Stable Triple-Wavelength Random Fiber Laser Based on Fiber Bragg Gratings

We demonstrate a generation of three lasing wavelengths with the assistance Rayleigh backscattering as stabilizer peak power variations. The proposed laser consists combination semiconductor optical amplifier (SOA) and erbium-doped fiber (EDFA) amplifying media. Three Bragg gratings are employed selective wavelength selectors at 1544, 15747 1550 nm. At 110 mA SOA current 18 dBm EDFA output power, flattened spectrum 0.9 dB variation is attained. In terms stability, maximum fluctuation for individual 0.24 within 120 min observation period. Without effect, flatness severely degraded. This shows that weakly distributed photons can be utilized stabilizers in systems.