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  Performance Specifications   Parameter Specification Channel Wavelength (nm) 1260 ~ 1620 Center wavelength Accuracy (nm) ±0.5 Channel Spacing (nm) 20 Channel Passband (@-0.5dB bandwidth (nm) >13 Pass Channel Insertion Loss (dB) ≤0.6 Reflection Channel Insertion Loss (dB) ≤0.4 Channel Ripple (dB) <0.3 Isolation (dB) Adjacent >30 Non-adjacent >40 Inertion Loss Temperature Sensitivity (dB/℃) <0.005 Wavelength Temperature Shifting (nm/℃) <0.002 Polarization Dependent Loss (dB) <0.1 Polarization Mode Dispersion <0.1 Directivity (dB) >50 Return Loss（dB） >45 Maximum Power Handling (mW) 300 Opterating Temperature (℃) -25~+75 Storage Temperature (℃) -40~85 Package dimension (mm) Φ5.5x34 (L38 for 900um Loose tube)