39. WDM1r specifications 0.5 ps Max Polarization Mode dispersion 0.3 dB Max Polarization dependent loss 50 dB Min Optical return loss 50 dB Min Directivity 30 dB Min Isolation @ 1290-1330 &1480-1500 < 1 dB Max Insertion loss @ 1524 to 1625 nm < 1 dB Max Insertion loss @ 1270 +/- 10 nm 1260 to 1280 & 1524 to 1625 nm Wavelength range r Reflect Channel 30 dB Min Isolation @ 1260 -1280 & 1524 -1625 < 0.8 dB Max Insertion Loss @ 1490 +/- 10 nm < 0.8 dB Max Insertion loss @ 1310 +/- 20 nm 1290 to 1330 &1480 to 1500 nm Wavelength range p Pass Channel G-PON&XG-PON1 Performance specification