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Wu, Y., Chen, D. and Sun Y. (2013) Research on Optical Chirp Linearization Technique of Semiconductor Lasers by an Optoelectronic Feedback Loop. Chinese Journal of Lasers, 40, 1-6. https://doi.org/10.3788/CJL201340.0902001

has been cited by the following article:

• TITLE: Frequency Sweep Linearization for Semiconductor Laser Using a Feedback Loop Based on Amplitude-Frequency Response

  AUTHORS: Jianfang Zhu, Ligong Chen

  KEYWORDS: Frequency Sweep Linearization, Frequency-Modulated-Continuous-Wave, Feedback, Semiconductor Laser

  JOURNAL NAME: Optics and Photonics Journal, Vol.11 No.8, August 3, 2021

  ABSTRACT: 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.