Cyan Z-Series Engineering and Planning Guide Release 5.0
Page 94 © 2013 Cyan, Inc. – All Rights Reserved. 700-0023-05-00 Rev. 1
2.9 LAC-8 Lambda Aggregator Module
The Cyan Z-Series Lambda Aggregator CWDM (LAC) terminal multiplexer module provides up to eight
CWDM wavelengths for use in the Z-Series multi-layer transport platforms. Each LAC module provides
optical multiplexing and demultiplexing capability in the 1470nm to 1610nm band with 20nm spacing.
Each LAC module is available with standard 8 – 20 dB link budgets that typically support up to 80-km spans
(0.25 dB/km).
The primary application of the LAC module is to increase effective fiber capacity by multiplexing multiple
optical signals over a common fiber for multiplexed CWDM transmissions or regeneration. This is achieved
through the optical add/drop capability for up to eight 2.5G wavelengths at each node on a ring or a linear
network. The LAC-8 module provides transponding and muxponding in conjunction with SFT-8 modules.
LAC modules support multiplexing and demultiplexing of wavelengths associated with Cyan Z-Series
transponders, muxponders, Ethernet switch/transport modules, third-party system or third-party CWDM
systems. Cyan LAC modules also support integrated management through an in-band Optical Supervisory
Channel (OSC).
Figure 45: Cyan Z-Series LAC-8 Module
The graphic below shows the block diagram for the Z-Series LAC-8 module.
Figure 46: LAC-8 Block Diagram
2.9.1 System Requirements
• Cyan Z33
• Cyan Z77
2.9.2 Functional Interfaces
• Input: Up to 8 (2.5G) CWDM channels
• Output: Up to 8 CWDM wavelengths
• Channel spacing: 20nm
• Optical Supervisory Channel (OSC) — 100Base-FX Ethernet at 1510nm
• Physical: Front Access, Duplex LC/UPC connectors
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