Fibre lasers - conditioning constructional and technological

Zając, Andrzej; Dorosz, Dominik; Kochanowicz, Marcin; Skórczakowski, Marek; Świderski, Jacek

doi:10.2478/v10175-010-0048-9

Cited by 12 publications

(14 citation statements)

References 26 publications

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“…Actually both sensors with internal and external transformation are being intensive developed [18][19][20][21][22][23][24]. In the case of sensors with internal transformation the magnetooptically sensitive element is the optical fibre itself.…”

Section: Optical Fibre Magnetic Field Sensor With External Transformamentioning

confidence: 99%

Optical fibre current sensor for electrical power engineering

Barczak¹

2011

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. The paper presents the experimental results of the investigations of optical fibre current sensors with an external transformation. The head of the sensor is made of the glass which has a high value of the Verdet constant. The sensor was built on the glass bar (with high value of the Verdet coefficient), polarisers, plastic optical fibres, a light source and a detector module. The paper deals with magnetic field measurements of two types of electrical current conductors: a typical conductor with circular cross-section and a busduct. Output signals from the optical current sensor were displayed on the digital oscilloscope and memorized in µComp for a further analysis. This type of sensor was investigated on a laboratory stand and on an electrical power line which included conductor where the high intensity electric current flow. The constructed optoelectronic current sensor was tested for detection of current with intensity of the order of 200 A, with an accuracy of a few percent. Practically, the upper border of the current detection by means of this sensor is much higher.

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Section: Optical Fibre Magnetic Field Sensor With External Transformamentioning

confidence: 99%

Optical fibre current sensor for electrical power engineering

Barczak¹

2011

Bulletin of the Polish Academy of Sciences: Technical Sciences

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“…spectrally close to the generation or amplification band of the considered ytterbium-doped medium. For the same reason, separation of pumping and generation signals may become an important issue in design of high-energy laser systems [3]. Practically, the discussed class of laser systems makes almost exclusive use of silica glass.…”

Section: Introductionmentioning

confidence: 99%

Active optical fibres for application in laser and broadband ASE sources

Dorosz¹,

Dorosz²,

Zając³

et al. 2012

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. The article brings into focus the present state of technology employing active fibres doped with rare earth (RE) ions for applications requiring power supply of several dozen watts and broadband ASE sources. Current trends in development of glasses and in construction of active fibres used in fibre sources of radiation within VIS-NIR range are presented. Technological constraints in the doping of fibre core glasses are discussed, with particular consideration of optimal RE concentration for technical applications. Characteristics of glasses are offered, and the glasses are used for manufacturing optical fibres with luminescence within the visible as well as near-and mid-infrared ranges. Also, requirements and luminescence properties concerning glasses co-doped with e.g. Nd 3+ /Yb 3+ ,Tm 3+ /Ho 3+ and Yb 3+ /Tb 3+ are discussed. Results of research on the impact of technological parameters of glass matrices on luminescence properties of core glasses and optical fibres are quoted. For the doped glasses of which luminescence in a wide spectral range is desired, conditions for their processing into optical fibre systems are mentioned. Additionally, the impact of phonon energy in the glass on producing emission in a specified spectral range is analyzed. Furthermore, the article presents directions of technological studies to solve problems persisting in the phase of glass matrix design, as well as in determining the influence of fibre drawing process on the luminescence properties of core glasses and optical fibres, confirming the differences in luminescence stemming from the drawing process. Finally, some original designs of core glasses and active multicore fibre systems devised for construction of fibre radiation sources are presented.

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“…It has been shown that the choice of the glassy matrix for production of the active fiber has a crucial impact on its spectroscopic properties. For example aluminosilicate optical fibers working on the spectral range of 1 µm were presented [2,3] and the main advantage of the proposed host was the lower RE clustering effect, which in consequence allowed to obtain a luminescence emission gain over a shorter length of a fiber [4]. Double-clad multicore optical fibers, which have been introduced in recent years, offer new possibilities in the field of short-length fiber lasers design [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Development of rare -earth doped optical fibers and laser diode pumping techniques enabled to produce high-power fiber lasers, telecommunication amplifiers and amplified spontaneous emission (ASE) sources with a very good quality of the radiation beam [1][2][3][4][5]. In particular the modified chemical vapour deposition (MCVD) method has played an essential role in high quality double clad silica optical fibers [6,7].…”

Section: Introductionmentioning

confidence: 99%

Novel constructions of optical fibers doped with rare – earth ions

Dorosz¹

2014

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. In the paper the research on rare-earth doped and co-doped optical fibre conducted in the Laboratory of Optical Fiber Technology at the Bialystok University of Technology is presented. Novel active fibre constructions like multicore, helical-core and side detecting ribbon/core optical fibers were developed with a targeted focus into application. First construction i.e. multicore RE doped optical fibers enable supermode generation due to phase -locking of laser radiation achieved in a consequence of exchanging radiation between the cores during the laser action. In the paper a far -field pattern of 19 -core optical fiber-doped with Yb 3+ ions, registered in the MOFPA system, showed centrally located peak of relatively high radiation intensity together with smaller side-lobes. Another new construction presented here is helical-core optical fibers with the helix pitch from several mm and the off-set ranging from 10 µm to 200 µm. The properties of helical-core optical fiber co-doped with Nd 3+ /Yb 3+ were also discussed. In the field of sensor applications novel construction of a sidedetecting luminescent optical fiber for an UV sensor application has been presented. The developed optical fiber with an active core/ribbon, made of phosphate glass doped with 0.5 mol% Tb 3+ ions, was used as a UV sensing element.

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Fibre lasers - conditioning constructional and technological

Cited by 12 publications

References 26 publications

Optical fibre current sensor for electrical power engineering

Optical fibre current sensor for electrical power engineering

Active optical fibres for application in laser and broadband ASE sources

Novel constructions of optical fibers doped with rare – earth ions

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