Polarization insensitivity of AlGaAs/GaAs interdiffused quantum wells

Wallace C. H. Choy; E. Herbert Li; Bernard L. Weiss

doi:10.1117/12.328732

4 December 1998 Polarization insensitivity of AlGaAs/GaAs interdiffused quantum wells

Wallace C. H. Choy, E. Herbert Li, Bernard L. Weiss

Proceedings Volume 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications; (1998) https://doi.org/10.1117/12.328732
Event: 1998 International Conference on Applications of Photonic Technology, 1998, Ottawa, Canada

Abstract

Modeling is used to show that interdiffusion can generate a polarization independent parabolic-like quantum well. Criteria to achieve the parabolic-like quantum wells by interdiffusion are discussed. The results indicated that interdiffused quantum wells can produce equal eigen-state spacing, polarization insensitive Stark shift and modulation characteristics similar to an ideal parabolic quantum well. The design process to obtain polarization insensitive ON- and OFF-states in the parabolic-like interdiffused quantum wells is discussed. The predicted modulation depth is comparable to those measured using parabolic quantum wells. The diffused quantum wells have the advantage of using an as-grown rectangular quantum well with post-growth annealing to tailor its confinement profile. These features suggest that the interdiffused quantum well structure can be used to product polarization insensitive electro-absorptive modulation.

Citation Download Citation

Wallace C. H. Choy, E. Herbert Li, and Bernard L. Weiss "Polarization insensitivity of AlGaAs/GaAs interdiffused quantum wells", Proc. SPIE 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, (4 December 1998); https://doi.org/10.1117/12.328732

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