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High-speed slow-wave coplanar strip GaAs/AlGaAs electro-optic laser modulator

✍ Scribed by H. R. Khazaei; E. Berolo; F. Ghannouchi

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 152 KB
Volume: 19
Category: Article
ISSN: 0895-2477
DOI: 10.1002/(sici)1098-2760(19981020)19:3<184::aid-mop3>3.0.co;2-h

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✦ Synopsis

A wide-bandwidth Mach᎐Zehnder tra¨eling-wa¨e electrooptic modulator was realized using no¨el low-loss slow-wa¨e coplanar strips on a GaAsrAlGaAs substrate. Microwa¨e characteristics of the de¨ice were measured up to 40 GHz. The microwa¨e loss at 40 GHz is 7 dBrcm, and a phase ¨elocity of 8.15 cmrns was obtained. The de¨ice demonstrates a half-wa¨e ¨oltage of 20.5 V and an extinction ratio of 9.5 dB. A flat large-signal modulation response up to 22 GHz was measured.

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