The FRM220-OADM-57 is a high-performance, one-channel, two-fiber CWDM (Coarse Wavelength Division Multiplexing) Optical Add-Drop Multiplexer designed for efficient wavelength management in optical networks. Operating at a central wavelength of 1571nm, it allows for seamless addition and subtraction of optical channels at this specific wavelength without electrical conversion, ensuring minimal signal degradation. Optimized for East/West line-side configurations, it provides flexibility in connecting multiple network segments while maintaining low insertion loss and high channel isolation. The device supports both add and drop functions, enhancing network flexibility and minimizing infrastructure needs. With its reliable performance and compliance with industry standards, the FRM220-OADM-57 is ideal for metro and long-haul networks, enabling the efficient allocation of optical resources and enhancing the capacity of existing fiber infrastructures.