Tunable Broadband Chaotic Signal Synthesis From a WRC-FPLD Subject to Filtered Feedback

The synthesis of wavelength-tunable broadband chaotic signals is experimentally demonstrated by using a weak-resonant-cavity Fabry-Perot laser diode (WRC-FPLD) subject to filtered feedback. To perform the broadband tunability from 1544 to 1556 nm, a tunable optical filter is used for providing filte...

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Published inIEEE photonics technology letters Vol. 29; no. 17; pp. 1506 - 1509
Main Authors Zhong, Zhu-Qiang, Lin, Gong-Ru, Wu, Zheng-Mao, Yang, Ji-Yun, Chen, Jian-Jun, Yi, Li-Lin, Xia, Guang-Qiong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Bandwidth
Broadband
Chaos theory
Chaotic communication
chaotic signal
Feedback
filtered feedback
Optical attenuators
Optical feedback
Optical fiber filters
Optical fibers
Synthesis
wavelength tunable
Weak-resonant-cavity Fabry-Perot laser diode (WRC-FPLD)
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Summary:The synthesis of wavelength-tunable broadband chaotic signals is experimentally demonstrated by using a weak-resonant-cavity Fabry-Perot laser diode (WRC-FPLD) subject to filtered feedback. To perform the broadband tunability from 1544 to 1556 nm, a tunable optical filter is used for providing filtered feedback to drive the laser into chaos. With adjusting the central wavelength of the filter, about 20 longitudinal modes of the WRC-FPLD can individually realize the chaotic output within the tunable range of the filter. Moreover, by suitably selecting the feedback power, the chaos signal with a flat power spectrum and broad bandwidth up to ~30.0 GHz can be achieved.
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ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2735025