Cisco CRS-1 - Carrier Routing System Router

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Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-17439-01
Chapter 3 Overview: Cisco CRS-1 Shared Port Adapters
1-Port Clear Channel OC-12 ATM SPA Overview
Figure 3-6 SFP Optics Module
The 1-Port Clear Channel OC-12 ATM SPA provides the following optical fiber options:
• Multimode—622.08-Mbps, OC-12 optical fiber (SONET STS-12c or SDH STM-4)
Use a multimode optical fiber that has a core/cladding diameter of 62.5/125 microns.
• Single-mode—622.08-Mbps, OC-12 optical fiber (SONET STS-12c or SDH STM-4)
Use a single-mode optical fiber that has a modal-field diameter of 8.7 ±0.5 microns. (Nominal
d
iameter is approximately 10/125 microns.)
For single-mode and multimode optical fiber connections, you c
an use either a duplex LC-type cable (see
Figure 3-7) o
r two simplex LC-type cables, one for transmit (TX) and one for receive (RX).
Figure 3-7 Duplex Patch Cable with LC-Type Connectors
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