The Fiber Bragg Grating (PMFBG/SMFBG) for 980nm pump laser is written by UV light within the PM980 polarization maintaining fiber (PMF) or SM980 single mode fiber (SMF) core. The PMFBG/SMFBG as pigtail is connected to the 980nm pump laser diode, providing external cavity feedback, which make the pum

Yilut's FBG Reflector is based on Fiber Bragg Grating technology with wide bandwidth and low insertion loss to reflect OTDR test signal. When the optical measurement system generates a certain range of wavelength to a Passive Optical Network(PON) which can pass through the FBG, the FBG will reflect