Evanescent-field amplification in Nd3+-doped fluoride planar waveguide

T. Ohtsuki, S. Honkanen, N. Peyghambarian, M. Takahashi, Y. Kawamoto, J. Ingenhoff, A. Tervonen, K. Kadono

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


Planar channel waveguides of rare-earth doped fluoride glass are demonstrated with single mode excitation and propagation losses below 3 dB/cm. The waveguide core was fabricated by Ag+-Na+ molten salt ion exchange process in a borosilicate glass (BGG31), and a Nd3+-doped ZBLAN glass was used as a cladding. A 0.45 dB signal amplification at 1.064 μm was observed in the fabricated 1 cm long waveguide, and a 0.9 dB amplification is expected at the emission peak (1.049 μm). Modeling results show 2.5 dB/cm potential gain with the improvement in surface flatness of ZBLAN glass.

Original languageEnglish (US)
Pages (from-to)2012-2014
Number of pages3
JournalApplied Physics Letters
Issue number14
StatePublished - Sep 30 1996

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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