Preparation and characterization of Er-doped SiO2-TiO2-Al2O3 planar waveguides by sol-gel process for integrated optical amplifiers

Q. Xiang*, Y. Zhou, Y. L. Lam, Y. C. Chan, C. H. Kam

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Silica based planar waveguides co-doped with Er3+, TiO2 and Al2O3 have been fabricated on SOS (silica on silicon) by a sol-gel process using multiple spin-coating and rapid thermal processing (RTP). Their characteristics, such as refractive index, thickness photoluminescence (PL), FTIR (Furior Transform infrared spectrum), XRD (X-ray diffraction), and surface roughness are investigated. The relatively strong PL emitted from planar waveguide has been got using the recipe of 93SiO2: 7TiO2: 10Al2O3: 0.5 Er2O3 (mole ratio). The presence of O2 during annealing in RTP is indispensable for sol-gel waveguide to guide light. Both the average refractive index and thickness of multilayer film increase as the layer number increases.

Original languageEnglish
Pages (from-to)116-121
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3622
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1999 Rare-Earth-Doped Materials and Devices III - San Jose, CA, USA
Duration: Jan 27 1999Jan 28 1999

ASJC Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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