InGaP/InP waveguides
- 25 May 1987
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 50 (21) , 1509-1511
- https://doi.org/10.1063/1.97815
Abstract
We have made InGaP/InP waveguides on InP substrates by atmospheric pressure metalorganic vapor phase epitaxy. The introduction of Ga in the cladding layers causes a large relative index change (Δn=0 to >0.18) that can be varied with the Ga concentration (Δn=0.18 with Ga at 5×1019 cm−3), creating strong, low loss (∼1.25 dB/cm) waveguides. In addition some of these structures were doped with Fe, using ferrocene as the Fe doping source. Typical resistivities of 107 Ω cm have been achieved at Fe concentrations of 5×1017 cm−3, allowing electric fields in excess of 10 000 V/cm to be applied to the waveguides. InGaP/InP Fe-doped waveguides should prove extremely useful in fabricating switches, modulators, couplers, and filters for integrated optics devices.Keywords
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