Low-loss optical waveguides made with molecular beam epitaxial In0.012Ga0.988As and In0.2Ga0.8As-GaAs superlattices
- 2 June 1986
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 48 (22) , 1507-1509
- https://doi.org/10.1063/1.96902
Abstract
We demonstrate for the first time low‐loss optical guiding in In‐doped GaAs. Ridge waveguides are made with single In0.012Ga0.988As ternary layers and In0.2Ga0.8As‐GaAs superlattices. Attenuation constants of ∼1.3 dB/cm are measured and the principal loss mechanism is identified to be scattering at the ridge walls. It is expected that improved fabrication techniques will lead to guides with attenuation ≤0.5 dB/cm.Keywords
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