03-29-2010 12:16 AM
Hello
DWDM:support 80 chanels?what this mean?
CWDM:Support 8 channels?what this mean?
how the above being terminated?on both end?I Mean they need transponder on both end?
are they Single Mode in term of fiber?
Thanks
03-29-2010 06:20 AM
When we refer to channels on a xWDM system, whether Coarse or Dense WDM, we are talking about the number of signals (wavelengths) that can be transmitted on a fiber. A WDM system separates a single fiber into multiple lanes of light. I.e., for an 8 channel CWDM system, 8 signal paths are available between site A and Site B, typically using 2 optical fibers (one transmit and one receive). The device that separates the fiber into multiple light paths and provides the user access (via optical connectors) is the optical multiplexer/demultiplexer. A different frequency specific optical signal is required for each of the wavelength paths. A signal is inserted into the Multiplexer at one end and removed from the fiber at the far end using a Demultiplers. These wavelength signals can be generated by transponders or a WDM compliant transceivers (such as SFP/GBIC/XENPACK/ETCs).
WDM systems typically operate over singlemode fiber.
Let me know if this helps and if you have additional questions.
Tom
03-30-2010 05:39 AM
thanks man
can u give me an example when the distance is 7 Km and the SMF is 6 pair,how we deal now in this situation
Thanks
03-30-2010 03:21 PM
Cisco Dense Wavelength-Division Multiplexing Small Form-Factor Pluggable Module
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6576/product_data_sheet0900aecd80582763.html
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03-30-2010 05:49 PM
03-30-2010 11:44 PM
Tom,Thanks
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