A scheme for broadband multi-channel chaotic signals generation

Zheng-Shan Yin; Fei Wang; Zheng-Mao Wu; Guang-Qiong Xia

doi:10.1117/12.2687029

27 November 2023 A scheme for broadband multi-channel chaotic signals generation

Zheng-Shan Yin, Fei Wang, Zheng-Mao Wu, Guang-Qiong Xia

Proceedings Volume 12761, Semiconductor Lasers and Applications XIII; 127610S (2023) https://doi.org/10.1117/12.2687029
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

We propose and experimentally demonstrate a wideband multi-channel chaotic source using a Weak Resonator Cavity Fabry-Perot Laser Diode (WRC-FPLD) with Self-Phase Modulated Optical Feedback (SPMOF), in which, phase modulation is introduced into the external optical feedback loop to improve the bandwidth of the generated multi-channel chaotic signals. The experimental results show that under appropriate optical feedback intensity, WRC-FPLD with SPMOF can generate wideband multi-channel chaotic signals, when the feedback intensity is in the range of -45 dB to -15 dB, the lasing modes in the range of 1530 nm to 1570 nm can be simultaneously driven into chaos state. In addition, the Time Delay Signature (TDS) characteristics of the generated multi-channel chaotic signals are also investigated. To highlight the advantages of the proposed scheme, we also conducted comparative experiments on the conventional optical feedback scheme without phase modulation. Using SPMOF scheme, the obtained bandwidth of multi-channel chaotic signals is improved obviously, the standard bandwidth reaches 11.5 GHz, the TDS of chaotic signal is suppressed to an indistinguishable level. Relative to traditional Fabry-Perot laser diode, WRC-FPLD used in the experiment has a smaller front reflectance, about 1/90 of the rear reflectance, and a longer cavity, so it can excite more lasing modes. The proposed scheme can generate wideband multi-channel chaotic signals with a small mode spacing, which is an ideal light source for the chaotic optical communication system using wavelength division multiplexing technology.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zheng-Shan Yin, Fei Wang, Zheng-Mao Wu, and Guang-Qiong Xia "A scheme for broadband multi-channel chaotic signals generation", Proc. SPIE 12761, Semiconductor Lasers and Applications XIII, 127610S (27 November 2023); https://doi.org/10.1117/12.2687029

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available