Role of electrorefraction in quantum-well Fabry–Perot modulators
- 23 March 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (12) , 1418-1420
- https://doi.org/10.1063/1.107308
Abstract
The effects of electrorefraction in quantum-well Fabry–Perot (FP) modulators are discussed theoretically and illustrated experimentally. The large electrorefraction at the zero-field heavy-hole exciton is shown to produce strong modulation in FP devices operated at that wavelength. At longer operating wavelengths, the weakening electrorefraction plays a diminishing role. By taking into account the field dependent absorption α(λ,E) and dispersion n(λ,E) of the quantum-well material, the measured reflectivity spectra are successfully modeled.Keywords
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