Dual-Wavelength Tunable Fiber Laser with Two Polymer Bragg Gratings for Continuous Wave Terahertz Optical Beat Source Generation

摘要

We report a continuously tunable dual-wavelength laser based on the polymer Bragg gratings for continuous wave terahertz optical beat source generation. The polymer Bragg gratings are used to wavelength selective components in the laser cavity. The measured wavelength tuning range is about 19 nm. The side mode suppression ratio is achieved more than 30 dB for dual wavelength.