Electroabsorption modulator based on Wannier–Stark localization with 20 GHz/V efficiency
- 7 December 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (23) , 2773-2775
- https://doi.org/10.1063/1.108086
Abstract
We report on a ridge-waveguide modulator based on Wannier–Stark localization in an InGaAs/InAlAs superlattice. Anisotropic absorption is measured and efficient modulation is obtained in the low-field domain and in the high-field domain with TE-polarized light. The device exhibits outstanding HF characteristics: in terms of bandwidth-to-drive-voltage ratio, we find that the Wannier–Stark localization is far more efficient than the quantum Stark effect.Keywords
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