Title | Push-pull polarization conversion using novel asymmetric coupled quantum-well structures |
Publication Type | Journal Article |
Year of Publication | 2006 |
Authors | Ristic, S., and N. A. F. Jaeger |
Journal | Photonics Technology Letters, IEEE |
Volume | 18 |
Pagination | 316 -318 |
Date Published | jan. |
ISSN | 1041-1135 |
Keywords | aluminium compounds, asymmetric coupled quantum-well structures, effective refractive index, effective-mass envelope-function approximation, electro-optical effects, electro-optical modulation, electrorefraction effect, gallium arsenide, gallium compounds, III-V semiconductors, indium compounds, InGaAlAs-InAlAs, optical design techniques, polarization conversion modulator, quantum well devices, refractive index, TE mode, TM mode |
Abstract | A novel type of polarization conversion modulator, employing multiple repetitions of two novel InGaAlAs-InAlAs asymmetric coupled quantum-well structures, is proposed. The novelty of the proposed design is that, via the electrorefraction effect, it allows for a change in the TM mode's effective refractive index, which is opposite in sign to the change in the TE mode's effective refractive index. Numerical simulations based on the effective-mass envelope-function approximation show that the modulator provides not only an electrorefractive response similar to other quantum-well modulators but can also provide a low-chirp push-pull polarization modulation. |
URL | http://dx.doi.org/10.1109/LPT.2005.861993 |
DOI | 10.1109/LPT.2005.861993 |