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Properties of Tm 3+ ‐Doped Germanotellurite Glasses for S‐Band Amplifier
Author(s) -
Kishi Yuki,
Tanabe Setsuhisa
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00668.x
Subject(s) - doping , materials science , thermal stability , quantum efficiency , analytical chemistry (journal) , optical fiber , band gap , fiber amplifier , optical amplifier , mineralogy , wavelength , optics , optoelectronics , chemistry , physics , fiber laser , organic chemistry , chromatography , laser
Optical and material properties of (75− x )TeO 2 – x GeO 2 –20ZnO–5Na 2 O–0.1Tm 2 O 3 glasses were investigated as candidate materials for an S‐band Tm‐doped fiber amplifier (TDFA). With increasing GeO 2 content, the lifetime and the quantum efficiency of the 1.46 μm emission decreased slightly, while the emission bandwidth, the Vickers hardness, and thermal stability of the glass improved monotonically. Above 20 mol% GeO 2 , the quantum efficiency decreased more rapidly with increasing GeO 2 . We conclude that addition of a small amount of germania may improve material properties without deteriorating the optical properties of doped Tm 3+ , and thus the germanotellurite fiber may be a more reliable material for the S‐band TDFA in wavelength‐division‐multiplexing telecommunication.