Optically active erbium-doped waveguides fabricated using a single-sol-gel-deposition technique

Robert R. Thomson, Henry T. Bookey, H. Ur-Rehman, S. Liu, N. Suyal, Ajoy K. Kar

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We present the results of optical-characterization experiments conducted on optically active erbium-doped waveguides. Using selected characterization results presented in this paper and a simple analysis, the device operation is evaluated. Each of the core and the cladding layers were individually fabricated using a single sol-gel deposition. These are, to the best of our knowledge, the first optically active waveguides to be fabricated in such a way. Characterization results include gain, fluorescence-lifetime, waveguide-loss, polarization-dependent-loss (PDL), and erbium-absorption measurements. Relative gains of over 1 dB · cm-1 were measured. Fluorescence lifetimes of the 4I13/2 ? 4I15/2 transition as high as 5.6 ms were observed. Waveguide losses as low as 0.13 dB · cm-1 were measured. © 2005 IEEE.

Original languageEnglish
Pages (from-to)4249-4256
Number of pages8
JournalJournal of Lightwave Technology
Issue number12
Publication statusPublished - Dec 2005


  • Dielectric waveguides
  • Erbium
  • Optical amplifiers
  • Optical materials


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