13 October 2006 Multiple quantum well surface normal modulators for free-space optical communication links
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Abstract
Retro-communication by the joint use of light modulators and retro-reflecting devices has been proposed and demonstrated as a promising technique to further extend the use of free-space optical communication (FSO) to mobile communication. We have developed and demonstrated high-speed surface-normal GaAs-based and InP-based multiple quantum well electroabsorption modulators and arrays operating at different near-infrared wavelengths for FSO link applications. In this paper we report on the structure and device design issues, and trade-offs when GaAs-based or InP-based modulators are needed in the FSO links. In particular, the modulator structure properties, the device fabrication techniques and the device static and dynamic performance are investigated and compared.
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Qin Wang, Stéphane Junique, Bertrand Noharet, Susanne Almqvist, Daniel Ågren, Dong Zhang, Jan Y. Andersson, "Multiple quantum well surface normal modulators for free-space optical communication links", Proc. SPIE 6399, Advanced Free-Space Optical Communication Techniques/Applications II and Photonic Components/Architectures for Microwave Systems and Displays, 63990A (13 October 2006); doi: 10.1117/12.688320; https://doi.org/10.1117/12.688320
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KEYWORDS
Modulators

Free space optics

Quantum wells

Reflectivity

Modulation

Excitons

Absorption

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