What type of fiber optic cable should the optical module be paired with

The optical module should be connected to a fiber optic cable that matches its type—multimode (MM) for short distances or single-mode (SM) for long distances—ensuring core size, wavelength, and connector compatibility.Fiber Type SelectionMultimode Fiber (MMF): Typically used for short-distance connections within the same building or data center. Common core sizes are 50/125 µm (OM2, OM3, OM4, OM5) or 62.5/125 µm (OM1). Multimode SFP modules often operate at 850 nm or 1320 nm wavelengths and support data rates up to 10 Gbps over distances up to 550 meters .Single-Mode Fiber (SMF): Used for long-distance connections, such as between buildings or across campuses. Standard core size is 9/125 µm, with SFP modules using laser sources to transmit data over distances up to 120 km. SMF is required for WDM (wavelength-division multiplexing) modules, which use a single fiber for multiple wavelengths .Connector and Compatibility ConsiderationsEnsure the SFP module type matches the fiber: for example, a 10G SR SFP module requires multimode fiber, while a 10G LR module requires single-mode fiber .Check the connector type (LC, SC, MPO, etc.) on both the module and the cable to ensure proper mating .For active optical cables (AOCs), the fiber and modules are pre-integrated, simplifying installation and reducing contamination risk. AOCs are ideal for short-distance rack-to-rack connections in data centers .Practical TipsKeep dust caps on both the module and cable until ready to connect to prevent contamination .Avoid bending the fiber below the minimum bending radius (typically 20 times the cable diameter for AOCs) to prevent signal loss or damage .Verify vendor compatibility and technical specifications to ensure the module and fiber operate correctly together .By selecting the correct fiber type, core size, wavelength, and connector, you ensure reliable, high-speed data transmission and prevent link failures or performance degradation.