CWDM Modules

Barnfind CWDM Mux/Demux is a passive technology, it allows for any protocol to be transported over the link, as long as it is at a specific wavelength (i.e. HD over fiber at 1570nm transported alongside 3Gbps SDI at 1590nm). This allows for long-term future proofing of the networking infrastructure because the multiplexers simply refract light at any network speed, regardless of the protocol being deployed.

Barnfind CWDM Mux/Demux can support up to 18 wavelengths between 1270nm to 1610nm in 20nm increments when com fiber is ITU-T G.694.2 , however if com fiber is ITU-T G.652, we recommend adopt 1270nm and 1290nm instead of 1390nm and 1410nm because of water peak loss.
Barnfind provides a complete portfolio of CWDM Mux Demux and Optical Add Drop Multiplexer (OADM) units to suit all applications.

CWDM Mux/Demux is a flexible, low-cost solution that enables the expansion of existing fiber capacity.
The CWDM Mux/Demux lets operators make full use of available fiber bandwidth in local loop and enterprise architectures.
Barnfind CWDM Mux/Demux is a universal device capable of combining up to 18 optical signals into a fiber pair or single fiber. It is designed to support a broad range of architectures, ranging from scalable point-to-point links to two fiber-protected rings


CWDM Mux & Demux spesifications

8/16 optical channels
Center wavelengths according to ITU-T G.694.2
Channel center wavelength 1290~1590 nm
Channel clear passband ITU +/- 7 nm
Insertion loss 8ch-2.5dBm, 16ch-3.5dBm (max)
Passband ripple 0.5dBm (max)
Adjacent channel isolation 30dBm (min)
Non-adjacent channel isolation 45dBm (min)
Return loss 45dBm (min)
Directivity 45dBm (min)
Polarization dependent loss 0.1dBm (max)
 Operating temperature range -20C to +70C (optional -40C to +85C)
Storage temperature handling – 40 to + 85C
Maximum power handling 300mW

ITU grid G.694.2



Data Rate
BTSFP-CWDM-40-01XX155Mbps40km1290 - 1590nm
BTSFP-CWDM-80-01XX155Mbps80km1470 - 1610nm
BTSFP-CWDM-40-02XX1.25Gbps40km1290 - 1590nm
BTSFP-CWDM-80-02XX1.25Gbps80km1470 - 1610nm
BTSFP-CWDM-40-03XX2.5Gbps40km1290 - 1590nm
BTSFP-CWDM-80-03XX2.5Gbps80km1470 - 1610nm
* All CWDM modules mentioned in the list are transceivers
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