Home Dense WDM Monitor Module Tap


DWDM Monitor Module with SC Connectors
(32-channel module with SC connectors)

DWDM Monitor Module with LC Connectors
(40-channel module with LC connectors)


    To describe Fiberdyne's new rack-mount module, which separates and outputs a sample of each DWDM (Dense Wavelength Division Multiplexing) signal, on a link. The sample is a small percentage of the original signal. The output is filtered, providing only the selected DWDM channel. The result is a monitoring capability, which does not interfere with the link.
Conceptual Usage:
    The Monitor Module is added to an existing multiplexed link. A set percentage, of each signal, is "leaked" to the outputs. Then, connect measurement or monitoring equipment, such as power meters or network analyzers, to the module outputs. When monitoring is complete, disconnect the instruments. The network is left undisturbed.

    DWDM Block Diagram
    Output low-power samples of each multiplexed signal on the link.
    (Uninstrusive monitoring of each and every signal.)

    Note: Fiberdyne Monitor Modules can be used with all ITU-compliant, mux/demux modules, including Fiberdynes mux/demux modules.

  • Channel numbers and wavelength spacing comply with ITU-T G.694.1
  • Integrated fiber optic splitter and DWDM demultiplexer
  • Ports clearly labeled with Channel number and with wavelength
  • 1U module with reversible brackets, for 19-inch and 23-inch rack frames
Standard Configurations:
  • Two standard configurations: (100-GHz/0.8-nm spacing)
    • 32-channel module (ITU channels 21-52) with SC connectors
    • 40-channel module (ITU channels 20-59) with LC connectors
  • Standard DWDM channels, according to the ITU Grid (ITU-T G.694.1)
  • Rack-mount module, 1U high, 19/23-inch rack frames (reversible brackets)
  • Alternate channel configurations are possible

  • Note: Insertion losses may very slightly among channels.
  • Standard fiber-optic connectors: FC, LC, SC, ST (UPC or APC)
  • Pigtail modules also available
  • Tap percentage: 10%, 5%, and 1%


Part Number Build Matrix:
1234 5-67 8-910 -111213
FDMO N-    -   -   
FDMON = Fiberdyne Labs "Dense - WDM Monitor-Module"

Digit #DescriptionOptions
6thChannel Spacing1 = 100 GHz
2 = 200 GHz
7th & 8thNumber of channels32 = 32-channel,
Ch #'s 21 - 52 (standard)
40 = 40-channel,
Ch #'s 20 - 59 (standard)
(Note: for other configurations, list DWDM Channels in "Special Instructions.")
9th & 10thTap Percentage01 = 1%  (99/01 split)
05 = 5%  (95/05 split)
10 = 10% (90/10 split)
11thPackage1 = Rack-mount, 1U, 19/23-inch
12thConnection Type1 = Adapter, Bulkhead
2 = Pigtail, heavy-duty
(e.g. 3-mm or 2-mm)
13thConnector Style1 = FC
2 = FC/APC
3 = SC
4 = SC/APC
5 = ST
6 = LC
X = other; must list in "Special Instructions"
Note: add "Special Instructions," to list custom configurations.
For example: if the 7th and 8th digits are "04", then list the following.
"Special Instructions: 4-channels, Ch #'s 21-24"

Please call your Sales Representative for pricing.


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Fiberdyne Labs, Inc.,
127 Business Park Drive,
Frankfort, New York 13340

Phone: 1-800-894-9694   |  Phone: (315)895-8470   |  Fax: (315) 895-8436


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