Properties of Tm3+-doped tellurite glasses for 1.4-um amplifier

Setsuhisa Tanabe

doi:10.1117/12.424764

27 April 2001 Properties of Tm³⁺-doped tellurite glasses for 1.4-μm amplifier

Setsuhisa Tanabe

Proceedings Volume 4282, Rare-Earth-Doped Materials and Devices V; (2001) https://doi.org/10.1117/12.424764
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Recent studies on optical properties of Tm³⁺-doped tellurite glasses are presented as candidate materials of 1.4 micrometers amplifier. Usually, non-oxide fiber hosts with lower phonon energy are required, because the initial ³H₄ level is easily quenched in high-phonon-energy environment. However, the restriction is not so server as that of the Pr³⁺:¹G₄ for 1.3(Mu) M amplifiers due to the moderate energy gap. The Judd-Ofelt analysis showed 96 percent quantum efficiency in a tellurite host. To overcome the problem of intensity amplified spontaneous emission of competitive 0.80micrometers transition from the initial ³H₄ level, an Nd-doped cladding was proposed utilizing a strong absorption band. Improved emission was obtained as a result of radiative energy transfers between Tm³⁺ and Nd³⁺ ion. Also, the effect of codopants, such as Eu³⁺, Tb³⁺, Ho³⁺, on the lifetime of the Tm³⁺-levels was investigated for efficient population inversion between the ³H₄ and ³F₄. The Ho³⁺ showed the best selectivity in quenching effect. Owing to its quantum efficiency and better fiberizability than fluorides, the Tm-doped tellurite glass can be a potential candidate of the amplifier at the S⁺-band in the WDM telecommunication.

Citation Download Citation

Setsuhisa Tanabe "Properties of Tm³⁺-doped tellurite glasses for 1.4-μm amplifier", Proc. SPIE 4282, Rare-Earth-Doped Materials and Devices V, (27 April 2001); https://doi.org/10.1117/12.424764

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