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Published on: February 6, 2014
Suppression of even-order photodiode distortions via predistortion linearization with a bias-shifted Mach-Zehnder
Vincent J Urick1, Meredith N Hutchinson, Joseph M Singley
1Optical Sciences Division, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375, USA. vincent.urick@nrl.navy.mil
Abstract:
A new technique to cancel photodiode-induced even-order distortion in microwave photonic links is demonstrated. A single Mach-Zehnder modulator, biased slightly away from the quadrature point, is shown to suppress photodiode second-order intermodulation distortion in excess of 40 dB without affecting the fundamental power. The technique is theoretically described with supporting experimental results.
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