Planar array antenna coupled InGaAs/InAlAs multi-quantum well optical modulator for 60â
GHz band millimeter wave signals.
Opt Express
; 32(11): 18700-18716, 2024 May 20.
Article
em En
| MEDLINE
| ID: mdl-38859020
ABSTRACT
A Fe-InP-based planar array antenna-coupled InGaAs/InAlAs multiple quantum well (MQW) optical phase modulator is proposed and demonstrated for radio over fiber (RoF) applications with 60â
GHz-band millimeter-wave wireless signals. The modulator comprises five types of five-layer asymmetric coupled quantum wells (FACQWs) and a two-element array antenna. The FACQWs are designed to have a significant electric-field-induced refractive index change with small electric fields induced in the antenna. In the fabricated modulator, a carrier-to-sideband ratio (CSR) of up to 45.9â
dB was successfully obtained at a power density of 11 W/m2, corresponding to a phase shift of 10.1â
mrad. Furthermore, data transmission of a 2â
GHz modulated wave with a 60â
GHz wireless carrier wave was demonstrated.
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MEDLINE
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En
Ano de publicação:
2024
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Article