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Linearized Broadband Analog Microwave Transmission Over Fiber With a Single Optical Phase Modulator AuthorsB. M. Haas Abstract Optical phase modulators (PMs) present advantages over Mach-Zehnder intensity modulators (MZMs) for microwave signal relay applications. However, unlike quadrature-biased MZMs, PMs do not automatically suppress second-order harmonic and sum/difference frequencies, limiting their utility to suboctave signals and unnecessarily constraining any system that would use a phase-modulated relay. Here we describe recent experimental results that show suppression of second-order distortion using a single PM by adapting a previously reported technique. This development enables broadband operation of an optical PM link with a Spur-Free Dynamic Range (SFDR) that equals that of a traditional MZM-based link.
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