Semi-open-chamber multi-wavelength random fiber laser based on overlapped fiber grating

• Main Authors: DING DONGLIANG, FENG TING, WANG MINGMING, YAO XIAOTIAN
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2017
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention provides a semi-open-chamber multi-wavelength random fiber laser based on an overlapped fiber grating. The semi-open-chamber multi-wavelength random fiber laser comprises the overlapped fiber grating, a laser gain unit, a distributed feedback single-mode fiber, an isolator and an overlapped fiber grating axial strain adjusting device. One end of the overlapped fiber grating is connected with an input port of the laser gain unit, and the other end is idle and is manufactured to an oblique 8-DEG end surface. The output port of the laser gain unit is connected with one end of the distributed feedback single-mode fiber. The other end of the distributed feedback single-mode fiber is connected with the input end of the isolator. The output end of the isolator is used as a laser output port. According to the semi-open-chamber multi-wavelength random fiber laser, the overlapped fiber grating is used on the random fiber laser, and furthermore a rare-earth-doped fiber gain amplifier or a semiconductor lig