Comparative study of ring and random cavities for fiber lasers

Fernández-Vallejo, M.; Rota-Rodrigo, Sergio; Lopez-Amo, M.

doi:10.1364/ao.53.003501

Cited by 12 publications

(6 citation statements)

References 29 publications

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“…The functionalities of these systems can be extended further to time division multiplexed architectures, given the fact that, in comparison to linear or ring laser cavities, no distortion of the modulating frequency or self-mode-locking effects have been observed in these systems upon fast modulation of cavity losses [106,165]. Important applications of random fiber lasers can be found in imaging [15].…”

Section: Discussionmentioning

confidence: 99%

Recent advances in fundamentals and applications of random fiber lasers

et al. 2015

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Doc. ID 239686)Random fiber lasers blend together attractive features of traditional random lasers, such as low cost and simplicity of fabrication, with high-performance characteristics of conventional fiber lasers, such as good directionality and high efficiency. Low coherence of random lasers is important for speckle-free imaging applications. The random fiber laser with distributed feedback proposed in 2010 led to a quickly developing class of light sources that utilize inherent optical fiber disorder in the form of the Rayleigh scattering and distributed Raman gain. The random fiber laser is an interesting and practically important example of a photonic device based on exploitation of optical medium disorder. We provide an overview of recent advances in this field, including high-power and high-efficiency generation, spectral and statistical properties of random fiber lasers, nonlinear kinetic theory of such systems, and emerging applications in telecommunications and distributed sensing.

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Section: Discussionmentioning

confidence: 99%

Recent advances in fundamentals and applications of random fiber lasers

et al. 2015

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“…It is worth noticing that in this experiment SLM behavior is not preserved due to the extremely long cavity. In fact, the concept of resonator modes in this type of ultra-long cavity lasers is not clearly defined and many studies have been recently published addressing it [23,24]. Nevertheless, it is beyond the scope of this study to cover this subject in detail.…”

Section: Remote Sensing Applications Using Raman Amplificationmentioning

confidence: 98%

Experimental study of the SLM behavior and remote sensing applications of a multi-wavelength fiber laser topology based on DWDMs

et al. 2015

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microwave photonics [1]. Several approaches have been employed to implement SLM operation in EDFLs, such as short linear cavity distributed Bragg reflector fiber lasers, fiber distributed feedback lasers, fiber ring lasers or Sagnac configurations [2,3] with different ring cavity topologies. However, the fiber ring laser unavoidably generates an enormous number of densely spaced longitudinal modes lying beneath the erbium gain profile due to the required intracavity optical components, connecting fibers, and a rather long cavity length. Thus, fiber ring lasers usually perform unstably with a larger linewidth due to the multimode oscillation, mode competition, and hopping. Several previous studies proposed by the authors [2,4] show that a single-mode operation of these laser systems in the C-band can be achieved when we emit simultaneously more than one wavelength using special ring cavity configurations.On the other hand, the utilization of CWDM techniques in sensors multiplexing enhances the power budged, and scalability of the network is possible in combination with DWDM techniques or ordinary couplers as stated in [5,6].Optical amplification techniques, and particularly, doped fiber amplifiers supposed a revolution for optical fiber systems [7]. Moreover, the use of Raman amplification also enabled the remote sensor operation, increasing the number of sensors per fiber on the network [7-9]. The optimum configuration of the amplifier employed in a sensor network strongly depends on the system topology, the number of sensors and the multiplexing technique [10].Investigation in remote sensing is under way with a few approaches of ultra-long-distance fiber Bragg gratings sensor systems using tunable filters or different interrogation techniques which reach as far as 250 km [11]. However, these systems have restrictive multiplexing capabilities (e.g., sensors can be located only at the end of the fiber) and do not allow a real-time monitoring. This is because Abstract In this work, two different multi-wavelength fiber ring laser configurations have been proposed and experimentally demonstrated. The aim of this paper is to show the versatility of the MUX/DMUX device for designing fiber lasers. That was carried out by enhancing the performance of two intrinsically different fiber lasers: an EDF in single longitudinal-mode (SLM) operation and an ultralong cavity multi-wavelength Raman laser for remote sensing applications. The main objective of the first experimental setup is to generate SLM emission lines with linewidths as narrow as possible. That was carried out by using the interaction between the reflected signals from the FBGs and the transmitted signal from the corresponding PS-FBG in each transmission band. The second topology consists of a multi-wavelength fiber laser for remote sensing applications by using Raman amplification where sensors located 100 km away from the receiver have been measured. As a remarkable improvement from other remote sensing systems, the sensors can be located at any place of the fi...

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“…Sensing is also a promising field of application of random DFB lasers with a number of works published on this subject during the last years [11]- [14]. Together with the broadband gain and high stability, the absence of mode competition and mode hopping in Raman scattering based random lasers due to its mode-less behavior [15] is of special interest in the design of multi-wavelength lasers. Numerous works have been published in this regard, using Sagnac interferometers [16], [17], Fabry-Perot filters (FPF) [18], [19], a Lyot filter [20] or a long-period fiber gratings-based Mach-Zehnder interferometer combined with a FFP [21] to select the lasing wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Narrow-Linewidth Multi-Wavelength Random Distributed Feedback Laser

Leandro

Rota-Rodrigo

Ardanaz

et al. 2015

J. Lightwave Technol.

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In this paper, narrow-band emission lines are generated by means of two random distributed feedback fiber laser schemes. Spectral line-widths as narrow as 3.2 pm have been measured, which significantly improves previous reported results. The laser is analyzed with the aim of obtaining a spectral line-width as narrow as possible. Additionally a variation of this setup for multiwavelength operation is also validated. Both schemes present a simple topology that use a combination of phase-shifted fiber Bragg gratings and regular fiber Bragg gratings as filtering elements.Index Terms-Distributed feedback laser, fiber laser, random laser, Rayleigh scattering, stimulated Raman scattering.

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Comparative study of ring and random cavities for fiber lasers

Cited by 12 publications

References 29 publications

Recent advances in fundamentals and applications of random fiber lasers

Recent advances in fundamentals and applications of random fiber lasers

Experimental study of the SLM behavior and remote sensing applications of a multi-wavelength fiber laser topology based on DWDMs

Narrow-Linewidth Multi-Wavelength Random Distributed Feedback Laser

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