Fabry-Perot electroabsorption modulators for high-speed free-space optical communication
2004 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 16, no 6, 1471-1473 p.Article in journal (Refereed) Published
Retroreflective modulators are key components in free-space optical communication systems between mobile platforms and users. Wide-aperture surface-normal electroabsorption modulators based on GaAs-AlGaAs quantum wells embedded in an asymmetric Fabry-Perot cavity ire designed and fabricated with a high yield. process on 10-cm wafers. It is shown that the modulator yield and its speed are improved significantly by a pixellated approach in which monolithic modulators are divided into 4-64 pixels. The fabricated 1.5 x 1.5 cm(2) devices exhibit contrast ratios of 8 dB at a driving voltage of 8 V and a modulation frequency higher than 10 MHz, which provides low noise and fast data transmission for long distance free-space optical communication.
Place, publisher, year, edition, pages
2004. Vol. 16, no 6, 1471-1473 p.
Electroabsorption modulator; Free-space optical communication; GaAs-AlGaAs multiple quantum wells (MQWs); High yield; Large aperture
IdentifiersURN: urn:nbn:se:kth:diva-7626DOI: 10.1109/LPT.2004.827855ISI: 000221578300017OAI: oai:DiVA.org:kth-7626DiVA: diva2:12711
QC 201008022007-11-122007-11-122010-12-06Bibliographically approved