Design issues for high-speed electro-optic modulators

B. M. Azizur Rahman; Shyqyri Haxha; S. S. A. Obayya; Kenneth T. V. Grattan

doi:10.1117/12.512514

14 August 2003 Design issues for high-speed electro-optic modulators

B. M. Azizur Rahman, Shyqyri Haxha, S. S. A. Obayya, Kenneth T. V. Grattan

Proceedings Volume 5246, Active and Passive Optical Components for WDM Communications III; (2003) https://doi.org/10.1117/12.512514
Event: ITCom 2003, 2003, Orlando, Florida, United States

Abstract

The effect of velocity matching, impedance matching, conductor loss and dielectric loss on the optical bandwidth is reported for Lithium Niobate and GaAs electro-optic modulators by using rigorous numerical techniques. It is shown that by etching Lithium Niobate the switching voltage and bandwidth can be improved and similarly by using a higher aluminium content in the buffer layer the device length for a given optical loss can be shortened. It is also observed that the dielectric loss and impedance matching play a key role in velocity matched high-speed modulators with low conductor loss. Finally it is indicated that by using tantalium pentoxide coating, velocity matching can be achieved for GaAs modulators.

Citation Download Citation

B. M. Azizur Rahman, Shyqyri Haxha, S. S. A. Obayya, and Kenneth T. V. Grattan "Design issues for high-speed electro-optic modulators", Proc. SPIE 5246, Active and Passive Optical Components for WDM Communications III, (14 August 2003); https://doi.org/10.1117/12.512514

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