C band DWDM Red/Blue Filter WDM device 3 Port Thin Film Filter FWDM
3 Port C band DWDM Red/Blue Filter WDM device
GEZHI DWDM Red/Blue filter is a thin-film filter device. It is a
three-port device. One port is called the "Common." The other two
ports provide the conduit for the two wavelength "bands."
The two bands are the Red (λ>1547 nm) and the Blue (λ<1543
One band goes thru the Reflected leg, and the other band goes thru
the Pass leg.
Typically, however, the device is used as a two-way (i.e.
bidirectional) WDM. One band is sent to the Common leg, while the
other band is delivered from the Common leg. (see example
diagram)In a DWDM module, which uses a Red/Blue filter, a Mux may
be combined with a Demux.
For example, the Mux combines DWDM channels in the Red band, while
the Demux separates DWDM channels in the Blue Band. Using a Red /
Blue fillter, one can combine the Red Transmit channels and the
Blue Receive channels onto a single fiber.
Example of a Red/Blue WDM in bi-directional usage.
Ø Low Insertion Loss Ø WDM Network
Ø Wide Pass Band Ø Line Monitoring
Ø High Channel Isolation Ø Telecommunication
Ø High Reliability Ø Testing Instruments
DWDM Red/Blue Band Filter DWDM Red/Blue Band Filter DWDM Red/Blue
Band Filter with
with Stainless steel tube with Plastic ASB box Package 19" 1RU Rack
|Pass Channel Wavelength||nm||1547~1561 (Red)||1530~1543.2 (Blue)|
|Reflection channel Wavelength||nm||1530~154.2 (Blue)||1547~1561 (Red)|
|Pass Channel insertion loss||dB||≤0.60|
|Reflection Channel insertion loss||dB||≤0.40|
|Adjacent channel isolation||dB||≥30|
|Express channel isolation||dB||≥12|
Note: 1. Customization is available.
2. Insertion loss does not include connector, each connector will
add 0.2dB loss.
3. Other wavelength can be made upon customer’s request. For
example, L-Band R/B, C/L Band.
|Wavelength||Package Spec||Fiber Type||Fiber Diameter||Fiber Length||Connector|
2= 90×20×10 mm
4= 120×80×18 mm