DocumentCode :
1313020
Title :
Microwave Photonic Downconverter With High Conversion Efficiency
Author :
Chan, Erwin H W ; Minasian, Robert A.
Author_Institution :
Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW, Australia
Volume :
30
Issue :
23
fYear :
2012
Firstpage :
3580
Lastpage :
3585
Abstract :
A high conversion efficiency microwave photonic frequency downconverter based on an integrated dual-parallel Mach Zehnder modulator (DPMZM) and optical phase shifter configuration, is presented. This structure features the advantages of high conversion efficiency, robust operation, and ability to function over a very wide frequency range. The introduction of a novel phase shifter that is incorporated within the structure enables a high rejection of over 45 dB of the local oscillator (LO) to be achieved. The integrated DPMZM based photonic mixer also has a lower noise figure and a higher spurious free dynamic range compared to the conventional dual-series modulator based photonic mixer. Experimental results demonstrate a significant improvement of 23.7 dB in the conversion efficiency compared to the conventional dual-series modulator based photonic mixer for the same optical power into the photodetector.
Keywords :
microwave frequency convertors; microwave mixers; microwave oscillators; microwave photonics; optical modulation; optical phase shifters; photodetectors; conventional dual-series modulator; dual-parallel Mach Zehnder modulator; high conversion efficiency; local oscillator; microwave photonic frequency downconverter; noise figure; optical phase shifter; photodetector; photonic mixer; Mixers; Optical filters; Optical modulation; Phase modulation; Photonics; Frequency conversion; microwave mixers; microwave photonics; optical signal processing;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2012.2223197
Filename :
6327317
Link To Document :
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