Concepedia

Advantages of optical modulators with InGaAlSa/InGaAlAs MQW structure

J. Shimizu, Masahiro Aoki, Taku Tsuchiya, Manabu Shirai, A. Taike, T. Ohtoshi, S. Tsuji

Electronics Letters · 2002 · 28 citations · 5 references

DOI

Concepts

Abstract

An optical modulator based on an InGaAlAs/InGaAlAs multiple quantum well (MQW) structure is demonstrated. The fabricated device had an extinction ratio 6 dB higher than that of a conventional InGaAsP-based device with similar chirp behaviour. The InGaAlAs MQW effectively improved the performance trade-off between the extinction ratio and chirping parameter.

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