Phase-locking of a multicore fiber laser by wave propagation through an annular waveguide

Wrage, M.; Glas, P.; Fischer, D.; Leitner, Martin; Elkin, N. N.; Vysotsky, D. V.; Napartovich, Anatoly P.; Troshchieva, V.N.

doi:10.1016/s0030-4018(02)01299-3

Cited by 42 publications

(18 citation statements)

References 11 publications

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“…For larger distances the intermodal discrimination increases. On the other hand, when distance is large the Talbot resonator suffers strong losses due to radial diffraction [2,3]. …”

Section: Resultsmentioning

confidence: 99%

“…If radiation from all microcores is mutual coherent and laser resonator mirror is placed at the distance (1/2)Z T due to self-imaging provides good reflection. The comprehensive description of the self-imaging, mode selecting and possibility of phase--locking using Talbot cavity has been recently demonstrated [2,3,6]. …”

Section: Talbot Resonatormentioning

confidence: 99%

“…Multicore optical fibre (MCF) makes it possible to reduce the fibre length necessary to absorb the pump radiation and increase the maximum laser output power [1]. The major disadvantage of such construction of emitter array is low beam brightness [2,3]. It is caused by lack of coherence between radiation from individual cores.…”

Section: Introductionmentioning

confidence: 99%

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Multicore Optical Fibres for an External Talbot Cavity

2009

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In the paper the application of multicore optical fibres in phased-locked high power lasers is presented. The manufacturing and properties of multicore active optical fibres were presented. The thermally stable aluminosilicate glass doped with Nd 3+ (0.5 mol%) ions were melted and used as cores in manufactured multicore optical fibres. Two configurations of double clad multicore optical fibres with the circular array containing 15 and 30 Nd 3+ doped cores on ring inside a large pump clad were realized. Absorption and luminescence spectra of obtained glasses and fibres were presented. An external plane mirror located at certain distance of the array forms the basic Talbot cavity. The possibilities of mode selection and phase-locking by using Talbot resonator applied to fabricated multicore fibres were investigated.

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“…For larger distances the intermodal discrimination increases. On the other hand, when distance is large the Talbot resonator suffers strong losses due to radial diffraction [2,3]. …”

Section: Resultsmentioning

confidence: 99%

Section: Talbot Resonatormentioning

confidence: 99%

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Multicore Optical Fibres for an External Talbot Cavity

2009

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“…Li et al [8] fabricated an annular-core photonic-crystal fiber on a single material and found that this structure is suitable for both optical communications and optical sensing technologies. Such ACF waveguides provide an extra degree of freedom to control the propagation characteristics and also show the self-imaging effect [9][10][11] used for phase locking of a circular array of fiber lasers [12]. The ACF waveguide can also be used for sensor applications [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Distortions on an Annular Optical Fiber Waveguide

Shahi¹,

Kumar

Sharma

et al. 2014

J Russ Laser Res

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We present the modal analysis and dispersion curves of some asymmetric annular optical-fiber waveguides. The proposed cross-sections can be conceived as having the shape of a distorted annular circular waveguide and leads to a tolerance study of deformation in an annular optical-fiber waveguide. We obtain mathematical expressions for the modes of the proposed waveguides using boundary matching techniques under some logical assumptions. We observe that the proposed distortions are able to tune the cutoff values of annular circular waveguide at desired levels.

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“…To increase the non linear effect threshold, several solutions have already been experimented: Large Mode Area (LMA) fiber lasers [1][2][3], taper performing modal filtering [4], beam clean up by wave mixing in non linear materials [5]. An other attractive way consists in designing clad pumped multicore fiber lasers [6,7]. Because of a large overlap between doped cores and pump radiation, high pump absorption is achieved with these fiber lasers.…”

Section: Introductionmentioning

confidence: 99%