All optical integrated upconversion fluorescence-based point temperature sensing system using Er3+-doped silica-on-silicon waveguides

In this work an optically integrated and compact point temperature sensor based upon upconversion fluorescence emission in an Er3+-doped silica-on-silicon waveguide is proposed. The sensing system relies upon the temperature information residing in the intensity ratio of two thermally coupled upconv...

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Veröffentlicht in:Review of scientific instruments 2002-02, Vol.73 (2), p.476-479
Hauptverfasser: Messias, D. N., Vermelho, M. V. D., Gouveia-Neto, A. S., Aitchison, J. S.
Format: Artikel
Sprache:eng
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Zusammenfassung:In this work an optically integrated and compact point temperature sensor based upon upconversion fluorescence emission in an Er3+-doped silica-on-silicon waveguide is proposed. The sensing system relies upon the temperature information residing in the intensity ratio of two thermally coupled upconversion excited fluorescence emission signals around 530 and 550 nm due to the Er3+ transitions H11/22→4I15/2 and S3/24→4I15/2, respectively. The system was tested in the range of temperature from 20 °C to 140 °C. Under this circumstance the system have shown sensitivity close to 9.0×10−3/°C with a coupled pump power around 800 nm as low as 7 mW and a maximum sensitivity of 0.010/°C is expected at 250 °C.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1428636