Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96919
Title: Photonic generation of tunable continuous-wave microwave signals using a temporally-stretched and chirped pulse-train
Authors: Wong, Jia Haur
Lam, Huy Quoc
Aditya, Sheel
Lee, Kenneth Eng Kian
Wong, Vincent
Lim, Peng Huei
Wu, Kan
Ouyang, Chunmei
Shum, Perry Ping
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: Wong, J. H., Lam, H. Q., Aditya, S., Lee, K. E. K., Wong, V., Lim, P. H., et al. (2012). Photonic Generation of Tunable Continuous-Wave Microwave Signals Using a Temporally-Stretched and Chirped Pulse-Train. Journal of Lightwave Technology, 30(9), 1269-1277.
Series/Report no.: Journal of lightwave technology
Abstract: We show analytically and experimentally that direct photodetection of a temporally-stretched and chirped optical pulse-train together with its time-delayed replica can be exploited to realize the generation of tunable continuous-wave microwave signals. The proposed scheme utilizes the chromatic dispersion of the standard single-mode-fiber (SMF) to temporally-stretch and chirp an optical pulse-train in such a way that the pulses overlap with each other. The temporally-stretched pulse-train is then sent to a Mach-Zehnder Interferometer (MZI) where it first splits and then recombines with a time-delayed replica of itself at the output. Proper management of both the dispersion in the system as well as the relative time-delay of the two arms of the MZI enables one to tune the frequency of the generated microwave signal to any integer multiple of the pulse source's repetition frequency which is within the bandwidth of the photodetector. Based on the proposed scheme, using an initial 2 GHz pulse-train, we demonstrate generation of tunable continuous-wave microwave signals from 4 GHz to 14 GHz.
URI: https://hdl.handle.net/10356/96919
http://hdl.handle.net/10220/11597
DOI: http://dx.doi.org/10.1109/JLT.2012.2184263
Rights: © 2012 IEEE.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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