Optical properties of erbium-doped silica fibers obtained by sol–gel method

Pawlik, E.M.; Stręk, W.; Dereń, P.J.; Wójcik, Jan; Malaskevich, G.E.; Гайшун, В. Е.

doi:10.1016/s1386-1425(98)00195-4

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…Up to now, for such a concentration (900 ppm), it was not possible to avoid the clustering of Er 3+ ions inside the pure silica prepared by conventional melting and MCVD or colloidal sol-gel methods [14,25]. In the literature, there is only one report of conventional optical fibers doped with erbium prepared using colloidal sol-gel route, However, these fibers presented a high attenuation in the IR spectral range, preventing their use as amplifier media [26]. The PCFs drawn from rods SiO 2 Er1 and SiO 2 Er3, using the same process as for undoped PCF, were named PCFEr1 and PCFEr3 respectively.…”

Section: Pure Sol-gel Silica Core Pcfmentioning

confidence: 99%

From molecular precursors in solution to microstructured optical fiber: a Sol-gel polymeric route

Hamzaoui¹,

Bigot²,

Bouwmans³

et al. 2011

Opt. Mater. Express

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Section: Pure Sol-gel Silica Core Pcfmentioning

confidence: 99%

From molecular precursors in solution to microstructured optical fiber: a Sol-gel polymeric route

Hamzaoui¹,

Bigot²,

Bouwmans³

et al. 2011

Opt. Mater. Express

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“…Terbium(III) shows green luminescence and the samarium(III) ion shows an orange emission color as well as near-infrared emission. Recently much effort was devoted to near-infrared luminescence of erbium(III) and neodymium(III) in silica-based materials [12][13][14][15][16][17][18]. Those materials are interesting because they show intense 4f-4f transitions that lie in the range of the 1300-1600 nm telecommunication window.…”

Section: Introductionmentioning

confidence: 99%

Study of the luminescence of tris(2-thenoyltrifluoroacetonato)lanthanide(III) complexes covalently linked to 1,10-phenanthroline-functionalized hybrid sol–gel glasses

Lenaerts

Ryckebosch

Driesen

et al. 2005

Journal of Luminescence

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The solubility and uniform distribution of lanthanide complexes in sol-gel glasses can be improved by covalently linking the complexes to the sol-gel matrix. In this study, several lanthanide b-diketonate complexes (Ln ¼ Nd, Sm, Eu, Tb, Er, Yb) were immobilized on a 1,10-phenanthroline functionalized sol-gel glass. For the europium(III) complex, a sol-gel material of diethoxydimethylsilane (DEDMS) with polymer-like properties was derived. For the other lanthanide complexes, the sol-gel glass was prepared by using a matrix of tetramethoxysilane (TMOS) and DEDMS. Both systems were prepared under neutral reaction conditions. High-resolution emission and excitation spectra were recorded. The luminescence lifetimes were measured. r

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“…The most common method to decrease the degree of quenching is to calcine the sol−gel materials at high temperatures (>900 °C). This method has successfully been demonstrated for sol−gel-processed glasses, optical fibers, and thin films. − Different glass compositions (e.g. SiO 2 , SiO 2 −TiO 2 , SiO 2 −Al 2 O 3 , SiO 2 −TiO 2 −P 2 O 5 ) in addition to silica have been used in attempts to enhance the luminescence. ,− A disadvantage of such lanthanide-doped glasses is the low absorbance of the lanthanides .…”

Section: Introductionmentioning

confidence: 99%

“…This method has successfully been demonstrated for sol-gelprocessed glasses, optical fibers, and thin films. [12][13][14] Different glass compositions (e.g. SiO 2 , SiO 2 -TiO 2 , SiO 2 -Al 2 O 3 , SiO 2 -TiO 2 -P 2 O 5 ) in addition to silica have been used in attempts to enhance the luminescence.…”

Section: Introductionmentioning

confidence: 99%

Near-Infrared Luminescence of Lanthanide Calcein and Lanthanide Dipicolinate Complexes Doped into a Silica−PEG Hybrid Material

et al. 2004

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The near-infrared luminescence of lanthanide complexes of 4′, 5′-bis[N,N-bis(carboxymethyl)aminomethyl]fluorescein (calcein) and pyridine-2,6-dicarboxylic acid (dipicolinic acid, dpa) doped in a hybrid sol-gel material was investigated. The silica-poly(ethylene glycol) (silica-PEG) inorganic-organic materials were prepared at a neutral pH. The lanthanide ions are well shielded from the environment by the calcein and dpa ligands, and the complexes are stable in the sol-gel matrix after preparation. The dysprosium and neodymium dipicolinate complexes showed near-infrared luminescence (NIR-luminescence) by direct excitation to the 4f-levels. The ytterbium dipicolinate complex doped in the sol-gel showed NIR-luminescence by excitation of the ligand in the UV region. All other tested lanthanide ions (Ln ) Pr, Sm, Er, Ho) did not show luminescence. Neodymium and ytterbium complexes with calcein show intense NIR-luminescence when the ligand is excited by visible light. The corresponding erbium complex doped in the silica-PEG matrix also showed NIR-luminescence at 1525 nm. No NIR-luminescence could be detected for the other lanthanide complexes doped in the matrix (Ln ) Pr, Sm, Dy, Ho). IntroductionThe sol-gel process allows the preparation of silicabased or siloxane-based materials at ambient temperatures. Pure silica glasses doped with lanthanide complexes can be made by hydrolysis and polymerization of silicon alkoxides. 1,2 The resulting glasses are transparent and have good mechanical properties. However, these materials have some drawbacks, such as the low solubility of lanthanide complexes in the sol-gel matrix at the low pH needed for the hydrolysis reaction. 2,3 One way to overcome these solubility problems is to neutralize the solution after hydrolysis and to introduce organic components in the material. The properties of the inorganic-organic hybrid materials depend on the chemical nature of the different constituents. 4,5 Poly-(ethylene glycol) (PEG) can be introduced in a silica matrix by simply mixing PEG with the silica precursors, but no covalent bonds are formed between the PEG chains and the silica backbone. 6,7 The solubility of lanthanide complexes can be improved by performing the sol-gel synthesis in a buffered solution. 8

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Optical properties of erbium-doped silica fibers obtained by sol–gel method

Cited by 8 publications

References 6 publications

From molecular precursors in solution to microstructured optical fiber: a Sol-gel polymeric route

From molecular precursors in solution to microstructured optical fiber: a Sol-gel polymeric route

Study of the luminescence of tris(2-thenoyltrifluoroacetonato)lanthanide(III) complexes covalently linked to 1,10-phenanthroline-functionalized hybrid sol–gel glasses

Near-Infrared Luminescence of Lanthanide Calcein and Lanthanide Dipicolinate Complexes Doped into a Silica−PEG Hybrid Material

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