Cisco ONS 15454 DWDM - Page 923

18-17
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 18 Network Reference
18.3.4 Optical Performance for Single-Span Networks
Table 18-18 lists the span loss for a single-span link configuration with AD-1C-x.xx cards, OPT-PRE
amplifiers, and OPT-BST/OPT-BST-E amplifiers. The single-span link with a flexible channel count is
used both for transmitting and receiving. If dispersion compensation is required, a DCU can be used with
an OPT-PRE amplifier. The optical performance for this special configuration is given for Classes A
through G (8-dBm nominal channel power) used without any restrictions on the 32 available channels.
Table 18-19 lists the span loss for a single-span link configuration with one channel and
OPT-BST/OPT-BST-E amplifiers. The optical performance for this special configuration is given for
Classes A through G. Classes A, B, and C use 8-dBm nominal channel power. Classes D, E, F, and G use
12-dBm nominal channel power. There are no restriction on the 32 available channels. That is, a line
card, transponder, or muxponder wavelength can be extracted from the 32 available wavelengths. Also,
the optical service channel is not required.
Table 18-20 lists the span loss for a single-span link configuration with one channel,
OPT-BST/OPT-BST-E amplifiers, OPT-PRE amplifiers, and ONS 15216 FlexLayer filters. ONS 15216
FlexLayer filters are used instead of the AD-1C-xx.x cards to reduce equipment costs and increase the
span length, since the optical service channel is not necessary. The optical performance for this special
configuration is given for Classes A through G. Classes A, B, and C use 8-dBm nominal channel power.
Classes D, E, F, and G use 12-dBm nominal channel power. There are no restriction on the first 16
available wavelengths (from 1530.33 to 1544.53 nm).
Table 18-18 Span Loss for Single-Span Link with AD-1C-xx.x Cards, OPT-PRE Amplifiers, and
O P T- B S T / O P T- B S T- E A m p l i f i e r s
Node Configuration
Number
of Spans
10 Gbps 2.5 Gbps
Class A Class B Class C Class D Class E Class F Class G
With OSCM cards
1
1. OSCM sensitivity limits the performance to 37 dB.
1 37 dB 31 dB 31 dB 37 dB 37 dB 37 dB 37 dB
Hybrid with OSC-CSM
cards
2
2. OSC-CSM sensitivity limits the performance to 35 dB when it replaces the OSCM.
1 35 dB 31 dB 31 dB 35 dB 35 dB 35 dB 35 dB
Table 18-19 Span Loss for Single-Span Link with One Channel and OPT-BST Amplifiers
Number
of Spans
10 Gbps 2.5 Gbps
Class A Class B Class C Class D Class E Class F Class G
120 to
30 dB
17 to
26 dB
17 to
28 dB
Unprotected
from 29 to 41 dB
Protected from
25 to 41 dB
Unprotected
from 28 to 37 dB
Protected from
24 to 40 dB
Unprotected
from 21 to 34 dB
Protected from
18 to 34 dB
From 23
to 36 dB
Table 18-20 Span Loss for Single-Span Link with One Channel, OPT-BST/OPT-BST-E Amplifiers,
OPT-PRE Amplifiers, and ONS 15216 FlexLayer Filters
Number of
Spans
10 Gbps 2.5 Gbps
Class A Class B
1
Class C
1
Class D
1
Class E
1
Class F
1
Class G
1
1x 38 dB 30 dB 30 dB 44 dB 40 dB 38 dB 40 dB