A Simple, Linearized, Phase-Modulated Analog Optical Transmission System

Authors

Bryan Haas
T. E. Murphy

Abstract

We describe and experimentally demonstrate a new technique to suppress third-order intermodulation distortion in a coherent phase-modulated RF optical link. The anisotropic electro-optic coefficient of lithium niobate is exploited to simultaneously modulate orthogonally polarized fields. These fields are then combined to eliminate the third-order distortion. This technique uses a single phase modulator, requiring no external bias or control, for a highly linear photonic microwave relay. The resulting dynamic range is limited by fifth-order intermodulation distortion (IMD) instead of third-order IMD.

Download/Views

IEEE Photon. Technol. Lett. 19(10), 729-731, (2007)
linearized-phase-modulator.pdf (PDF format, 295 kB)

Please contact us with comments, suggestions, or feedback
This page was last modified on Thursday July 26, 2007.