Noise Reduction in Class-AB Microwave-Photonic Links

TitleNoise Reduction in Class-AB Microwave-Photonic Links
Publication TypeConference Paper
Year of Publication2005
AuthorsDarcie, T. E., A. Moye, P. F. Driessen, J. D. Bull, H. Kato, and N. A. F. Jaeger
Conference NameMicrowave Photonics, 2005. MWP 2005. International Topical Meeting on
Pagination329 - 332
Date Publishedoct.
Keywordsanalog links, class AB, intensity-noise suppression, low-bias, Microwave-photonic, subcarrier

A Class-AB microwave-photonic link is presented as a means to reduce noise associated with DC-bias. By operating with two complementary, approximately half-wave-rectified, optical sources and generating the difference in a balanced detector, linear modulation with high modulation efficiency is achieved with near zero DC. Using two mode-converter intensity modulators, we demonstrate a 5 dB reduction in shot noise and elimination of intensity noise, relative to a quadrature-biased Mach-Zehnder, for the same received RF signal power.


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