Stabile Two-wavelength Fiber Laser with Strict Polarization

A novel structure of stable two-wavelength fiber laser with strict polarization has been set up.Fiber Bragg grating,which is written in polarization-maintaining fiber,acts as the filter.The fiber laser is made of twisted fiber and twisted Er-doped fiber.The fiber laser with strict polarization can stably operate at room temperature.The span of wavelength is 0.6 nm,and output power is 8 dBm.