Leakage channel fibers with microstuctured cladding elements: A unique LMA platform

Dasgupta, Sonali; Hayes, J. R.; Richardson, David J.

doi:10.1364/oe.22.008574

Cited by 20 publications

(9 citation statements)

References 20 publications

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“…Typically, an important branch of geometric structure engineering is promoting the resonance between HOMs in the central core and the lateral structures, for example, the trench-assisted fibers [32, 34, 38-40, 42, 206-222], chirally coupled-core fibers (CCCF) [29,[43][44][45][217][218][219][220][221][222][223][224][225][226][227][228][229][230][231][232][233][234][235], leakage channel fibers [30,[230][231][232][233][234][235][236][237][238][239][240][241][242][243][244][245], and large pitch fibers [31,246,247], etc. Compared with conventional SIFs, the cladding regions of these functional fibers are modified to non-uniform structures with lateral structures surrounding the central core, leading to a resonant coupling of the HOMs in the main core into the lateral structures.…”

Section: Geometric Structures Engineeringmentioning

confidence: 99%

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

et al. 2022

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The success of high-power fiber lasers is fueled by maturation of active and passive fibers, combined with the availability of high-power fiber-based components. In this contribution, we first overview the enormous potential of rare-earth doped fibers in spectral coverage and recent developments of key fiber-based components employed in high-power laser systems. Subsequently, the emerging functional active and passive fibers in recent years, which exhibit tremendous advantages in balancing or mitigating parasitic nonlinearities hindering high-power transmission, are outlined from the perspectives of geometric and material engineering. Finally, novel functional applications of conventional fiber-based components for nonlinear suppression or spatial mode selection, and correspondingly, the high-power progress of function fiber-based components in power handling are introduced, which suggest more flexible controllability on high-power laser operations. Graphical abstract

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Section: Geometric Structures Engineeringmentioning

confidence: 99%

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

et al. 2022

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“…Such rod-type fibers generally should be kept straight to avoid bend distortion, so it is not compact in practical applications. The leaky channel PCF offers a better bend tolerance with the potential of single-mode output and large mode area [69] . Depending on the surrounding region, there are mainly three approaches to realize effective single-mode LMA operation [70] .…”

Section: Single-mode Operationmentioning

confidence: 99%

Development and prospect of high-power doped fibers

Wang

Chen

2018

High Pow Laser Sci Eng

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Ytterbium-doped fibers have become the optimum gain media of high-power fiber lasers thanks to a simple energy structure, which strongly reduces the excited state absorption, and a low quantum defect and a high optic-optic conversion efficiency, which means the low thermal load. In this paper, we take a review of the current state of the art in terms of Yb 3+ doped fibers for high-power fiber lasers, including the development of the fabrication techniques. The research work to overcome the challenges for Yb 3+ doped fibers, which affect the stability of output power and beam quality, will be demonstrated. Direction of further research is presented and the goal is to look for a fiber design, to boost single fiber output power, stabilize the laser power and support robust single-mode operation.

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“…The world manufacturers of FOSs are Siemens (Germany), Backer Hughes (USA), Halliburton (USA), Schlum-berger (USA) Emerson Electric Co. (USA), and Russian enterprises "Omega", "Optolink", "Intel-Systems". The volume of the FOD sales market for extreme conditions, according to estimates by the American business consulting company Frost & Sullivan (USA), in 2011 amounted to about $ 1,200 billion and, according to the forecast, by 2020 will grow to $ 8.5 billion [1].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional fiber-optic sensors for space infrastructure

Mikhailov

Ualiyev

Kabdoldina

et al. 2021

EEJET

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Sensors used in rocket and space technology are subject to extreme external influences in terms of temperature, vibration, and shock. Therefore, the choice of the type of sensors is justified precisely by the resistance to such factors, as well as the ability to ensure the temporal and parametric stability of measurements. A new type of sensors – fiber-optic ones – meets these conditions. The basis for the selection and further improvement of such sensors were such requirements as minimum power consumption, high accuracy and stability of measurements, the ability to combine several measurements in one sensor. It is noted that for space infrastructure the factor of the possibility of simultaneous measurement of several parameters with one sensor is one of the important quality indicators. This is due to the possibility of reducing the number of sensors themselves, which reduces the mass and size parameters of space technology. This applies, first of all, to measurements of pressure and temperature, since they, in aggregate, account for at least 40 % of all measurements in space products. The path of choos-ing the types of methods and sensor designs led to the combination of the amplitude conversion method and optical communication in one sensor. In this case, amplitude modulation of pressure and temperature is carried out by a microelec-tromechanical unit (module), and the modulated optical signal is transmitted by an optical module. Such a modular composition of the sensor makes it possible to dispense with optical ana-lyzers (interrogators) and carry out further pro-cessing based on standard interfaces. A limitation of the proposed methods and designs is the need for microelectromechanical structures that measure certain physical quantities. Such structures for fiber-optic sensors are not mass-produced; therefore, their manufacture can be established at instrument-making enterprises with microelectronic equipment

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Leakage channel fibers with microstuctured cladding elements: A unique LMA platform

Cited by 20 publications

References 20 publications

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

Functional Fibers and Functional Fiber-Based Components for High-Power Lasers

Development and prospect of high-power doped fibers

Multifunctional fiber-optic sensors for space infrastructure

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