Coarse Wavelength Division Multiplexing
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CR-XMDX-X –  Four-and Eight-channel optical Multiplexer/De-Multiplexers

CR-4MDX-SFA + 
CR-4MDX-SFB  Series–  

Single-Fiber, Bi-Directional Multiplexer/De-Multiplexers
 
Canary’s economical Coarse Wavelength Division Multiplexers (CWDMs) accomplish the process of combining and launching in parallel, multiple user data channels as a single, transmitted multiwavelength data stream. The process uses completely passive, unpowered, optical components. In addition, the CWDMs partition (de-mux) incoming multiplexed optical signals and distribute the individual traffic channels to their respective users. Standard Multiplexer/De-Multiplexer versions launch four and eight user channels (wavelengths) across a single-mode duplex fiber segment. They are used in conjunction with specific Canary Media Converter models that provide active signal transmission using one of the eight defined CWDM wavelengths. They are also compatible with wavelength outputs from other CWDM-capable devices.

Organizations deploying Coarse Wavelength Division Multiplexing technology are able to increase user access, add redundancy, and reduce network congestion with a minimum infrastructure investment. With CWDM connections, multiple network users, subnets, or VPNs can simultaneously access single-mode fiber links that were formerly limited to single Server and Switch backbone type connections. It is important to insure that all interconnected CWDM devices, passive and active, be carefully matched as to wavelengths (channels) being allocated to specific user devices and their signal propagation paths across the fiber network. Keeping track of wavelength assignments is the sine qua non for successful CWDM installations.

Single-Fiber, Bi-Directional Multiplexer/De-Multiplexer versions support four user-channels across a simplex, (single-fiber) singlemode strand. Each of the four user-channels employs two wavelengths – one for outgoing data transmission and one for incoming data reception. In practice, eight wavelengths are paired in use and require two variants of Canary’s Single-Fiber Multiplexer/De-Multiplexers to be linked as complementary pairs. One Single-Fiber variant (SFA) transmits on Group-A wavelengths (λs) and receives on Group-B wavelengths. The other variant (SFB) transmits on Group-B wavelengths and receives on Group-A wavelengths. Together, they form a complementary pair is One SFA version always be connected to one SFB version for the proper functioning of single-fiber, bi-directional links. Standalone SFA units can function with any other CCM-1600 or CCN-2000 chassis-based SFB Multiplexers and visa versa. Single-Fiber Multiplexers are ideal for maintaining or increasing user access when available fiber is limited to a single strand or one strand of a duplex pair is being redeployed for other uses.

Ordering Information                  Local User Ports are SC Type
Model Numbers Description Multiplexer/
De-Multiplexers (with Passive Optics)
ITU-CWDM Wavelengths (λ)
in nano- meters(ηm)
Power
Supply
Network Port
Connector
CR-4MD1-A ** 4-Channel Mux/Demux, Group A λs 
(For Reference)
1470, 1510, 1550, 1590 None SC - s/m
CR-4MD1-B 4-Channel Mux/Demux, Group B λs 
(For Reference)
1490, 1530, 1570, 1610 None SC - s/m
CR-4MD1-C 4-Channel Mux/Demux, Group C λs 
(For Reference)
1290, 1310, 1330, 1350 None SC - s/m
CR-4MD1-D 4-Channel Mux/Demux, Group D λs 
(For Reference)
1390, 1410, 1430, 1450 None SC - s/m
CR-4MD1-M 4-Channel Mux/Demux, Group M λs 
(For Reference)
1310, 1330, 1350, 1370 None SC - s/m
CR-4MD1-SFA * 4-Channel Mux/Demux, Single-Fiber Bi-Directional Tx: 1470, 1510, 1550, 1590
Rx: 1490, 1530, 1570, 1610
None SC - s/m
CR-4MD1-SFB * 4-Channel Mux/Demux, Single-Fiber Bi-Directional Tx: 1490, 1530, 1570, 1610
Rx: 1470, 1510, 1550, 1590
None SC - s/m
CR-8MD1-E 8-Channel Mux/Demux, Group E λs 
(For Reference)
1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 None SC - s/m
CR-8MD1-F 8-Channel Mux/Demux, Group F λs 
(For Reference)
1290, 1310, 1330, 1350, 1390, 1410, 1430, 1450 None SC - s/m
CR-8MD1-M 8-Channel Mux/Demux, Group M λs 
(For Reference)
1310, 1330, 1350, 1370, 1390, 1410, 1430, 1450 None SC - s/m
CR-4MD6-A 4-Channel Mux/Demux, Group A λs (LC clients) 1470, 1510, 1550, 1590 None SC - s/m
CR-4MD6-B 4-Channel Mux/Demux, Group B λs (LC clients) 1490, 1530, 1570, 1610 None SC - s/m
CR-4MD6-C 4-Channel Mux/Demux, Group C λs (LC clients) 1290, 1310, 1330, 1350 None SC - s/m
CR-4MD6-D 4-Channel Mux/Demux, Group D λs (LC clients) 1390, 1410, 1430, 1450 None SC - s/m
CR-4MD6-M 4-Channel Mux/Demux, Group M λs (LC clients) 1310, 1330, 1350, 1370 None SC - s/m
CR-4MD6-SFA * 4-Channel Mux/Demux, Single-Fiber Bi-Directional TX: 1470, 1510, 1550, 1590
RX: 1490, 1530, 1570, 1610
None SC - s/m
CR-4MD6-SFB * 4-Channel Mux/Demux, Single-Fiber Bi-Directional TX: 1490, 1530, 1570, 1610
RX: 1470, 1510, 1550, 1590
None SC - s/m
CR-8MD6-E 8-Channel Mux/Demux, Group E λs (LC clients) 1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 None SC - s/m
CR-8MD6-F 8-Channel Mux/Demux, Group F λs (LC clients) 1290, 1310, 1330, 1350, 1390, 1410, 1430, 1450 None SC - s/m
CR-8MD6-M 8-Channel Mux/Demux, Group M λs (LC clients) 1310, 1330, 1350, 1370, 1390, 1410, 1430, 1450 None SC - s/m
* Single-Fiber Bi-Directional, 4-channel Multiplexer/De-Multiplexers must be connected as complementary SFA & SFB pairs i.e. one SFA unit must be connected with one SFB unit to establish a proper, functioning data link across the single-mode fiber cable.
** All models of Passive Multiplexer / De-Multiplexers & OADMs use SC connectors as standard for single-mode network (loop) connections. Client ports can be either SC or LC style fiber connectors.
There are eighteen CWDM wavelengths (ls) specified. Eight standard wavelengths plus four O-band ls are useable over most standard single-mode fiber. Canary offers products for the standard eight wavelengths plus four O-band ls e.g. 1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 ηm + 1290, 1310, 1330, 1350 ηm
NOTE: CR-XMX-X Standalone Multiplexer / Demultiplexers are available as modules for the CCM-1600 chassis and SNMP / WEB manageable, 20-slot CCN-2000 chassis. Using the same model numbers as above, substitute CM in place of the CR prefix for the CCM-1600 chassis. For the CCN-2000, substitute CN in place of the CR prefix.
Please refer to other Converter and chassis product data pages for additional CWDM information.



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