SFP modules & transceivers

How to choose

• ✓Form factor and speed: SFP for gigabit ports, SFP+ for 10G, SFP28 for 25G, QSFP+ for 40G, QSFP28 for 100G. Make sure the slot on your equipment matches the chosen form factor.
• ✓Fiber type: multimode (OM3, OM4) is used over short distances up to 550 m, single-mode (OS2) is used for lines from 10 km and above. Types cannot be mixed without special converters.
• ✓Wavelength and range: standard 850 nm for multimode, 1310 nm and 1550 nm for single-mode. WDM modules (1310/1550 nm or BiDi) allow data to be transmitted over a single fiber in two directions, which halves the consumption of cable infrastructure.
• ✓Optical power budget (dB): the difference between the transmitter power and the receiver sensitivity must cover the losses on the route with a margin of at least 3 dB. Clarify this parameter when choosing modules for long distances.
• ✓Compatibility with equipment: some switches and routers check the module manufacturer's code (OUI) and block third-party transceivers. Check with the supplier whether your equipment supports the chosen module.
• ✓CWDM/DWDM technology: CWDM multiplexers allow several channels to be transmitted over a single fiber, multiplying the capacity of an existing fiber-optic line without laying new cables.
• ✓Direct Attach (DAC): passive QSFP28 or SFP+ copper cables with integrated transceivers at the ends — an economical solution for connecting equipment within a rack or in adjacent racks at a distance of up to 3-5 m.

Applications

• ✓Corporate enterprise networks: connecting access, aggregation and core layer switches, setting up optical uplinks between floors and buildings.
• ✓Data centers: high-speed 25G, 40G and 100G lines between servers, storage systems and top-of-rack switches; Direct Attach cables for in-rack connections.
• ✓Carrier and provider networks: setting up backbone channels between points of presence, connecting subscribers via GPON and other optical access technologies.
• ✓Video surveillance systems at extended sites: transmitting IP camera streams from remote buildings, perimeters, highways and industrial areas over optical lines.
• ✓Industrial sites and transport infrastructure: oil and gas enterprises, airports, railway hubs, where copper cables are unacceptable due to electromagnetic interference or long distances.
• ✓Government and municipal networks: connecting geographically distributed institutions, video monitoring of urban spaces, the "smart city."

Brands and models in the catalog

• ✓Pixietech: the main brand in this catalog category of SAT Solutions, represented by a wide line of optical modules and media converters. The range includes SFP WDM modules with a range from 20 to 80 km, SFP+ 10G, SFP28 25G, QSFP28 100G, as well as Direct Attach 40G and 100G cables for in-rack connections.
• ✓Optical transceivers for multimode fiber: 850 nm modules with a range of up to 550 m (7.5 dB) for connections within buildings and data centers — an economical alternative to single-mode solutions on short routes.
• ✓Single-mode WDM modules: the line includes solutions for 1310 nm and 1550 nm for distances of 10, 20 and 80 km, which covers needs from urban campus networks to intercity backbones.
• ✓Pixietech media converters: devices for interfacing copper 10/100/1000Base-T ports with optical 100/1000Base-FX interfaces in both directions over wavelengths of 1310/1550 nm — a convenient solution for connecting equipment without an SFP slot to optical infrastructure.
• ✓CWDM multiplexers: single-fiber 4-channel devices for combining several streams on a single fiber — they allow the capacity of a fiber-optic line to be increased 4 times without laying additional cable.

Frequently asked questions