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

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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Veröffentlicht in:IEEE photonics technology letters 2017-09, Vol.29 (17), p.1506-1509
Hauptverfasser: Zhong, Zhu-Qiang, Lin, Gong-Ru, Wu, Zheng-Mao, Yang, Ji-Yun, Chen, Jian-Jun, Yi, Li-Lin, Xia, Guang-Qiong
Format: Artikel
Sprache:eng
Schlagworte:
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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Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2735025