Evanescent-field amplification in Nd3+-doped fluoride planar waveguide
- 30 September 1996
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 69 (14) , 2012-2014
- https://doi.org/10.1063/1.116863
Abstract
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.Keywords
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