%0 Journal Article
%T Frequency Sweep Linearization for Semiconductor Laser Using a Feedback Loop Based on Amplitude-Frequency Response
%A Jianfang Zhu
%A Ligong Chen
%J Optics and Photonics Journal
%P 273-283
%@ 2160-889X
%D 2021
%I Scientific Research Publishing
%R 10.4236/opj.2021.118017
%X <div style=\"text-align:justify;\">
	A scheme of frequency sweep linearization of semiconductor lasers using a feed-back loop based on amplitude-frequency response is demonstrated in this paper. The beat frequency signal is obtained by self-heterodyne detection. The frequency changes are converted to the envelope of beat frequency signal after amplitude-frequency response. The active frequency sweep linearization is realized by feeding envelope deviations back to the drive currents of the lasers by a feedback loop. A simulation model is built to verify this scheme by Simulink. This scheme does not need high-performance, expensive lasers, complex linearization or tedious post-processing processes, which are of great significance for related applications.
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%K Frequency Sweep Linearization
%K Frequency-Modulated-Continuous-Wave
%K Feedback
%K Semiconductor Laser
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=111024