Linear cavity Brillouin fiber laser exploit reflectivity bandwidth from FBG

In this report, we propose a simple technique of the single wavelength linear-cavity Brillouin fiber laser by using minimal components. The Brillouin gain medium is provided by 11-km long of Single Mode Fiber. The enhancement of experiment is done by using Fiber Bragg Grating and without Fiber Bragg Grating. Reflectivity bandwidth from Fiber Bragg Grating is exploited to improve the performance of laser system. With the involvement of cavity feedback and wavelength selectivity, Fiber Bragg Grating directly influenced the signal power. The maximum output Brillouin power was found to be 17.25 dBm at 1550 nm by utilizing Fiber Bragg Grating while 16.33 dBm were reported without utilizing Fiber Bragg Grating. The optical-signal-to-noise-ratio of 68.097 dB has been obtained from the laser system. A stable high optical-signal-to-noise-ratio and narrow linewidth linear cavity single-wavelength Brillouin fiber laser is done by free running of self-lasing cavity mode within the C-band wavelength region.