18-10
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 18 Network Reference
18.3.2 Optical Performance for Linear Networks Without OADM Nodes
shows the optical performance for 32-channel networks using E-LEAF fiber. Span loss values
assume the following:
•
OADM nodes have a loss of 16 dB and equal span losses.
•
The DCU is 550 ps with 4 dB loss.
•
All nodes have OPT-PRE and OPT-BST/OPT-BST-E amplifiers installed.
•
The OPT-PRE amplifier switches to control power whenever the span loss is higher than 27 dB.
See
for a list of cards in each class. A dash (—) indicates the spans that are not supported.
18.3.2 Optical Performance for Linear Networks Without OADM Nodes
The following tables list the reference optical performances for linear networks without OADM nodes.
shows the optical performance for 32-channel linear networks using SMF fiber. Span loss
values assume the following:
•
No OADM nodes are installed and span losses are equal.
•
The DCU loss is 9 dB.
•
Only OPT-PRE amplifiers are installed.
See
for a list of cards in each class. A dash (—) indicates the spans that are not supported.
Table 18-6
Span Loss for 32-Channel Ring and Linear Networks with OADM Nodes Using E-LEAF Fiber
Number of
Spans
10 Gbps
2.5 Gbps
Class A
Class B
Class C
Class I
Class D
Class E
Class F
Class G
Class H
Class J
1
35 dB
25 dB
25 dB
37 dB
37 dB
33 dB
30 dB
32 dB
34 dB
30 dB
2
29 dB
21 dB
20 dB
31 dB
32 dB
28 dB
26 dB
27 dB
29 dB
26 dB
3
27 dB
17 dB
15 dB
29 dB
30 dB
26 dB
23 dB
25 dB
27 dB
23 dB
4
24 dB
—
—
26 dB
28 dB
23 dB
20 dB
22 dB
24 dB
20 dB
5
22 dB
—
—
24 dB
27 dB
22 dB
16 dB
20 dB
23 dB
16 dB
6
20 dB
—
—
22 dB
25 dB
19 dB
—
17 dB
21 dB
—
7
17 dB
—
—
20 dB
24 dB
16 dB
—
—
19 dB
—
Table 18-7
Span Loss for 32-Channel Linear Networks without OADM Nodes Using SMF Fiber
Number of
Spans
10 Gbps
2.5 Gbps
Class A
Class B
Class C
Class I
Class D
Class E
Class F
Class G
Class H
Class J
1
35 dB
25 dB
25 dB
37 dB
37 dB
33 dB
30 dB
32 dB
34 dB
30 dB
2
27 dB
20 dB
19 dB
29 dB
30 dB
26 dB
23 dB
25 dB
26 dB
23 dB
3
24 dB
17 dB
17 dB
25 dB
26 dB
23 dB
20 dB
22 dB
23 dB
20 dB
4
22 dB
15 dB
14 dB
23 dB
24 dB
21 dB
19 dB
20 dB
22 dB
19 dB
5
21 dB
—
—
22 dB
22 dB
20 dB
18 dB
19 dB
20 dB
18 dB
6
20 dB
—
—
21 dB
21 dB
19 dB
17 dB
18 dB
19 dB
17 dB
7
19 dB
—
—
20 dB
20 dB
18 dB
16 dB
18 dB
19 dB
16 dB
Summary of Contents for ONS 15454 DWDM
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