Optical Transceiver

As an important component of networking accessories, HP ProCurve transceivers are wildly applied to their relevant switches or routes. HP SFP consists of three versions: revision A, revision B and revision C. Actually, there is no much difference between these three versions. Some enrichments will merely be added in the newest version. The “revision C” SFPs, such as J4858C, J4859C and J4860C, are supported in all ProCurve products with SFP ports. In this article we will introduce the basis of “revision C” and place emphasis on HP SFPs: J4858C vs J4859C. What Is J4858C? HP SFP J4858C transceiver module is a small form-factor pluggable Gigabit SX transceiver and designed for a wide range of HP equipment with high performance and reasonable price (FS.COM: US$ 10.00). J4858C SFP provides 1000Base-SX throughput up to 550m over multimode fibre (MMF) at a nominal wavelength of 850nm by using a LC connector. This transceiver is hot-swappable input/output device which allows a Gigabit Eth...

Life is full of choices. When it comes to transceivers, there are also a wide range of modules that you can choose from, such as GBIC, SFP, SFP+, QSFP, CFP and other modules. While, when referring to Gigabit interface module, SFP module will usually come into our mind firstly. As a matter of fact, we have automatically neglected another Gigabit interface module: GBIC. So why would GBIC be gradually replaced by SFP? What are their common points and differences? The answers will be discussed in more detail at a later stage. The Conception of GBIC and SFP/Mini GBIC GBIC stands for Giga Bitrate Interface Converter which was quite popular in 1990s. The design can be used for hot plug with SC interface. The devices are economical since they help make the unnecessity for replacing entire boards at the system level a reality. By offering a standard and hot swappable electrical interface, one gigabit port can support a diverse range of physical media from copper to lon...

DAC cable, or “Direct Attach Copper Cable”, is a type of copper cable which is similar to coaxial cable and also a form of high speed cable with SFP connectors on each end. As for the market nowadays, there are mainly three kinds of DAC according to the transmission rate: 10G SFP+ DAC, 40G QSFP+ DAC and 100G QSFP28 DAC in order to meet the increasing demand for cost-efficient delivery of more bandwidth. Today we will introduce the SFP+ DAC cable with the focus on types and advantages of SFP+ DAC cable. The Types of SFP+ Direct Attach Copper Cable SFP+ direct attach copper cable, also known as twinax cable, is an SFP+ cable assembly used in rack connections between servers and switches. It consists of a high speed copper cable and two SFP+ copper modules. It is widely used for short-distance and high speed Internet, such as gigabit network card, Gigabit switch, million server and etc. In general, SFP+ direct attach copper cable has two types, SFP+ active direct attach copper cable ...

As an elementary part in the whole optic communication systems, an optical transceiver is a device that uses fiber optical technology to transform electrical signals into optical signals so that the information could transmit in the optical fiber. And when optical signal arrives at the destination, the transceiver then transforms optical signals into electrical signals. In general, it is a device used to send and receive information which includes two parts: a transmitter and a receiver. Nowadays, optical transceiver modules are extensively used in high-speed optical communication systems which require high performance, compact package, and low power consumption. Different Optical Transceiver Types There are lots of optical transceiver types, such as SFP+ (SFP Plus) transceiver, X2 transceiver, XENPAK transceiver, XFP transceiver, SFP (Mini GBIC) transceiver, GBIC transceiver, CWDM/DWDM transceiver, 40G QSFP+ & CFP, 3G-SDI video SFP, WDM Bi-Directional transceiver and PON tr...