Datasheet

33
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).
• 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.