Random spaced index modulation for a narrow linewidth tunable fiber laser with low intensity noise

Li, Yang; Lu, Ping; Bao, Xiaoyi; Ou, Zhonghua

doi:10.1364/ol.39.002294

Cited by 47 publications

(12 citation statements)

References 23 publications

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“…A similar improvement in noise performance was also noted in a bidirectionally pumped Brillouin random laser [76] and in a tunable ring fiber laser based on a random fiber Bragg grating [146], as shown in Fig. 29.…”

Section: Random Fiber Laser For Telecommunication Applicationssupporting

confidence: 71%

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: Random Fiber Laser For Telecommunication Applicationssupporting

confidence: 71%

Recent advances in fundamentals and applications of random fiber lasers

et al. 2015

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“…For some practical application fields such as coherent sensing and detection, suppressing the linewidth is required to increase the system performance. Ultra-narrow lasing has been reported in a coherent Brillouin random fiber laser [22,23]. As for RDFLs based on Rayleigh scattering and Raman amplification, laser generation with a narrow linewidth down to 0.05 nm through filtering by the FBG was demonstrated in [5], and the corresponding highest output power approached 100 mW level.…”

Section: Introductionmentioning

confidence: 96%

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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“…RFGs can also provide distributed random feedback for random fiber lasers to improve their performance. A narrow linewidth low-intensity noise tunable fiber laser with Erbium-doped gain was realized by introducing randomly spaced index modulations on a standard 2 of 12 telecommunication single-mode fiber [9]. A multi-wavelength Brillouin random fiber laser could be achieved via distributed feedback from a RFG [10].…”

Section: Introductionmentioning

confidence: 99%

Random Fiber Grating Characterization Based on OFDR and Transfer Matrix Method

Zhou

Chen

et al. 2020

Sensors

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Random fiber gratings (RFGs) have shown great potential applications in fiber sensing and random fiber lasers. However, a quantitative relationship between the degree of randomness of the RFG and its spectral response has never been analyzed. In this paper, two RFGs with different degrees of randomness are first characterized experimentally by optical frequency domain reflectometry (OFDR). Experimental results show that the high degree of randomness leads to low backscattering strength of the grating and strong strength fluctuations in the spatial domain. The local spectral response of the grating exhibits multiple peaks and a large peak wavelength variation range when its degree of randomness is high. The linewidth of its fine spectrum structures shows scaling behavior with the grating length. In order to find a quantitative relationship between the degree of randomness and spectrum property of RFG, entropy was introduced to describe the degree of randomness induced by period variation of the sub-grating. Simulation results showed that the average reflectivity of the RFG in dB scale decreased linearly with increased sub-grating entropy, when the measured wavelength range was smaller than the peak wavelength variation range of the sub-grating. The peak reflectivity of the RFG was determined by κ2LΔP (where κ is the coupling coefficient, L is the grating length, ΔP is period variation range of the sub-grating) rather than κL when ΔP is larger than 8 nm in the spatial domain. The experimental results agree well with the simulation results, which helps to optimize the RFG manufacturing processes for future applications in random fiber lasers and sensors.

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Random spaced index modulation for a narrow linewidth tunable fiber laser with low intensity noise

Cited by 47 publications

References 23 publications

Recent advances in fundamentals and applications of random fiber lasers

Recent advances in fundamentals and applications of random fiber lasers

Powerful narrow linewidth random fiber laser

Random Fiber Grating Characterization Based on OFDR and Transfer Matrix Method

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