Månadsvis arkiv: March 2016
1000BASE SFP transceiver is a device that interfaces a network device motherboard to a fiber optic or copper networking cable. It is designed to support Gigabit Ethernet, Fibre Channel and other communications standards. It can be intermixed in combinations of IEEE 802.3z- compliant 1000BASE-SX, 1000BASE-LX/LH, or 1000BASE-ZX interfaces on a port-by-port basis. Here are the most common types of 1000BASE SFP transceiver modules.
LX stands for long wavelength. 1000BASE-LX is a physical layer specification for Gigabit Ethernet over fiber optic cabling as defined in 802.3z. 1000BASE-LX SFP transceiver uses long wavelength laser (1310 nm) over multi-mode and single-mode fiber. It is compatible with the IEEE 802.3z 1000BASE-LX standard and also supports dual data-rate of 1.25 Gbps/1.0625 Gbps with a transmission distance of 10/15/20 km. For example, HP JD119B compatible 1000BASE-LX SFP transceiver can achieve link distance of 10 km over single mode fiber. The transceiver consists of three sections: a Fabry-Perot laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. It is commonly applied for Gigabit Ethernet links, Fibre Channel Switch Infrastructure and other optical transmission systems.
Long Haul (LH) denotes longer distances while Long Wavelength (LX) denotes less energy which is obviously shorter distance. Before it was standardized 1000BASE-LX10 was essentially already in widespread use by many vendors as a proprietary extension called either 1000BASE-LX/LH or 1000BASE-LH. 1000BASE-LH SFP transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps and 70km transmission distance with single-mode fiber. This transceiver consists of three sections: a DFB laser transmitter, a APD photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472.
SX stands for short wavelength. 1000BASE-SX is a physical layer specification for Gigabit Ethernet over fiber optic cabling as defined in 802.3z. SFP-1G85-5M-xx 1000BASE-SX SFP transceiver is a cost effective transceiver module with a wavelength of 850 nm which supports dual data-rate of 1.25 Gbps/1.0625 Gbps. It is compatible with the IEEE 802.3z 1000BASE-SX standard and operates multi-mode fibers link up to 550 m. This transceiver module consists of three sections: a VCSEL laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. It is often applied for Fibre Channel links, Gigabit Ethernet links, Fast Ethernet links, etc. The following picture shows Fiberstore’s new Cisco SFP-GE-S compatible 1000BASE-SX SFP transceiver.
1000BASE-T is specified to run over four pairs of Category 5 balanced cabling. The 1000BASE-T SFP transceiver transmits data over four pairs of Category 5 twisted pair cables and is compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.3. For instance, HP 453154-B21 compatible 1000BASE-T SFP Copper RJ-45 transceiver for 100m reach over Cat 5 UTP cable uses the SFP’s RX_LOS pin for link indication and supports 1000BASE-T operation on the host system. The 1000BASE-T copper transceiver has become an attractive option by providing a simple, cost-effective performance boost while continuing to use the dominant horizontal/floor-cabling medium.
Fiberstore manufactures and supplies a complete range of 1000BASE SFP transceiver modules including 1000Base CWDM and 1000Base DWDM SFP transceivers. Both single-mode and multi-mode SFP transceivers are available for your choice. Besides, all these transceivers are 100% compatible with major brands like Cisco, HP, Juniper, Finisar, etc.