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Updated: May 12, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Generation of wideband chaos with suppressed time-delay signature by delayed self-interference
Anbang Wang1, Yibiao Yang, Bingjie Wang
1Key Laboratory of Advanced Transducers & Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
Abstract:
We demonstrate experimentally and numerically a method using the incoherent delayed self-interference (DSI) of chaotic light from a semiconductor laser with optical feedback to generate wideband chaotic signal. The results show that, the DSI can eliminate the domination of laser relaxation oscillation existing in the chaotic laser light and therefore flatten and widen the power spectrum. Furthermore, the DSI depresses the time-delay signature induced by external cavity modes and improves the symmetry of probability distribution by more than one magnitude. We also experimentally show that this DSI signal is beneficial to the random number generation.
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