Low-loss optical channel waveguides in KNbO3 by multiple energy ion implantation
- 1 September 1992
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 72 (5) , 1671-1675
- https://doi.org/10.1063/1.351689
Abstract
Permanent optical channel waveguides in single crystals of KNbO3 are formed with low‐dose MeV He ion irradiation. A single energy implantation forms a confinement barrier at the projected range of the ions whereas multiple energy implantations combined with a positive shielding mask form the side walls. Guiding modes are produced and propagation losses as low as 1.0 dB/cm are measured without the need for any annealing. The irradiation induced refractive index changes that define the boundaries of the waveguiding channels are made visible with cross‐polarized light microscopy.This publication has 17 references indexed in Scilit:
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