OSNR enhancement utilizing large effective area fiber in a multiwavelength Brillouin-Raman fiber laser

Shargh, R. Sonee; Al-Mansoori, M. H.; Anas, Siti Barirah Ahmad; Sahbudin, Ratna Kalos Zakiah; Mahdi, Mohd Adzir

doi:10.1002/lapl.201010110

Cited by 70 publications

(19 citation statements)

References 23 publications

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“…The strong interaction between the Brillouin pump and the other cavity modes results in turbulent waves. This random behavior later interacts with the laser lines within the specified wavelength range that leads to the reduction of the OSNR [24,25]. Also, the amplification of the cavity modes causes the increasing of the noise floor, so a low OSNR is observed in the above wavelength range.…”

Section: Resultsmentioning

confidence: 99%

A tunable self-seeded Brillouin/erbium fiber laser utilizing an asymmetrical twin core fiber based Mach–Zehnder interferometer

Peng¹,

Yan²,

Li³

et al. 2013

Laser Phys.

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A tunable self-seeded Brillouin/erbium fiber laser (BEFL) utilizing an asymmetrical twin core fiber based Mach-Zehnder interferometer (ATCF-MZI) is proposed and demonstrated. The proposed self-seeded BEFL has the advantage of being able to generate up to 17 output channels with high optical signal to noise ratio ( >10 dB). The Brillouin pump is self-seeded in the laser cavity instead of the extra Brillouin pumping. By bending the ATCF-MZI, an 8 nm wavelength-tunable range is achieved. This self-seeded BEFL shows linear tunability and good stability. Meanwhile, the experimental results indicate that the laser output with operation wavelength away from the free-running cavity mode has better output characteristics.

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Section: Resultsmentioning

confidence: 99%

A tunable self-seeded Brillouin/erbium fiber laser utilizing an asymmetrical twin core fiber based Mach–Zehnder interferometer

Peng¹,

Yan²,

Li³

et al. 2013

Laser Phys.

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“…As a result, the wavelength competition is very strong and dissallows a multi-wavelength generation regime. There are a number of different techniques to achieve multi-wavelength lasing operation: cooling with liquid nitrogen [9], four-wave mixing in photonic crystal fibers having high nonlinearity [10], nonlinear polarization rotation [11], introducing the stimulated Brillouin scattering effect [12] and so on. The ideas of mode competition suppression based on nonlinear effects are associated with the introduction of intensity-dependent loss.…”

Section: Introductionmentioning

confidence: 99%

Multi-wavelength gain-switched Yb-doped fiber laser

Drobyshev¹,

Volikova²,

Lobach³

et al. 2020

Laser Phys. Lett.

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We present a technique for suppression of wavelength competition in rare-earth -doped fiber lasers and for obtaining simultaneous lasing at tens (up to several hundred) of laser lines with wavelength spacing down to 50 pm. An ytterbium -doped fiber laser is used for experimental demonstration. Spectral selection is based on a built-in Lyot filter whose length can be selected to set suitable wavelength spacing. The measured linewidth for each of the generated lines is less than 100 pm and can be as little as 20 pm. The method for mode competition suppression is based on the gain-switching technique with modulated pump. At certain modulation parameters (amplitude, duration, and repetition rate), the laser generates a stable sequence of microsecond pulses with ~1 W peak power and ~4 µJ energy consisting of many longitudinal modes.

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“…Brillouin scattering has been demonstrated as a versatile tool in studying transparent media, such as optical fibers [1][2][3], air [4][5][6][7][8] and water [9][10][11]. The spectrum accuracy obtained from Brillouin scattering is important since the spectrum characteristics are related to many physical properties of the studied media.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis on the rapid measurement of a high precision Brillouin scattering spectrum in water using a Fabry–Pérot etalon

Zhang¹,

Fan²,

Ma³

et al. 2016

Laser Phys. Lett.

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The Brillouin lidar system with a Fabry-Pérot (F-P) etalon has been widely used in remote sensing to study ocean characteristics such as temperature, sound speed, etc. In this system, the measurement error stemming from the spectral broadening of an F-P etalon was typically neglected in applications where high measurement accuracy was not essential. In this paper, an integration method on radius and a convolution method on frequency are proposed to remove the broadening effect and improve the measurement accuracy, respectively. Experiments of underwater Brillouin scattering show that both fitting methods effectively reduce the measurement error due to the transmission function of an F-P etalon. A temperature accuracy of 0.1 °C and a salinity accuracy of 0.5‰ were achieved. Moreover, with the convolution method, the computational cost was reduced to 3 s, which enables rapid measurement of Brillouin shift and linewidth and makes the on-line remote sensing applications possible.

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OSNR enhancement utilizing large effective area fiber in a multiwavelength Brillouin-Raman fiber laser

Cited by 70 publications

References 23 publications

A tunable self-seeded Brillouin/erbium fiber laser utilizing an asymmetrical twin core fiber based Mach–Zehnder interferometer

A tunable self-seeded Brillouin/erbium fiber laser utilizing an asymmetrical twin core fiber based Mach–Zehnder interferometer

Multi-wavelength gain-switched Yb-doped fiber laser

Experimental analysis on the rapid measurement of a high precision Brillouin scattering spectrum in water using a Fabry–Pérot etalon

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