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Numerical analysis of a step-coupled well: A novel quantum-confined Stark shift structure (1992)

Lin, Benjamin S. M. ; Lin, S. J. ; Hwang, J.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 72 (1992), S. 5329-5332

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: A new quantum-confined Stark shift structure, the step-coupled well, is introduced. The feature of the new structure is using a square well of only one quantum state to enhance the Stark shift of the step well. The design rule of 10-μm modulator is suggested. The transfer matrix technique is used for numerical calculation. Numerical results show that the new structure produces a larger Stark shift (13 meV) than the step well (7 meV) under the same bias (20 kV/cm). A lower electric field is thus needed for the step-coupled well to produce the same Stark shift, so that the leakage problem can be minimized and a high switching speed can be achieved.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.351967

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