Cisco ONS 15216 4-Channel Optical Add/Drop Multiplexers Data Sheet

The Cisco ONS 15216 4 Channel Optical Add/Drop Multiplexers (OADMs) are a set of passive OADMs that allow the Cisco ONS 15454 Multiservice Transport Platform (MSTP) to address the edge of the optical network in a cost-effective manner without sacrificing operational ease of use. The Cisco ONS 15216 4 Channel OADMs are well suited to applications with minimal wavelength requirements and tight space and power constraints, such as cell site and customer premises terminations. Ten models are available, covering a 40-channel 100-GHz channel plan.

The Cisco ONS 15216 4 Channel Optical Add/Drop Multiplexer

Applications

The Cisco ONS 15216 4 Channel OADM supports standard network topologies such as point-to-point and ring. With the introduction of omnidirectional and colorless Reconfigurable Optical Add-Drop Multiplexer (ROADM) functionality on the Cisco ONS 15454 MSTP, the combined products allow additional network topologies, such as the termination of a spur or rings, originating on a Cisco ONS 15216 4 Channel OADM, into the colorless ports of the ROADM node (Figure 2). This configuration does not consume a ROADM degree, allowing the node to scale beyond eight directions of connectivity in a mesh-ROADM application.

OADM Nodes in a Spur Configuration Interconnecting with a Colorless Mesh ROADM Node

Another application for the Cisco ONS 15216 4-channel OADMs is as the add/drop stage of a single-module ROADM node. When only a small number of channels are required to add/drop at a ROADM node, using one or more 4-channel OADMs can save costs and space compared to the typical configuration using the Cisco ONS 15216 Mux/Demux 40 Channel Patch Panel. When the number of add/drop channels exceeds the deployed capacity of the OADMs, additional units can be added or replaced with a Cisco ONS 15216 Mux/Demux 40 Channel Patch Panel without affecting the service of existing pass-through channels.

An OADM Used as the Add/Drop Stage of a Single-Module ROADM

400G transmission with Cisco ONS 15216 4-channel OADMs

There has been a recent update to the technical specification of the Cisco ONS 15216 4-channel OADMs. Cisco released new 400G capable digital pluggable optics, namely the QSFP-DD 400G ZR/ ZR+ and the 400G-CFP2-DCO. A much sought after customer application is to use this OADM filters with these new 400G optics. The QSFP-DD and CFP2-DCO pluggable optical modules will be hosted on Cisco platforms like the NCS1000 and the NCS2000. The signal from these modules are fed to this Cisco ONS 15216 4-channel OADMs. The OADMs could be set in a linear or ring topology with 400G circuits in a point-to-point or hub-spoke overlay atop this physical topology.

But the existing technical specification (specifically the operating wavelength bandwidth) of the Cisco ONS 15216 4-channel OADMs, did not allow the transmission of 400G signals. To meet this end, the specification of these Cisco ONS 15216 4-channel OADMs underwent a minor update to support the wideband required for 400G transmission. It is critical to note that, while the product itself has undergone a version-up for the improved specifications, the Cisco PID (product ID) for these OADM modules continue to be the same as before; as what’s mentioned in this datasheet below as well. Lastly, the newer versions of the OADM are also backward compatible to the older versions.

Typical point-to-point application with Cisco 4-channel OADM and 400G-CFP2-DCO

Update to the Cisco ONS 15216 4-Channel OADM specification

The OWB: Operating wavelength bandwidth, is the channel bandwidth centered on a 100 GHz-spaced ITU grid. The erstwhile OADMs had an OWB (of +/- 15 GHz) to support legacy applications alone. With the new version of the Cisco ONS 15216 4-Channel OADM, the following technical specification updates were done to facilitate the 400G transmission:

The OWB was extended (to that of +/- 26 GHz) to support 400G transmission.

The minimum bandwidth specification was increased.

The detailed specifications are mentioned in table 2, below.

Edge Mounting Bracket

A Cisco ONS 15216 4 Channel OADM occupies a single position in the Cisco ONS 15216 Edge Mounting Bracket. The mounting bracket occupies one Rack Unit (1RU) and mounts into a standard-19-inch rack. It has four positions for mounting OADMs.

Up to Four OADMs Mount into a 1RU Edge Mounting Bracket

Features and benefits

The Cisco ONS 15216 4 Channel OADM provides the following customer benefits:

●      Cost-effective DWDM add/drop capability

●      Best-in-class operational efficiency, with zero electrical power requirements

●      High port density: four OADMs can be mounted in a 1RU bracket

●      Low optical insertion loss for improved distance and performance

●      USB port for passive inventory management

●      Cisco Transport Controller (CTC) manageability for advanced fault isolation

●      CTP support for efficient network design verification

Product specifications

Tables 1 through 4 provide optical, mechanical, and compliance specifications for the Cisco ONS 15216 4 Channel OADMs.

Table 1.        Cisco ONS 15216 4 Channel OADM Channel Plan

Table 2.        Cisco ONS 15216 4-Channel OADM Optical Specifications

Note:      Standard OWB: Legacy applications (old spec). Extended OWB: 400G applications (source over filter)

Table 3.        Cisco ONS 15216 4-Channel OADM Optical Specifications for 400G-DCO applications, true values

Table 4.        Cisco ONS 15216 4-Channel OADM General Specifications

Table 5.        Environmental and Mechanical Specifications for Cisco ONS 15216 4 Channel OADM and Edge Mounting Bracket

Table 6.        Regulatory compliance

Table 7 provides ordering information for the Cisco OSC OADM and Edge Mounting Bracket.

Table 7.        Ordering information

To place an order, visit the Cisco Ordering Home Page. To download software, visit the Cisco Software Center.

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