Maintain optical path performance where dispersion control is non-negotiable. Cisco DCF OF -1150 psnm and 8 dB loss is specified for transport environments that require tightly managed chromatic dispersion compensation and a defined insertion-loss profile. That makes it a fit for service-provider and carrier-grade optical designs where link engineering must stay within budget from end to end. This part is intended for deployments where the optical layer is planned with precision, not approximated. The -1150 psnm dispersion figure and 8 dB loss profile give network teams a clear basis for system design, helping align span planning, amplifier strategy, and overall optical margin. For teams supporting critical transport infrastructure, that clarity reduces guesswork and supports more predictable network behavior. Choose this Cisco component when the cost of optical uncertainty is higher than the cost of getting the design right. It is suited to environments where transport stability, engineering discipline, and vendor consistency matter more than generic alternatives.