Cisco ONS 15454 DWDM - Optical Performance for ROADM Rings and Linear Networks; Table 18-10 Span Loss for 16-Channel Linear Networks Without OADM Nodes Using SMF Fiber; Table 18-11 Span Loss for Eight-Channel Linear Networks Without OADM Nodes Using SMF Fiber

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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 18 Network Reference
18.3.3 Optical Performance for ROADM Rings and Linear Networks
• Only OPT-PRE amplifiers are installed.
• The minimum channel power is 4 dBm.
• Wavelengths are picked up without any restriction from Bands 4 and 5 (1542.14 to 1545.51 nm).
See Table 18-2 for a list of cards in each class.
Table 18-11 shows the optical performance for 8-channel linear networks with 8 dBm per channel 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 Table 18-2 for a list of cards in each class. A dash (—) indicates the spans that are not supported.
18.3.3 Optical Performance for ROADM Rings and Linear Networks
The following tables list the reference optical performances for ROADM rings and linear networks.
Table 18-12 shows the optical performance for 32-channel linear or ring networks using SMF fiber with
only ROADM nodes installed. Span loss values assume the following:
• All nodes in the ring or linear network are ROADM with equal span losses.
• The DCU loss is 9 dB.
Table 18-10 Span Loss for 16-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 37 dB 29 dB 28 dB 37 dB 37 dB 36 dB 33 dB 35 dB 37 dB 33 dB
2 32 dB 23 dB 23 dB 33 dB 34 dB 30 dB 27 dB 29 dB 31 dB 27 dB
3 28 dB 21 dB 20 dB 30 dB 30 dB 26 dB 24 dB 26 dB 27 dB 24 dB
4 26 dB 19 dB 18 dB 27 dB 28 dB 24 dB 22 dB 23 dB 25 dB 22 dB
5 24 dB 18 dB 17 dB 26 dB 26 dB 23 dB 21 dB 22 dB 24 dB 21 dB
6 23 dB 17 dB 17 dB 24 dB 25 dB 22 dB 20 dB 21 dB 22 dB 20 dB
7 22 dB 16 dB 15 dB 23 dB 24 dB 21 dB 19 dB 20 dB 21 dB 19 dB
Table 18-11 Span Loss for Eight-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 37 dB 31 dB 30 dB 37 dB 37 dB 37 dB 35 dB 37 dB 37 dB 35 dB
2 34 dB 26 dB 25 dB 34 dB 34 dB 32 dB 30 dB 31 dB 33 dB 30 dB
3 31 dB 23 dB 22 dB 33 dB 34 dB 29 dB 26 dB 28 dB 30 dB 26 dB
4 29 dB — — 30 dB 31 dB 27 dB 24 dB 26 dB 28 dB 24 dB
5 27 dB — — 29 dB 30 dB 26 dB 23 dB 25 dB 26 dB 23 dB
6 ———27 dB——————