Rare-earth doped chalcogenide glasses for fiber-optic amplifiers
SCIE
SCOPUS
- Title
- Rare-earth doped chalcogenide glasses for fiber-optic amplifiers
- Authors
- Heo, J
- Date Issued
- 2003-10-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Emission properties associated with the fiber-optic 6 amplification in Ge-Ga-S-CsBr glasses were investigated. The intensity of the 1.31 mum emission from Dy3+ (F-6(11/2) . H-6(9/2) --> H-6(15/2)) increased sharply when the appropriate concentrations of alkali halides were added, at the expense of the 1.75 mum emission intensity (H-6(11/2) --> H-6(11/2)). The lifetimes of the 1.31 mum emission level also increased up to 1580 mus. A small amount of As was added to increase the resistivity against the recrystallization during re-heating. The optimum composition for practical usage was 0.7[Ge0.25As0.10S0.65]-0.15GaS(3/2)-0.15CsBr. Phonon side band showed that the several local phonon modes, with the frequencies around 100 cm(-1), were coupled to 4f electrons of Eu3+. The nearest neighbors of Eu3+ ions are composed of halogen ions that are part of well-structured complex such as tetrahedral [GaS3/2Br](-) subunit and/or Ga2Br6. (C) 2003 Elsevier B.V. All rights reserved.
- Keywords
- MU-M EMISSION; GA-S GLASSES; MULTIPHONON RELAXATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18341
- DOI
- 10.1016/S0022-3093(03)00448-4
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 326, page. 410 - 415, 2003-10-01
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