Cisco Cisco CRS-X Multishelf System Hoja De Datos
© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.
Page 1 of 8
Data Sheet
Cisco CRS 1-Port 100 Gigabit Ethernet Coherent
DWDM Interface Module
DWDM Interface Module
This data sheet provides detailed product specifications for the Cisco
®
IP over Dense Wavelength-Division
Multiplexing (IPoDWDM) solution, the Cisco CRS 1-Port 100 Gigabit Ethernet Coherent DWDM Interface Module
(Figure 1). The module connects directly into any DWDM network and provides up to 100 Gbps of data throughput,
transporting 100 Gigabit Ethernet LAN Physical Layer (LAN-PHY) and Optical Transport Network (OTN) Transport
Unit Level 4 (OTU-4) over a 50-GHz spaced, 50-GHz stabilized, ITU-compliant wavelength. The module is
completely tunable across the C band in the ITU 50-GHz grid. The unit uses a Coherent Polarization-Multiplexed
Differential Quadrature Phase Shift Key (CP-DQPSK) modulation scheme that is based on the Optical
Internetworking Forum (OIF) standard.
Figure 1. Cisco CRS 1-Port 100 Gigabit Ethernet Coherent DWDM Interface Module
Challenge and Solution
The bandwidth carried on core and metropolitan (metro) DWDM networks is growing exponentially, while
operators’ revenues are not growing as quickly. The Cisco CRS 1-Port 100 Gigabit IPoDWDM solution can
operators’ revenues are not growing as quickly. The Cisco CRS 1-Port 100 Gigabit IPoDWDM solution can
dramatically lower the cost to carry bandwidth, helping
to maintain and improve customers’ profitability in the face
of exponential Internet growth due to demand for next-generation services such as Quad play (data, voice, video,
and mobility), video distribution, Internet Protocol Television (IPTV), and other high-bandwidth services.
The possibility of transmitting 100-Gbps wavelengths on existing or new Greenfield DWDM systems improves
return on investment by increasing the overall capacity per fiber pair without impacting the unregenerated
transmission distance, which can be covered through the advance modulation schemes. The scale of 10 Gbps
to 40 Gbps and now to 100 Gbps multiplies by a factor of 10 the bandwidth that can be transported over existing
fiber networks.
The new Coherent Polarization-Multiplexed Differential Quadrature Phase Shift Key (CP-DQPSK) modulation
enables 100-Gbps capacity transmission over existing 10/40-Gbps networks, up to 3000 km, thus enabling Ultra
Long Haul (ULH) networks of unregenerated optical links.