Canary CN-1037B 用户手册
37
Coarse Wavelength Division Multiplexing
Optical Insertion Losses
Optical Insertion Loss estimation:
• Example 2 of Origin to Remote (Point-to-Point) (link) Loss
Calculation with one intermediate OADM (client Drop, Add and
Pass-Thru) stage – assumes one λ per Drop (and associated
OADM Insertion Losses).
OADM Insertion Losses).
• Calculates accumulated typical and maximum path Losses from
Origin through one OADM stage to Remote end-point.
Table (C-2)
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/ one
(typically at segment
Drop point
Add point
Pass-Thru
Drop point
Drop point
Add point
Pass-Thru
point
Pass-Thru stage
end-points)
(M
O
& D
O
) (M
R
& D
R
)
(C)
(B)
(E)
(M
O
+ C)
(M
O
+ E + D
R
)
1.2 dB 1.2 dB
1.0 dB
1.0 dB
0.5 dB
2.2 dB
None:
None:
None:
None:
2.9 dB
(Typical Optical Loss)
No OADM
No OADM
No OADM
No OADM
2.4 dB 2.4 dB
1.4 dB
1.4 dB
1.0 dB
3.8 dB
None:
None:
None:
None:
5.8 dB
(Maximum Optical Loss)
No OADM
No OADM
No OADM
No OADM
• Given: Origin Multiplexer/De-Multiplexer (CM-4MD6-A) losses
(M
O
& D
O
) and Remote site Mux/De-Mux(CM-4MD6-A)
losses (M
R
& D
R
) plus one OADM point losses (C, B, E) in the
optical path.