We have developed an efficient framework for analyzing the reflection and transmission properties of semiconductor photonic crystal optical amplifiers. Specifically, we have investigated the use of slow-light to enhance the gain of short integrated amplifiers. We find that the expected enhancement in transmission is limited by distributed feedback induced by the material gain itself. Such back-scattering is further enhanced by the refractive index variation associated with the linewidth enhancement factor. The inclusion of this effect reveals that for a given material gain, devices with smaller linewidth enhancement factor may offer better performance.

Theory of slow-light semiconductor optical amplifiers / Saldutti, Marco; Rasmussen, Thorsten; Gioannini, Mariangela; Mork, Jesper. - In: OPTICS LETTERS. - ISSN 0146-9592. - 45:21(2020), pp. 6022-6025. [10.1364/OL.403446]

Theory of slow-light semiconductor optical amplifiers

Saldutti, Marco;Gioannini, Mariangela;
2020

Abstract

We have developed an efficient framework for analyzing the reflection and transmission properties of semiconductor photonic crystal optical amplifiers. Specifically, we have investigated the use of slow-light to enhance the gain of short integrated amplifiers. We find that the expected enhancement in transmission is limited by distributed feedback induced by the material gain itself. Such back-scattering is further enhanced by the refractive index variation associated with the linewidth enhancement factor. The inclusion of this effect reveals that for a given material gain, devices with smaller linewidth enhancement factor may offer better performance.
2020
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2846444