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Pure two-tone optical signal generation by using precise and high-speed modulation

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1 Author(s)
Tetsuya Kawanishi ; National Institute of Information and Communications Technology, Koganei, Tokyo 184-8795, Japan

We describe a characterization technique for electro-optic (EO) and optical-electric (OE) conversion devices, by using pure two-tone optical signal generation by using precise and high-speed modulation. A Mach-Zehnder modulator (MZM) provides precise and high-speed lightwave control as an EO conversion device, so that it would be good candidate for a reference signal source for conversion efficiency estimation. However, conventional modulators have imperfections, such as imbalance in optical circuits, electrode structures, etc. We have recently developed pure two-tone optical signal generation using high extinction ratio modulators consisting of active trimmers. This technique can be used for calibration of photodetectors, where theoretical radiation power can be defined precisely.

Published in:

2011 13th International Conference on Transparent Optical Networks

Date of Conference:

26-30 June 2011