Designed for 980 / 1064nm polarization beam combiner / splitter 1 × 2 (2 × 2) 1 × 2 polarization beam combiner / coupler Features 1. Low insertion loss 2. High isolation, high return loss insert 3. high extinction ratio, high stability and high reliability applicable 1. Field of the optical fiber amplifier (EDFA) 2. Fiber optic sensor 3. The communication system according to a Raman amplifier parameters Parameter Unit Value index level PAPA center wavelength nm 1310,1550 1064 , the operating wavelength range of 980 nm +/- 40 +/- 20 typical insertion loss (23 ℃) dB 0.4 0.5 0.6 0.7 maximum insertion loss (23 ℃) dB 0.6 0.7 0.8 0.9 Minimum extinction coefficient dB 22 20 22 10 directivity dB 50 minimum insertion return loss (input / output) dB 50 Maximum optical power mW 300 light model Port1 & 2: PM Panda Fiber; Port3: SMF-28e, Hi1060 or PM Panda Fiber working temperature ℃ -5 ~ + 70 Storage temperature ℃ -45 ~ + 85