Product description
The core of CWDM application is the passive MUX/DEMUX unit. This equipment is able to bundle and respectively unbundle up to 9 different optical wavelengths over a single fiber optic circuit.
CWDM technology is basically using a gap of 20nm between each lambda. However, there are only 8 lambdas (wavelengths) that are supported by our CWDM system. These wavelengths are:
1470nm,
1490nm,
1510nm,
1530nm,
1550nm,
1570nm,
1590nm and
1610nm and they are also called
colored lambdas. To assure communications over these wavelengths special
CWDM SFP modules must be used. The ninth lambda is the 1310nm wavelength, most common and is broadcasted through the normal
SFP optical modules.
The CWDM mux/demux unit comes in 2 different versions. The cheaper one is the 4+1:1(fourand1310nm-to-one) version in which only 4 colored lambdas and traditional 1310nm are mixed. The special CWDM colored lambdas are: 1530nm, 1550nm, 1570nm and 1590nm. You can have 5 different connections over same fiber optic cable.
The complete CWDM mux/demux is the one using all 8 colored CWDM wavelengths doing an 8+1:1 (eightand 1310nm-to-one) multiplexing.
Important Tip: Direct connectivity for the 1310nm lambda (no need for expensive specific CWDM SFP's, this channel is using existing fiber optic equipment). Most of the time applications include CWDM 4+1:1 or 8+1:1, as the 1310nm option is already in use and installing the CWDM mux/demux just brings more capacity and links without impending the existing network.
Additional information on CWDM mux/demux:
PDF Datasheet;
PDF User Manual
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