Gigabit fiber optic transceiver module GBIC SFP technical specifications

1, What is GBIC?

GBIC is the abbreviation of the Giga Bitrate Interface Converter is a gigabit electrical signal is converted to optical signal interface device. The GBIC design for hot swap. GBIC is interchangeable products meet international standards. Gigabit switch with GBIC interface design interchangeable flexible to account for a large market share in the market.

2 What is SFP?

SFP is an abbreviation of the SMALL FORM PLUGGABLE, can be simply understood as the upgrade version of GBIC. SFP module volume ratio of the GBIC module is reduced by half, more than double the number of ports can be configured in the same panel. Other features of the SFP modules and GBIC. Some switch vendors said the SFP module as small form-GBIC (MINI-GBICs). SFP module volume ratio of the GBIC module is reduced by half, more than double the number of ports can be configured in the same panel. Other features of the SFP modules and GBIC.

3, the optical fiber in which several?

Fiber into a multimode fiber and singlemode fiber in two ways: multi-mode fiber light-emitting device is relatively cheap and the construction of simple features, widely used in short distance communication, multi-mode fiber is divided into 50um core diameter and 62.5um core diameter of two types, which 62.5um more common, but the performance of 50um. The company GBIC-SX multi-mode products are suitable for both multi-mode fiber transmission distance of 550 m, (50um optical fiber) and 330 m (in 62.5um fiber).

Single-mode fiber is generally used for long-distance communication core diameter 9um, my single-mode GBIC products in single-mode fiber transmission distance of 10 km, 20 km, 70 km, 120 km. General switch vendors in single-mode, only 10 km and 70 km in two models, the 20 km product can effectively save a specific network of system integrators, the overall cost of the program. 120 km for long operating environment.
Gigabit fiber GBIC SFP technical specifications

Gigabit Interface Converter (GBIC) is a hot-swappable input / output devices, the device is plugged into Gigabit Ethernet port / slot, and is responsible for the port with the fiber-optic network to connect together.GBIC can be used in a variety of Cisco products (see Table 2) and interchangeable, and can mix and follow the IEEE 802.3z 1000BaseSX 1000 BaseLX or 1000BaseZX interface, per-port basis. Furthermore, Cisco is providing a full compliance with the IEEE 802.3z 1000BaseLX standard 1000BaseLX/LH interface, but in single-mode fiber transmission distance of up to 10 kilometers far 5 km than the average 1000BaseLX interfaces. In short, with the continuous development of new features, these modules to upgrade to the latest interface technology will be easier, so that customers’ investments to achieve maximum efficiency. Figure 1 shows the a-GBIC.

In general, the different products with the GBIC module port cabling specifications are different, whether it is the wiring type or the wiring distance

1: Use only the multimode fiber.

2: the need for mode, adjust the patch cord (CAB-GELX-625 or equivalent). Multimode fiber using the general line of the patch, 1000 BaseLX-GBIC and short link distance (tens of meters) will result in sending and receiving end of saturation, resulting in improve the bit error rate (BER). In addition, the LX / LH-GBIC with 62.5-micron multimode fiber is used in conjunction with a model, you must send and receive at both ends of the link between the GBIC and multimode fiber installation to adjust the repair line. Link distances over 984 feet (300 meters), but also requires the mode to adjust the repair line.

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