1000 BASE transceivers are kind of small form-factor pluggable (SFP) transceivers. They are used for both telecommunication and data communications applications.1000 BASE transceivers links your switches and routers to the network. The hot-swappable input/output device plugs into a Gigabit Ethernet port or slot.

Ethernet was the result of the research done at Xerox PARC in the early 1970s. Ethernet later evolved into a widely implemented physical and link layer protocol. Fast Ethernet increased speed from 10 to 100 megabits per second (Mbit/s). Gigabit Ethernet was the next iteration, increasing the speed to 1000 Mbit/s. The initial standard for Gigabit Ethernet was produced by the IEEE in June 1998 as IEEE 802.3z, and required optical fiber. 802.3z is commonly referred to as 1000BASE and launches 1000 BASE transceivers.

There are five physical layer standards for Gigabit Ethernet using optical fiber (1000BASE-X), twisted pair cable (1000BASE-T), or shielded balanced copper cable (1000BASE-CX). And that define the different kinds of 1000 BASE transceivers.1000 BASE transceivers incorporate significant interface circuitry and can only be used for gigabit Ethernet, as that is the interface they implement. They are not compatible with (or rather: do not have equivalents for) Fiber channel or SONET.

There are different types of 1000 BASE transceivers:

• 1000BASE-T SFP for Copper Networks
• 1000BASE-SX SFP for Multimode Fiber Only
• 1000BASE-LX/LH SFP for Both Multimode and Single-Mode Fibers
• 1000BASE-EX SFP for Long-Reach Single-Mode Fibers
• 1000BASE-ZX SFP for Long-Reach Single-Mode Fibers
• 1000BASE-BX10-D and 1000BASE-BX10-U SFP for Single-Fiber Bidirectional Applications
• 2-Channel 1000BASE-BX10-D for Single-Fiber Bidirectional Applications
• 1000BASE-BX40-D and 1000BASE-BX40-U for Single-Fiber Bidirectional Applications
• 1000BASE-BX80-D and 1000BASE-BX80-U for Single-Fiber Bidirectional Applications
• 100/1000BASE-LX SFP for Long-Reach Single-Mode Fibers

The Telecommunications Industry Association (TIA) created and promoted a standard similar to 1000BASE-T that was simpler to implement, calling it 1000BASE-TX (TIA/EIA-854). The simplified design would have, in theory, reduced the cost of the required electronics by only using two unidirectional pairs in each direction instead of four bidirectional pairs. However, this solution has been a commercial failure, likely due to the required cabling and the rapidly falling cost of 1000 BASE transceivers.

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What is 1000BASE-SX?

1000BASE-SX is a gigabit Ethernet standard over fiber optic. It is used for operating on multimode fiber with a short wavelength of 770 to 860 nanometers (typically 850nm). The “SX” stands for short reach over multimode fiber. 

1000BASE-SX defines a maximum length of 220 meters for 62.5μm fiber distributed data interface (FDDI) multimode fiber, 275 meters for 62.5μm/200MHz·km multimode fiber, and 550 meters for 50μm/500MHz·km multimode fiber. However, It supports a 1km distance over laser-optimized OM3, OM4, or OM5 multimode fiber.

This standard is widely used in large office buildings, co-location facilities, and carrier-neutral Internet exchanges. 

 

What is 1000BASE-LX?

1000BASE-LX is a gigabit Ethernet standard over fiber optic. It is for operating on single mode fiber (SMF) or multimode fiber (MMF), with a long wavelength of 1270 to 1355 nanometers (typically 1310nm). The “LX” stands for long reach. 

1000BASE-LX supports 10km over single mode fiber. Some industry vendors also provide an extended distance of 20km, which is not defined in the standard. 

When used with multimode fiber, it supports a max 550 meters distance. Please note a specific conditioning patch cord may be required for link distances higher than 300 meters.

Due to the low cost and extended reach that meets most enterprise networks, 1000BASE-LX has become one of the most popular standards.

 

What is 1000BASE-EX?

1000BASE-EX is a non-standard but widely used industry term for Gigabit Ethernet fiber optic transmission. The Letter “EX” means extend reach, which supports 40km over single mode fiber. 

Like 1000BASE-LX, it uses the same long wavelength of 1310nm but provides a higher power budget to achieve more considerable distances. Sometimes, many manufacturers also call it 1000BASE-LH (Long Haul). 

1000BASE-EX usually costs more on the optical components, so offered at a higher price than 1000BASE-SX and 1000BASE-LX. 

 

What is 1000BASE-ZX?

1000BASE-ZX is a non-standard but widely used industry term for 70km (43 miles) Gigabit Ethernet transmission. It uses a 1550 nm long wavelength over single mode fiber. The transceiver vendors often provide 80km (50 miles) versions to replace the standard 1000BASE-ZX.

Some manufacturers offer 120 kilometers (75 miles) distance using single-mode fiber, defined as 1000BASE-EZX or 1000BASE-ZX120. Since the 1000BASE-EZX transceivers offer very high transmitter power and receiver sensitivity, you must add a proper fiber attenuator to avoid bit errors caused by overload.

 

SEESUO's 1000BASE-SX SFP Solutions

1. GLC-SX-MM(Cisco compatible)
GLC-SX-MM is 1000BASE-SX SFP fiber optic transceiver for MMF and it works at 850nm wavelength, the Cisco GLC-SX-MM SFP is compatible with IEEE 802.3z and could reach 550 meter working distance via 50/125 MMF, on 62.5/125 MMF it could reach 220 meters. GLC-SX-MM SFP is hot-swappable module that fit for Gigabit Ethernet port or slot and link the port with the network, GLC-SX-MM module is about 1.3 cm x 5.7 cm x 0.9 cm in dimension, and 75g in weight.

2. SFP-GE-S(Cisco compatible)
SFP-GE-S is a multimode type Cisco SFP transceiver. It is a 1000BASE-SX SFP transceiver with digital optical monitoring (DOM), fiting for both 50/125 or 62.5/125 MMF with the working wavelength at 850nm. The max distance for SFP-GE-S is 550 meters. The SFP-GE-S transceiver is for short wavelength applications, power budget is 7.5 dB. It uses dual LC fiber connector interface, with the size about 8.5 mm x 13.4 mm x 56.5 mm.

3. J4858A(HP compatible)
This HP compliant J4858A is a 1000BASE-SX SFP 850nm 550m transceiver module. The J4858A transceiver module provides a low cost high-performance connection. The J4858A is 100% compatible with all HP series switches and modules which support SFP transceivers.

4. J4858B(HP compatible)
This HP compliant J4858B is a 1000BASE-SX SFP 850nm 550m transceiver module. The J4858B transceiver module provides a low cost high-performance connection. The J4858B is 100% compatible with all HP series switches and modules which support SFP transceivers.

5. J4858C(HP compatible)

6. A6515A(HP compatible)
This HP compliant A6515A is a 1000BASE-SX SFP 850nm 550m transceiver module. The A6515A transceiver module provides a low cost high-performance connection. The A6515A is 100% compatible with all HP series switches and modules which support SFP transceivers.

7. JX-SFP-1GE-SX(Juniper compatible)
Juniper compatible JX-SFP-1GE-SX is a 1000BASE-SX SFP 850nm 550m transceiver.

8. EX-SFP-1GE-SX(Juniper compatible)

9. 320-2881(Dell compatible)
This Dell compliant 320-2881 is a 1000BASE-SX SFP 850nm 550m transceiver module. The 320-2881 transceiver module provides a low cost high-performance connection. The 320-2881 is 100% compatible with all Dell series switches and modules which support SFP transceivers.

10. 790-10070(Dell compatible)
This Dell compliant 790-10070 is a 1000BASE-SX SFP 850nm 550m transceiver module.

Can I use a 1000BASE-LX SFP with multimode fiber?

Yes, but it is not recommended. Because the 1000BASE-LX SFPis designed for single mode fiber cabling, whereas multimode fiber is typically used with 1000BASE-SX. Therefore, you should add a mode conditioning patch cable when using a 1000Base-LX SFP for multimode fiber.

SEESUO offers a range of high-quality, high-performance SFP transceivers ranging from MM 850nm / 0.3 miles (550m) to SM 1550nm / 110 miles (180km). SFP (Small Form-Factor Pluggable) is a compact, hot-pluggable network interface module used for data communication and tele-communication applications. SFP equips with one or two fiber optic connectors (e.g. LC connectors) for connecting a fiber optic cable or sometimes an RJ45 connector for connecting a copper cable. Because of its compact size and flexibility, many Ethernet Switches come with SFP ports so individual ports can be equipped with any suitable type of transceiver as required.