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no Parameter value Unit 1 Product Number BSC-2S0-B25-1561 2 Spec. Type BP / B25 3 Operating Wavelength Range 1420~1640 nm 4 Center Wavelength 1561 nm 5 Pass Channels 1551,1571 nm 6 Pass Band 1544~1578 nm 7 Reflection Band 1420~1538 + 1584~1640 nm 8 Transmission Isolation within Reflection Band >25 dB 9 Max. Insertion Loss within Pass Band <0.3 dB 10 Transmission IL Variation within Pass Band <0.25 dB 11 Reflection Isolation within Pass Band >13 dB 12 Transmission PDL within Pass Band <0.1 dB 13 CW Temp. Sensitivity <2 pm/ 14 AR Coating on backside <0.2 % 15 Angle of incidence (A.O.I.) 1.8 14 Dimension(L*W) 1.4(±0.1) * 1.4(±0.1) mm 15 Thickness 1(+0.4/-0.1) mm