Half-open cavity type linear polarization and ultra-narrow linewidth multi-wavelength random fiber laser

• Main Authors: DING DONGLIANG, FENG TING, WANG MINGMING, YAO XIAOTIAN
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2017
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention provides a half-open cavity type linear polarization and ultra-narrow linewidth multi-wavelength random fiber laser. The structure of the random fiber laser comprises an overlapped fiber grating, a rare-earth doping gain fiber, a wavelength division multiplexer, a pumping laser source, a fiber on-line polarizer, a polarization-maintaining fiber ring, a polarization-maintaining fiber isolator and an overlapped fiber grating axial stress regulation device, wherein the overlapped fiber grating, the rare-earth doping gain fiber, the wavelength division multiplexer, the fiber on-line polarizer, the polarization-maintaining fiber ring and the polarization-maintaining fiber isolator are sequentially connected, a pumping light end of a dual-fiber end of the wavelength division multiplexer is connected with an output end of the pumping laser source, and an output end of the polarization-maintaining fiber isolator is used as a laser output port. By combining the overlapped fiber grating and polarization-m