Velocity Matching of a GaAs Electrooptic Modulator

Haxha, Shyqyri and Rahman, B. M. Azizur and Obayya, Salah S.A. and Grattan, Kenneth T. V. (2003) Velocity Matching of a GaAs Electrooptic Modulator. Applied Optics, 42 (36). pp. 7179-7187. ISSN 0003-6935. (The full text of this publication is not available from this repository)

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Abstract

New designs for the velocity matching of a deep-etched semiconductor electro-optic modulator are presented. A tantalum pentoxide (Ta2O5) coating is considered here for achieving velocity matching between the microwave and the optical signals. The effects of the velocity mismatch, the conductor loss, the dielectric loss, and the impedance mismatch are studied in relation to the optical bandwidth of a high-speed semiconductor modulator. It is shown that both the dielectric loss and the impedance matching play key roles for velocity-matched high-speed modulators with low conductor loss. The effects of Ta2O5 thickness on the overall bandwidth and on the half-wave voltage-length product VpiL are also reported.

Item Type: Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunications
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Yiqing Liang
Date Deposited: 23 Oct 2008 14:43
Last Modified: 16 Jul 2014 08:30
Resource URI: http://kar.kent.ac.uk/id/eprint/7639 (The current URI for this page, for reference purposes)
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