Dual-wavelength single-longitudinal-mode erbium-doped fiber laser based on inverse-Gaussian apodized fiber Bragg grating and its application in microwave generation
We propose a simple erbium-doped fiber ring laser. It consists of an inverse-Gaussian apodized fiber Bragg grating filter which has two ultra-narrow transmission bands, and an unpumped erbium-doped fiber as a saturable absorber. Stable dual-wavelength single-longitudinal-mode lasing with a wavelength separation of approximately 0.082nm is achieved. A microwave signal at 10.502GHz is demonstrated by beating the dual wavelengths at a photodetector.
inverse-gaussian apodization fiber bragg grating microwave single-longitudinal-mode operation