High-speed waveguide optical modulator made from GaSb/AlGaSb multiple quantum wells (MQWs)

7 May 1987

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 23 (10) , 540-542
https://doi.org/10.1049/el:19870389

Abstract

We observe a large electroabsorption effect in a GaSb/AlGaSb MQW, and use it to make a waveguide modulator with a 10.5 dB on/off ratio and a 12dB insertion loss at a wavelength of 1.55μm. Our high-speed device has a 3dB rolloff frequency of 3.7 GHz.

Keywords

3 DB ROLLOFF FREQUENCY
12 DB
3.7 GHZ
MQW
GASB-ALGASB
INSERTION LOSS
WAVEGUIDE OPTICAL MODULATOR
1.55 MICRON
MULTIPLE QUANTUM WELLS
HIGH-SPEED DEVICE
ELECTROABSORPTION EFFECT