Title :
Noise Reduction in Class-AB Microwave-Photonic Links
Author :
Darcie, Thomas E. ; Moye, Amol ; Driessen, Peter F. ; Bull, Jeffrey D. ; Kato, Hiroshi ; Jaeger, Nicolas A F
Author_Institution :
University of Victoria, Victoria, British Columbia, Canada, V8W 3P6
Abstract :
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.
Keywords :
Microwave-photonic; analog links; class AB; intensity-noise suppression; low-bias; subcarrier; DC generators; Gunshot detection systems; High power microwave generation; Intensity modulation; Noise generators; Noise reduction; Optical modulation; Optical noise; Power generation; Signal generators; Microwave-photonic; analog links; class AB; intensity-noise suppression; low-bias; subcarrier;
Conference_Titel :
Microwave Photonics, 2005. MWP 2005. International Topical Meeting on
Print_ISBN :
89-950043-3-9
DOI :
10.1109/MWP.2005.203605
