Fabrication of Tm2O3/Al2O3-silica preform by improved MCVD-chelate delivery system

Author

Mat-Sharif, K.A. ; Omar, Nasr Y. M. ; Hanif, S. ; Zulkifli, M.I. ; Muhamad-Yassin, S.Z. ; Yusoff, A. ; Zubair, H.T. ; Aljamimi, S.M. ; Yusoff, Z. ; Abdul-Rashid, H.A. ; Tamchek, N.

Author_Institution

Photonic Lab., Telekom R&D, Cyberjaya, Malaysia

fYear

2014

fDate

2-4 Sept. 2014

Firstpage

119

Lastpage

122

Abstract

The fabrication of Tm/Al-doped silica preforms by an improved MCVD method with metal chelate precursors is discussed. Two fabrication techniques are employed, namely; simultaneous soot-dopant deposition (or standard MCVD) and stepwise soot-dopant deposition. The preforms are characterized by refractive index profiler and EPMA. The results show that the stepwise soot-dopant technique has a higher incorporation of Al₂O₃ and Tm₂O₃ as compared to the simultaneous soot-dopant method. This is due to the drawbacks of our chelate delivery system such as the temperature gradient and flow design. For the stepwise technique, the measured index difference of the preform is 0.006 with 0.8 wt% (maximum) Tm incorporated in the core.

Keywords

alumina; chemical vapour deposition; electron probe analysis; optical fibre fabrication; preforms; refractive index; silicon compounds; soot; thulium compounds; EPMA; MCVD-chelate delivery system; Tm₂O₃-Al₂O₃-SiO₂; Tm₂O₃/Al₂O₃-silica preform; fabrication techniques; flow design; refractive index profiler; simultaneous soot-dopant deposition; stepwise soot-dopant deposition; temperature gradient; Doping; Fabrication; Indexes; Metals; Preforms; Refractive index; Silicon compounds; EPMA; MCVD; metal chelate; rare earth doped silica; refractive index;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics (ICP), 2014 IEEE 5th International Conference on

Conference_Location

Kuala Lumpur

Type

conf

DOI

10.1109/ICP.2014.7002329

Filename

7002329