2
COARSE WAVELENGTH DIVISION MULTIPLEXER/DEMULTIPLEXER
(CWDM) FILTER
Functional Diagram
Specifications
Parameter Without Upgrade Port With Upgrade Ports
4 Ch 8 Ch 4 Ch 8 Ch
Operating wavelength range Minimum 1260 – 1620 nm
Passband width Minimum λc±6.5 nm
Insertion loss1
Mux Maximum 2.0 dB 3.5 dB 2.3 dB 3.9 dB
Demux Maximum 2.3 dB 3.8 dB 2.3 dB 4.2 dB
Upgrade Maximum N/A N/A 2.2 dB 1.3 dB
Passband ripple Maximum 0.35 dB 0.4 dB 0.35 dB 0.4 dB
Mux isolation
Adjacent channel Minimum 15 dB
Non-adjacent channel Minimum 15 dB
Demux isolation
Adjacent channel Minimum 30 dB
Non-adjacent channel Minimum 50 dB
Upgrade isolatioin Minimum N/A N/A 15 dB 15 dB
Polarization dependent loss Maximum 0.2 dB
Polarization mode dispersion Maximum 0.2 ps
Return loss Minimum 45 dB
Directivity Minimum 50 dB
Optical power Maximum 500 mW
Operating temperature range -40 – 85°C
Storage temperature range -40 – 85°C
Operating humidity 5 – 85%
1. Including connectors' loss.