Cisco SP-AR3-DW0G3112 10GBASE-DWDM SFP10G 1531.12 nm | Enterprise Optical — SP-AR3-DW0G3112

Protect critical fiber links with a Cisco build-to-order 10GBASE-DWDM SFP10G tuned to 1531.12 nm. This module is intended for optical environments where wavelength discipline matters and where standard transceivers are not enough. By aligning to a specific DWDM channel, it supports tighter network planning across metro, campus, and carrier-style transport designs. The 24x7x4 support model adds a service layer suited to infrastructure teams that cannot wait through extended outages or slow replacement cycles. For organizations running revenue-bearing applications, storage replication, or inter-site backbone traffic, the value is not just the optics themselves — it is the confidence that the part and support path are aligned to operational urgency. Because this is a build-to-order Cisco offering, it fits procurement workflows that require exact part matching and controlled sourcing. That makes it a strong choice when cheaper generic optics would introduce compatibility risk, inconsistent performance, or support ambiguity. Use it where the cost of a failed link is higher than the cost of doing it right the first time. Ideal For Metro fiber links requiring fixed DWDM channel alignment Campus backbone connections carrying storage or application traffic Carrier-style transport segments with strict optical planning Procurement of exact-match Cisco optics for supported infrastructure Why This Product 1 Exact 1531.12 nm wavelength instead of generic optical tuning 2 Cisco build-to-order sourcing instead of off-brand equivalents 3 24x7x4 support instead of standard replacement coverage 4 DWDM-specific alignment instead of broad-purpose transceiver fit