The original SFP optical module primarily supports data rates up to 1. 25 Gbps for Gigabit Ethernet and Fibre Channel applications. These transceivers remain widely used for access layer connectivity, legacy backbone links, and specialized industrial equipment. An SFP interface on networking hardware is a modular slot for a media-specific transceiver, such as for a fiber-optic cable or a copper. The industry-standard Cisco Small Form-Factor Pluggable (SFP) Gigabit Interface Converter (Figure 1) links your switches and routers to the network. Despite the rapid adoption of 10G and higher-speed. SFP optical modules are the unsung heroes of fiber networking—the essential interface that converts electrical signals from network equipment into optical signals for transmission over fiber optic cable, and vice-versa. Key characteristics include: Speed: 1 Gbps, 10 Gbps, 25 Gbps, or higher. It is also known as a small form-factor pluggable or mini GBIC.
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