GeO2-Core/SiO2-cladding optical fibers made by MCVD process for stimulated raman applications

Peder-Gothóni, A. M.; Leppihalme, M.

doi:10.1007/bf00694773

Cited by 11 publications

(6 citation statements)

References 16 publications

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“…The produced fibre had a maximum core concentration of 45 mol % of GeO 2 due to vaporisation of the core and diffusion of the substrate during the drawing stage [PG87]. Such problems originally arose due to the differences in the thermal expansion coefficients between the core and cladding and by the temperature dependencies of viscosity of these glass-substrates (4 orders of magnitude higher than the core).…”

Section: Modified Chemical Vapour Deposition (Mcvd)mentioning

confidence: 99%

New materials, regimes and applications of fibre laser techonology

Zhang,

Ferrari,

Obraztsova

et al. 2014

International Photonics and OptoElectronics Meetings

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Nonlinear optics enables the manipulation of spectral and temporal characteristics of optical pulses interacting with a dielectric medium. Optical fibres, as a uniquely practical medium, provide an environment for effectively exploiting the nonlinear effects. This has facilitated the rapid growing interest in this field focused on the investigation of fibrebased sources incorporated with various novel saturable absorber devices for ultrashort pulse generation.This thesis reports a series of experiments exploring the ongoing research in the field of nonlinear optics, including the development of ultrafast mode-locked fibre sources and their applications in supercontinumm generation and third order parametric interactions in new carbon materials.Firstly, the integration of carbon-based materials with rare-earth doped media allows the demonstration of ultrafast mode-locked laser sources operating at wavelengths across the near-infrared region in a compact, low cost and environmentally robust scheme.Power scaling of such sources can be achieved by operating in the all-normal dispersion regime making use of a glass-substrate saturable absorber device that exhibits a higher damage threshold.Supercontinuum generation has been used as an effective method for spectral broadening. Pumping with a conceptually simple and reliable fibre-based system, a continuum covering from 2 to 3 µm is generated in a highly nonlinear GeO 2 fibre. This experiment demonstrates a robust and long-term stable source of radiation in an important band, coincident with a portion of the atmospheric transmission window.Finally, the demonstration of a simple and compact nano-material based dual-wavelength system shows the performance of such devices as a simultaneous saturable absorber and passive synchroniser. An experimental study of coherent frequency mixing at large frequency shifts in a graphene sample, pumped by a two-colour fibre-integrated source, proves the strong nonlinear response of this new carbon material. Woodward who not only provided company inside and outside of the lab, but were also happy to discuss and help all matters of my work and life in UK. In particular, I would like to thank Ed for providing me with much needed support, interesting discussions (especially on food and culture) and continued collaboration since I joined the group. Tim, for making couplers for the Tm-system. Thanks to Tim, Robbie (shared the same office over the past three years!), Ed, and Rob for endless support, spending hours and hours proof reading chapters of this thesis and cheering me up all the time. Thanks to the visitor from A*STAR (Singapore), Dr. Dora Hu (more like a sister), for proof reading and encouraging me to relax during the thesis writing.

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Section: Modified Chemical Vapour Deposition (Mcvd)mentioning

confidence: 99%

New materials, regimes and applications of fibre laser techonology

Zhang,

Ferrari,

Obraztsova

et al. 2014

International Photonics and OptoElectronics Meetings

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“…It should be noted that in the early 1980s germania fibers were considered as a promising low-loss medium for optical communication and many papers were published devoted to the fabrication of low-loss GeO 2 -based fibers, the measurements of main fiber characteristics, and the investigation of nonlinear optical phenomena, primarily, Raman scattering [59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76].…”

Section: Geo 2 -Based Raman Fibersmentioning

confidence: 99%

“…Various techniques of fiber fabrication were used, including VAD [62-64, 66, 68, 69], MCVD [75], VAD/OVD [72], and rod-in-tube [76]. Various techniques of fiber fabrication were used, including VAD [62-64, 66, 68, 69], MCVD [75], VAD/OVD [72], and rod-in-tube [76].…”

Section: Geo 2 -Based Raman Fibersmentioning

confidence: 99%

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Raman Amplifiers for Telecommunications 1

Islam¹

2004

Springer Series in Optical Sciences

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provides an expanding selection of research monographs in all major areas of optics: lasers and quantum optics, ultrafast phenomena, optical spectroscopy techniques, optoelectronics, quantum information, information optics, applied laser technology, industrial applications, and other topics of contemporary interest.With this broad coverage of topics, the series is of use to all research scientists and engineers who need up-to-date reference books. The editors encourage prospective authors to correspond with them in advance of submitting a manuscript. Submission of manuscripts should be made to the Editor-in-Chief or one of the Editors. See also

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“…% GeO 2 had optical losses of more than 100 dB͞km. 6 Single-mode (SM) GeO 2based-core fibers were fabricated by a rod-in-tube technique, with optical losses of 400 dB͞km at 1.06 mm. 3 We report on the development of SM MCVD f ibers composed of a core with a GeO 2 concentration of as much as 97 mol.…”

mentioning

confidence: 99%

Germania-glass-core silica-glass-cladding modified chemical-vapor deposition optical fibers: optical losses, photorefractivity, and Raman amplification

et al. 2004

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Germania-glass-core silica-glass-cladding single-mode fibers (deltan as great as 0.143) with a minimum loss of 20 dB/km at 1.85 microm were fabricated by modified chemical-vapor deposition. The fibers exhibit strong photorefractivity, with type IIa index modulation of 2 x 10(-3). A Raman gain of 300 dB/(kmW) was determined at 1.12 microm. Only 3 m of such fibers is sufficient for constructing the 10-W Raman laser at 1.12 microm with a 13-W pump at 1.07 microm.

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GeO2-Core/SiO2-cladding optical fibers made by MCVD process for stimulated raman applications

Cited by 11 publications

References 16 publications

New materials, regimes and applications of fibre laser techonology

New materials, regimes and applications of fibre laser techonology

Raman Amplifiers for Telecommunications 1

Germania-glass-core silica-glass-cladding modified chemical-vapor deposition optical fibers: optical losses, photorefractivity, and Raman amplification

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