Widely tunable chaotic fiber laser for WDM-PON detection

Abstract

A widely tunable high precision chaotic fiber laser is proposed and experimentally demonstrated. A tunable fiber Bragg grating (TFBG) filter is used as a tuning element to determine the turning range from 1533 nm to 1558 nm with a linewidth of 0.5 nm at any wavelength. The wide tuning range is capable of supporting 32 wavelength-division multiplexing (WDM) channels with 100 GHz channel spacing. All single wavelengths are found to be chaotic with 10 GHz bandwidth. The full width at half maximum (FWHM) of the chaotic correlation curve of the different wavelengths is on a picosecond time scale, thereby offering millimeter spatial resolution in WDM detection.

Keywords

Fiber Laser / Pump Current / Chaotic State / IEEE Photonic Technology Letter / Wide Tuning Range

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This work has been supported by the National Natural Science Foundation of China (No.61107033), the Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi, and the Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences (No.SKLST201103).