Datasheet

32
Coarse Wavelength Division Multiplexing
Optical Insertion Losses
The following Sections present examples of Optical Insertion Loss estimation with calculations, in tabular form. A simple diagram is included for
each example.
Each diagram displays the logical device-paths used for Optical Insertion Loss calculations through each stage of Canary Multiplexer / De-
Multiplexers (four & eight-channels) and OADMs that service one, two and four Client-channel Drops & Adds (signal reinsertions).
Optical Insertion Loss estimation:
• Example 1 of Origin to Remote-Point (link) Loss Calculation
with no intermediate OADM (client Drop, Add or Pass-Thru) stages
(or their associated OADM Optical Insertion Losses).
• Calculates accumulated typical and maximum path Losses from
Origin to Remote end-point.
• Given: Origin and Remote site Multiplexer/De-Multiplexer losses
(Mux/De-Mux) and no OADMs in the optical path.
•
Origin Chassis Multiplexer/De-Multiplexer (CM-4MD6-A)
stage denoted by M
O
& D
O
and Remote Mux & De-Mux
(CM-4MD6-A) stage denoted by M
R
& D
R
Table (C-1)
Insertion Loss: Each Insertion Insertion Insertion Acc. Loss Insertion Insertion Insertion Acc. Loss at Total Loss at end-
Mux + De-Mux stage Loss (1st) Loss (1st) Loss (1st) at (1st) Loss (2nd) Loss (2nd) Loss (2nd) (2nd) Drop point Demux w/ no
(typically at segment Drop point Add point Pass-Thru Drop point Drop point Add point Pass-Thru point Pass-Thru stages
end-points)
(M
O
& D
O
) (M
R
& D
R
) (M
O
+ D
R
)
1.2 dB 1.2 dB None: None: None: None: None: None: None: None:
(Typical Optical Loss) No OADM No OADM No OADM No OADM No OADM No OADM No OADM No OADM 2.4 dB
2.4 dB 2.4 dB None: None: None: None: None: None: None: None:
(Maximum Optical Loss) No OADM No OADM No OADM No OADM No OADM No OADM No OADM No OADM 4.8 dB