Performance Specifications Parameter 4 Channel Module Channel Wavelength (nm) 1271/1291/1311/1331 Center wavelength Accuracy (nm) ±0.5 Channel Spacing (nm) 20 Channel Passband (nm) +/-6.5 Insertion Loss (dB) ≤1.4 Channel Ripple (dB) 0.3 Isolation (dB) Adjacent >30 Non-adjacent >45 Inertion Loss Temperature Sensitivity (dB/℃) <0.005 Wavelength Temperature Shifting (nm/℃) <0.002 Polarization Dependent Loss (dB) <0.2 Polarization Mode Dispersion <0.2 Directivity (dB) >50 Return Loss(dB) >45 Maximum Power Handling (mW) 300 Opterating Temperature (℃) -10~+80 Storage Temperature (℃) -40~+85 Package dimension (mm) L20*W12.4*H6.4