. V.; Ania-Castañón, Juan Diego; Turitsyn, Sergei K.

doi:10.1364/ol.36.000130

Cited by 125 publications

(45 citation statements)

References 20 publications

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“…In particular, our model explains the observed flat power distribution recently observed in the multi-wavelength Raman fibre laser [19] with a cavity formed by an array of 22 narrowband fibre Bragg gratings (i.e. highly reflective mirrors operating at different wavelengths) from one side and the RS-based random distributed mirror from the other side of the fibre.…”

Section: Efficiencysupporting

confidence: 53%

Broadly tunable high-power random fibre laser

et al. 2012

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As shown recently, a long telecommunication fibre may be treated as a natural one-dimensional random system, where lasing is possible due to a combination of random distributed feedback via Rayleigh scattering by natural refractive index inhomogeneities and distributed amplification through the Raman effect. Here we present a new type of a random fibre laser with a narrow (~1 nm) spectrum tunable over a broad wavelength range (1535-1570 nm) with a uniquely flat (~0.1 dB) and high (>2 W) output power and prominent (>40 %) differential efficiency, which outperforms traditional fibre lasers of the same category, e.g. a conventional Raman laser with a linear cavity formed in the same fibre by adding point reflectors. Analytical model is proposed that explains quantitatively the higher efficiency and the flatter tuning curve of the random fiber laser compared to conventional one. The other important features of the random fibre laser like "modeless" spectrum of specific shape and corresponding intensity fluctuations as well as the techniques of controlling its output characteristics are discussed. Outstanding characteristics defined by new underlying physics and the simplicity of the scheme implemented in standard telecom fibre make the demonstrated tunable random fibre laser a very attractive light source both for fundamental science and practical applications such as optical communication, sensing and secure transmission.

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Section: Efficiencysupporting

confidence: 53%

Broadly tunable high-power random fibre laser

et al. 2012

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“…The random distributed feedback (DFB) was provided by backward random Rayleigh scattering, and the amplification was produced by the stimulated Raman scattering (SRS) effect. Following this research, a number of works were published, in which the RDFLs have been designed to have characters of high efficiency and high power output [11,12], tunable [13,14], multi-wavelength [15,16], and polarized output [17,18].…”

Section: Introductionmentioning

confidence: 99%

Powerful narrow linewidth random fiber laser

Zhang

et al. 2016

Photonic Sens

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Abstract:In this paper, we demonstrate a narrow linewidth random fiber laser, which employs a tunable pump laser to select the operating wavelength for efficiency optimization, a narrow-band fiber Bragg grating (FBG) and a section of single mode fiber to construct a half-open cavity, and a circulator to separate pump light input and random lasing output. Spectral linewidth down to 42.31 GHz is achieved through filtering by the FBG. When 8.97 W pump light centered at the optimized wavelength 1036.5 nm is launched into the half-open cavity, 1081.4 nm random lasing with the maximum output power of 2.15 W is achieved, which is more powerful than the previous reported results.

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“…Up to date, a number of different schemes of random DFB fiber lasers were demonstrated [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] . Namely, random DFB fiber lasers can operate in different spectral bands 12,13 , emit higher order Stokes waves [12][13][14] , be tunable 22,23 and multiwavelength 15,19,21 .…”

Section: Introductionmentioning

confidence: 99%

“…Namely, random DFB fiber lasers can operate in different spectral bands 12,13 , emit higher order Stokes waves [12][13][14] , be tunable 22,23 and multiwavelength 15,19,21 . The noise level of random DFB fiber lasers could be lower than of conventional lasers 27 making them attractive for telecom applications.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the spectrum in a random distributed feedback fiber laser within the power balance modes

Vatnik

Churkin

2014

Laser Sources and Applications II

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The simplest model for a description of the random distributed feedback (RDFB) Raman fiber laser is a power balance model describing the evolution of the intensities of the waves over the fiber length. The model predicts well the power performances of the RDFB fiber laser including the generation threshold, the output power and pump and generation wave intensity distributions along the fiber. In the present work, we extend the power balance model and modify equations in such a way that they describe now frequency dependent spectral power density instead of integral over the spectrum intensities. We calculate the generation spectrum by using the depleted pump wave longitudinal distribution derived from the conventional power balance model. We found the spectral balance model to be sufficient to account for the spectral narrowing in the RDFB laser above the threshold of the generation.

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Effect of Rayleigh-scattering distributed feedback on multiwavelength Raman fiber laser generation

Cited by 125 publications

References 20 publications

Broadly tunable high-power random fibre laser

Broadly tunable high-power random fibre laser

Powerful narrow linewidth random fiber laser

Modeling of the spectrum in a random distributed feedback fiber laser within the power balance modes

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