Description
The Cisco 15216-FLD-4-557 is a high-performance optical filter module designed for use in dense wavelength-division multiplexing (DWDM) networks. Specifically engineered for integration into Cisco’s Optical Transport platforms, this module supports four fixed wavelengths centered around the 1557 nm region. Its passive design ensures low insertion loss and high channel isolation, making it ideal for long-haul and metro applications where signal integrity is critical. The unit is housed in a compact, rack-mountable form factor that fits seamlessly into Cisco 15216 series filter shelves.
Built with reliability in mind, the 15216-FLD-4-557 requires no electrical power and minimal maintenance, making it a cost-effective solution for expanding optical capacity. The module supports ITU-compliant DWDM channels with precise wavelength spacing, ensuring compatibility with a wide range of optical transceivers and amplifiers. Used units typically retain full optical performance, provided they are handled and stored properly. This component is especially valuable for network operators seeking to scale their infrastructure without the expense of new hardware.