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Modulation efficiency of LiNbO3 waveguide electro-optic intensity modulator operating at high microwave frequency

By Y. Liao, H. Zhou and Z. Meng

Abstract

The modulation efficiency, at high-frequency microwave modulation, of a LiNbO3 waveguide electro-optic modulator is shown to be degraded severely, especially when it is used as a frequency translator in a Brillouin-distributed fiber-sensing system. We derive an analytical expression for this attenuation regarding the phase-velocity mismatch and the impedance mismatch during the modulation process. Theoretical results are confirmed by experimental results based on a 15 Gb/s LiNbO3 optical intensity modulator

Topics: QC, TK
Year: 2009
OAI identifier: oai:eprints.soton.ac.uk:163633
Provided by: e-Prints Soton

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