MRV Products
CWDM-Modular CWDM Switches - CWDM Systems




Positioned as a midrange CWDM solution, the Fiber DriverT Modular CWDM system brings an unprecedented level of flexibility and scalability to metro and intracity district networks, and campus and enterprise networks. By separating the active data channel cards from the passive Mux/Demux unit, the modular system enables customers to mix and match the protocols they want, and to deploy their WDM solution one data channel at a time.

For more than a decade, MRV Communications has brought to market innovative optical data communication solutions that enable more and greater services to be carried over the world's growing fiber infrastructure. Today, its family of WDM solutions represents the latest evolution of fiber optimization. With hundreds of network installations worldwide, MRV is a proven leader in WDM technology.


At the heart of the Modular CWDM system is the Fiber Driver CWDM Passive Mux/Demux module. Protocol independent and requiring no power, its operation remains transparent to both the network and the end user.

The supported wavelengths of the CWDM Passive Mux/Demux modules fall within the ITU-T G.694.2 (2002) standard of 1470 nm to 1610 nm with 20 nm spacing. An optional 1310 nm service channel is available. The device is available in 4-channel and 8-channel configurations, dual and single fiber.

The Fiber Driver Modular CWDM system offers two types of data channel cards: the Multi-Rate Transponder and the SFP-to-SFP Media Module. Configured with CWDM-specific SFP (Small Form Factor Pluggable) optical transceivers, and connected externally to the Mux/Demux via optical jumper cables, the channel cards generate and maintain the active data connections.

Deployed along a WDM trunk at customer service points using MRV Communications' passive OADM technology, the Multi-Rate Transponder and SFP-to-SFP Media Module can also be used to create a sophisticated Add/Drop topology.

The Multi-Rate Transponder performs full clock and data recovery (3R) per channel at any user selected data rate from 65 Mbps to 2.7 Gbps (65 MHz to 2.7 GHz). By comparison, the SFP-to-SFP Media Module is data rate transparent and works automatically with any data rate from 100 Mbps to 2.7 Gbps (100 MHz to 2.4 GHz) while performing 2R functions.

Built into every CWDM Modular system is extensive In-Band and Out-of-Band management capabilities, including full support of SFP digital diagnostics as per SFF-8472. Management provides real-time access to information such as transceiver type (protocol, range, vendor, etc.), operating temperature, TX/RX optical power, power supply status, and transceiver supply voltage. Management also provides a means for generating management alerts and warnings when system parameters fall outside of their normal operating range.