The SFP form factor made optics a field-replaceable decision. GRT SFP modules cover the gigabit tier across the fiber disciplines the catalogue organises by: single-mode for distance, multimode for short runs, copper for RJ45 presentation, and BiDi for single-strand working. They populate GRT SFP network cards and media converters, and third-party switches and routers whose platforms accept them.
Gigabit optics remain the right tool for management networks, fiber-to-the-desk, building risers and the long tail of access infrastructure that will never need 10G. Buying them from the same manufacturer as your adapters and converters removes the finger-pointing when a link misbehaves: one vendor owns the whole path.
Variants in the family
- Single-mode SFP — 1310 / 1550 nm, long reach
- Multimode SFP — short-reach, in-building
- Copper SFP — gigabit over RJ45
- BiDi SFP — both directions on a single strand
Can I mix SFP modules from different vendors on one link?
The two ends of a link must match in wavelength and fiber type, whatever the brand. For a known combination we recommend GRT modules at both ends, so one vendor answers for the whole link.
What is the difference between SFP and SFP+?
Same shell, different electrical generation: SFP is the gigabit class, SFP+ is the 10G class. SFP modules generally work in SFP+ cages at gigabit rate; the reverse is not true.