Difference between lx and sx sfp

SFP LC SX Vs. LX Transceiver

SFP LC SX transceiver

1000BASE-SX LC SFP transceiver is a fiber optic Gigabit Ethernet standard transceiver for operation over multi-mode fiber using a 770 to 860 nanometer. It works at 850nm wavelength and used only for the purposed of the multimode optical fiber with an LC connector. The link lengths of 1000BASE-SX SFP can be up to 500m with 50 microns multimode optical fiber and it can achieve 220m with 62.5 micron multimode optical fiber. This SFP LC module is highly favored by intra-building links in large office buildings, co-location facilities and carrier neutral internet exchanges.

SFP LC LX transceiver

SFP Ethernet networks. LC SFP LX transceiver uses with long-wavelength transmissions (1270-1355nm) over long cable runs of fiber optic cabling. This LC SFP module can run over both singlemode fiber and multimode fiber with a distance of up to 5km and 550m, respectively. And the SFP LC port can be connected by fiber patch cable with LC connector. 1000BASE-LX LC SFP transceiver mainly deployed for connecting high-speed hubs, Ethernet switches, and routers together in different wiring closets or buildings using long cabling runs, and developed to support longer-length multimode building fiber backbones and single-mode campus backbones.  
"1000BASE-SX: used for short-range links on multi-mode fiber, with a maximum distance of 550 meters.
1000BASE-LX: used for links on single-mode or multi-mode fiber, with a maximum distance of 10 kilometers for single-mode fiber and 550 meters for multi-mode fiber."
 

SFP Optical module
Transmission Standard	Fiber Type	Center Wavelength	Transmission Distance	Interface
1000BASE-LX/LH	9/125单模光纤	1310nm	10km	LC
1000BASE-SX	62.5/125,50/125多模光纤	1310nm	550m	LC

 
 
 
 

LX and SX SFP are two different types of Small Form-factor Pluggable (SFP) transceivers used in fiber optic networks. The main differences between them are:

 
1. Distance: The SX SFP is designed for short-range applications, typically up to 550 meters over multi-mode fiber, while the LX SFP can transmit data over much longer distances up to 10 kilometers over single-mode fiber.
 
2. Wavelength: The SX SFP uses a 850 nm wavelength for multi-mode fiber, while the LX SFP uses a 1310 nm wavelength for single-mode fiber.
 
3. Cost: The LX SFP is generally more expensive than the SX SFP, due to its longer reach and more advanced technology.
 
Overall, the choice between LX and SX SFP largely depends on the distance requirements of the network. If the distance is relatively short and requires multi-mode fiber, then an SX SFP is sufficient. However, if longer distances and single-mode fiber are required, then an LX SFP is the better choice.
 
 

1000BASE SX vs LX:

1000BASE-SX is a fiber optic Gigabit Ethernet standard for operation over multi-mode fiber using a 770 to 860 nanometer, near infrared (NIR) light wavelength. The standard specifies a distance capability between 220 meters and 550 meters. In practice, with good quality fiber, optics, and terminations, 1000BASE-SX will usually work over significantly longer distances.
 
This standard is highly popular for intra-building links in large office buildings, co-location facilities and carrier neutral internet exchanges. 1000BASE-SX SFP works at 850nm wavelength and used only for the purposed of the multimode optical fiber with an LC connector. 1000BASE-SX SFP traditional 50 microns of multimode optical fiber link is 550 meters high and 62.5 micron fiber distributed data interface (FDDI) multimode optical fiber is up to 220 meters. Take EX-SFP-1GE-SX as an example, its maximum distance is 550m with DOM support. The 1000Base-SX standard supports the multimode fiber distances.

Specified in IEEE 802.3 Clause 38, 1000BASE-LX is a type of standard for implementing Gigabit Ethernet networks. The "LX" in 1000BASE-LX stands for long wavelength, indicating that this version of Gigabit Ethernet is intended for use with long-wavelength transmissions (1270–1355 nm) over long cable runs of fiber optic cabling.
 
1000BASE-LX can run over both single mode fiber and multimode fiber with a distance of up to 5 km and 550 m, respectively. For link distances greater than 300 m, the use of a special launch conditioning patch cord may be required. 1000BASE-LX is intended mainly for connecting high-speed hubs, Ethernet switches, and routers together in different wiring closets or buildings using long cabling runs, and developed to support longer-length multimode building fiber backbones and single-mode campus backbones. E1MG-LX-OM is Brocade 1000BASE-LX SFP that operates over a wavelength of 1310nm for 10 km.
Conclusion:
Gigabit Ethernet solution over fiber that supports half- and full-duplex transmission at speeds of 1Gbps (1000mbps). The 1000Base-SX standard was developed to support lower cost multimode fiber runs in horizontal and shorter-length backbone applications. The 1000Base-SX standard supports the multimode fiber distances shown in table 1. The 1000Base-LX standard was developed to support longer-length multimode building fiber backbones and single mode campus backbones. The 1000Base-LX standard supports multimode lengths of 550m and single mode lengths of 3km.
 
 

Expand their knowledge:

 

 Can you provide more information about the compatibility of these SFPs with existing infrastructure?

 
Yes, compatibility is an important factor when selecting an SFP module for your network. Here are some factors to consider:
 
1. Interface: Check the interface type of your existing equipment, such as gigabit Ethernet, 10 Gigabit Ethernet, or Fibre Channel. Choose the SFP module that matches the interface type of your equipment.
 
2. Connector Type: Check the connector type of your existing equipment, such as LC, SC, or ST. Choose the SFP module that matches the connector type of your equipment.
 
3. Wavelength: Check the wavelength requirements of your existing equipment. Each SFP module has a specific wavelength range, such as 850 nm for SX and 1,310 nm for LX. Choose the SFP module that matches the wavelength requirements of your equipment.
 
4. Compatibility and Interoperability: Ensure that the SFP module is compatible with your existing equipment. Many vendors provide a compatibility matrix that lists the supported SFP modules for their equipment. It is important to verify compatibility with other vendors' equipment if interoperability is required.
 
5. Quality Assurance: It is vital to choose reputable brands that offer reliable and high-quality SFP modules. Checking the manufacturer's warranty and support offerings can help you ensure peace of mind should issues arise.