1550nm 200kHz FBG Single-Frequency Ultra-Narrow Linewidth Laser

1550nm 200kHz FBG Single-frequency Ultra-Narrow Linewidth Laser is a type of fiber Bragg grating (FBG) as the Frequency selection element to achieve Single longitudinal mode and ultra-narrow linewidth output. It is a high-performance light source with extremely low phase noise and high wavelength stability, which can be applied in optical measurement and detection, optical sensor applications, and high-precision OTDR applications.