Figure 4-11 Oc48 Elr/Stm16 Eh 100 Ghz Faceplate And Block Diagram - Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Reference Manual

4.12 OC48 ELR/STM16 EH 100 GHz Cards
Figure 4-11
OC48ELR
STM16EH
100GHz
1560.61
FAIL
ACT/STBY
SF
TX
1
RX
Nineteen of the cards operate in the blue band with spacing of 100 GHz on the ITU grid (1528.77 nm,
1530.33 nm, 1531.12 nm, 1531.90 nm, 1532.68 nm, 1533.47 nm, 1534.25 nm, 1535.04 nm,
1535.82 nm, 1536.61 nm, 1538.19 nm, 1538.98 nm, 1539.77 nm, 1540.56 nm, 1541.35 nm,
1542.14 nm, 1542.94 nm, 1543.73 nm, and 1544.53 nm). ITU spacing conforms to ITU-T G.692 and
Telcordia GR-2918-CORE, Issue 2.
The other eighteen cards operate in the red band with spacing of 100 GHz on the ITU grid (1546.12 nm,
1546.92 nm, 1547.72 nm, 1548.51 nm,1549.32 nm, 1550.12 nm, 1550.92 nm, 1551.72 nm, 1552.52 nm,
1554.13 nm, 1554.94 nm, 1555.75 nm, 1556.55 nm, 1557.36 nm, 1558.17 nm, 1558.98 nm,
1559.79 nm, and 1560.61 nm). These cards are also designed to interoperate with the Cisco ONS 15216
DWDM solution.
You can install the OC48 ELR/STM16 EH 100 GHz cards in Slots 5, 6, 12, and 13 and provision the card
as a drop or span card in a two-fiber or four-fiber BLSR, path protection, or ADM (linear) configuration.
Each OC48 ELR/STM16 EH 100 GHz card uses extended long-reach optics operating individually
within the ITU-T 100-GHz grid. The OC-48 DWDM cards are intended to be used in applications with
long unregenerated spans of up to 300 km (186 miles) (with mid-span amplification). These transmission
distances are achieved through the use of inexpensive optical amplifiers (flat gain amplifiers) such as
Cisco ONS 15216 erbium-doped fiber amplifiers (EDFAs).
Maximum system reach in filterless applications is 26 dB without the use of optical amplifiers or
regenerators. However, system reach also depends on the condition of the facilities, the number of
splices and connectors, and other performance-affecting factors. When used in combination with
Cisco ONS 15454 Reference Manual, R8.5
4-26
OC48 ELR/STM16 EH 100 GHz Faceplate and Block Diagram
OC-48
Optical
Transceiver
Flash RAM
Mux/
Demux
STS-48
BTC
ASIC
Main SCI
uP bus
Protect SCI
uP
Chapter 4 Optical Cards
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