Haxha, S. and Rahman, B.M.A. and Obayya, S.S.A. and Grattan, K.T.V. (2003) Velocity Matching of a GaAs Electrooptic Modulator. Applied Optics, 42 (36). pp. 7179-7187. ISSN 0003-6935.
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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.
|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:||14 Jan 2010 14:28|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/7639 (The current URI for this page, for reference purposes)|
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