WDM SFP transceiver, 1.25Gbps, LC simp., 3km, 1550nm, 0-70 ° C, 3.3V, Cisco Compatible

Small Form-factor Pluggable (SFP or even mini-GBIC) is a technical standard optical transceivers insertion loss defined group of MSA in May 2001.Jedná a compact optical transceiver used in the telecommunication and data networks. It is a popular, widespread, manufacturers of active optical components massively supported by the module. Its modern design gradually displaces older GBIC. Unlike GBIC SFP module is about half the size-smaller dimensions allow the installation of active elements in the density of up to 48 SFP ports per 1U. SFP module is fitted usually duplex LC connector (except some single-fiber bi-directional SFP and copper SFP transceivers). SFP modules are produced and delivered in many varieties depending on the type of fiber, transmission protocol bridging distances (up to 200 km), and wavelength. Most of the modules can be optionally supplied with digital diagnostics (DMI) compliant with SFF-8472 MSA
Gradually leads to the development of formats and so today instead of the old GBIC slot found in new facilities rather SFP slots for SFP modules. For higher speeds are gradually squeezed out of the market at 10 Gbps XENPAK and X2 formats-they are now in new installations being replaced by newer formats type XFP or SFP + (SFP Plus).
Optical transceivers (optical modules) are standard devices/media converters and plug for use in third-party products. As the name suggests transceivers in itself always organized transmitter/receiver and a transmitter/reciever. This also implies that for two-way traffic we need to have a second fiber.
For two-way traffic over a single fiber WDM use special modules, which operate by transmitting different wavelengths (supplied in pairs type A and type B), and they are already being built WDM filter.
For optical transceivers insertion loss is usually given distance in kilometers, which is to be given module run, more important, however, is an accurate indication Power Budget, a power reserve in units of dB. The number of kilometers is calculated precisely because of the value of PB and then it depends how to calculate the attenuation range in kilometers was used-every manufacturer can count on another figure coefficient and the number of km can be misleading.
Some modules (eg. Multi-rate operator modules for SDH or 4.25 tri-rate modules for Fiber Channel) can work in different transmission speeds and thus also different module parameters depending on the type of application where we use it. The data referred to in the parameters www.alternetivo.cz products are thus always given the highest possible transmission speed of the module. To illustrate with 4,25Gbps Multirate products is reported for PB 4,25Gbps, ie. when using the same module will be 1Gbps PB (power reserve) is greater than specified in the parameters.
The modules may or may not be equipped with the so-called. Set of diagnostic functions. Diagnostics indicate on their products by various manufacturers differently DMI = Digital Monitoring Interface, DDM = Digital Diagnostic Monitoring or DDMI = Digital Diagnostic Monitoring Interface In fact, the DMI = = DDM DDMI. Using this feature set, we can, if given element (router, switch) supports monitoring the operating temperature, operating voltage level of the transmitted signal and the received signal level at the receiver etc.
Features:

Name	Value
Format:	SFP
Transmission type:	WDM (Bi-Di) 1 thread
Connector Type:	LC simplex
For fiber/cable:	SM
Transfer rate:	1000 Mbps
Transfer protocol:	100Mbps Ethernet
Reach	3 km
Compatibility:	Cisco
Wavelength TX:	1550nm
Wavelength RX:	1310
Operating temperature range (° C):	0-70