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  by www.fiber-mart.com Optical fiber jumper (also known as optical fiber patchcord) refers to the fact that both ends of the optical cable are equipped with fiber optical connectors, which are used to realize the connection of the optical path. Optical fiber jumper (Optical Fiber Patch Cord / Cable) is similar to coaxial cable, except that there is no mesh shield. At the center is a glass core for signal transmission. In multimode fiber, the diameter of the core is 50μm~65μm, which is roughly equivalent to the thickness of human hair. The diameter of single-mode fiber core is 8μm~10μm. The fiber core is surrounded by a glass envelope with a lower refractive index than the core to keep the optical fiber in the core. The Kevlar and outer jacket( LSZH or PVC) is used to protect fiber core.   The types of Fiber Optical Jumper   LC fiber jumper  is developed by BELL (Bell) Research Institute. The connector is similar to SC and smaller than SC. The modular jack latch with...

  by www.fiber-mart.com There are a dizzying number of bulk Ethernet cable type available on the market, corresponding to a array of standards detailing the configuration and performance specification needed to support the increasingly faster data rates and larger bandwidths of incoming technologies. Of which stranded and solid Ethernet cables are the commonly used cable types when purchasing bulk Ethernet cable. These two different types refer to the internal conduction inside the bulk Ethernet cable. Today’s article provide the detail information about these two copper network cables.     Stranded and Solid Ethernet Cable     Stranded Ethernet cable  has multiple smaller strands of wires that are twisted together to form a single conductor. And a solid Ethernet cable is just fabricated with a single solid strand of copper for each of the 8 conductors. Figure 1 shows the inner structure of the stranded and solid Ethernet cable.   From the above pictur...

  by www.fiber-mart.com We know that fiber can carry more data over long distances than any other physical medium. That makes fiber a very precious material. And how to make the most use of your fiber plant becomes a question. So there comes Wavelength Division Multiplexing (WDM).   Why Should We Deploy  WDM  ?     WDM can multiply your fiber capacity by creating virtual fibers. The foundation of WDM lies in the ability to send different data types over fiber networks in the form of light. By allowing different light channels, each with a unique wavelength, to be sent simultaneously over an optical fiber network, a single virtual fiber network is created. Instead of using multiple fibers for each and every service, a single fiber can be shared for several services. In this way WDM increases the bandwidth and maximizes the usefulness of fiber. Since fiber rental or purchase accounts for a large share of networking costs, substantial costs can be saved throug...

  by www.fiber-mart.com Optical amplifier, with the introduction in 1990s, conquered the regenerator technology and opened doors to the WDM technology. It is mainly used to amplify an optical signal directly, without the need to first convert it to an electrical signal. There are many types of optical amplifiers, namely Raman amplifiers, erbium doped-fiber amplifiers (EDFAs), and semiconductor optical amplifier (SOA). This article will make a clearer introduction to SOA amplifier, and analyze its advantages and disadvantages.   The Basics of Semiconductor Optical Amplifier (SOA)     SOA optical amplifiers  use the semiconductor as the gain medium, which are designed to be used in general applications to increase optical launch power to compensate for loss of other optical devices. Semiconductor optical amplifiers are often adopted in telecommunication systems in the form of fiber-pigtailed components, operating at signal wavelengths between 0.85 µm and 1.6 µm an...

  by www.fiber-mart.com When DIY a home network, besides the common problems (written in the previous article “Do It Yourself for Your Home Network”), people often feel puzzled about what I should use for my jacks—inline coupler or punch down keystone jack. The first one is easy to install but adds an extra connection to the network. The last one is more cheaper and needs a punch down tool to complete the installation. Today’s article will continue to illustrate the technical differences between them, please read on.     What Is Inline Coupler?     Before we come to the comparison between inline couplers and keystone jacks, let’s have a brief overview of these two jacks. A small device for connecting two cables to make a linger cable, usually called an inline coupler or  RJ45 coupler.  Inline couplers do not provide any amplification or signal boost, and can cause attenuation and signal degradation unless they are of high quality. There are cat5e and c...

  by www.fiber-mart.com Today’s high-performance computing environments featuring by switching and routing, cloud computing and virtualization require higher network speeds, greater scalability, and higher levels of performance and reliability in data centers. Some bandwidth-hungry applications, like video streaming applications, also drive data rates to higher points. These all boost the need for a migration to 40G and 100G interfaces as 1 and 10G can’t meet the bandwidth needs well. 40G interface is QSFP (Quad Small Form-factor Pluggable) which has several standards requiring different connectors to fit cabling infrastructure, so as to achieve network connectivity. Do you know what cabling infrastructure is needed to support 40G applications? MPO/MTP cable, direct attach cable (DAC), or  LC fiber patch cable ? Have any ideas? Follow this article and find the answer.   MTP/MPO Cable MTP is a registered trademark of US Conec used to describe the connector, and MPO stands ...

  by www.fiber-mart.com In this technological world filled by fiber optic systems everywhere, one won’t fail to enjoy the benefits brought by fiber optics in daily life. In a whole fiber optic system, the most essential part should be the fiber optic cable. This cable is made up of incredibly thin strands of glass or plastic capped with the same (eg. ST ST fiber cable) or different connector types (LC ST patch cable) on the ends, used as the medium to carry information from one point to another with light-based technology. Just like electricity that can power many types of machines, beams of light can carry many types of information, so fiber optics do great to people in many ways, like broadcasting, transportation, medicine, etc..Along with the heavy use of fiber optic cables, testing the installed cables also gains importance in practical use. Since there are many standards available for testing, some people may get confused. But don’t worry. This text is written with an attempt ...

  by www.fiber-mart.com There is no doubt that fiber optic cables play an integral role in telecommunication industry. Applications like data centers, local area networks, telecommunication networks, industrial Ethernet, and wireless network are all needing fiber optics to ensure smooth connectivity. Each application requires a specific cable design based on performance requirements, environmental conditions, and installation type. The common fiber optic cables like LC to LC patch cord cannot adapt to the harsh environment (e.g. moisture environment or underground deployment), thus water-resistant fiber optic cables are highly demanded on the market due to their water proof nature. Here is what you should know about the water-resistant fiber optic cable.     Overview of Water-resistant Fiber Optic Cables     Water-resistant fiber optic cable refers to the special type of fiber optic cable that are designed and specified for installations where the cable will com...

  by www.fiber-mart.com Telecom industry embraces the prosperity of 100G optics market in 2017. With such a bright future, fiber optic market attracts a wide attention, and many vendors want a piece of the pie. The 100G optics like the CFP, QSFP28 modules and cables are varied in different standards. QSFP28 100G, along with its compact size and reliable performances, gradually becomes the mainstream form factors of the 100G optics market. QSFP28 modules come in different standards (LR4, SR4, PSM4, CWDM4), and the QSFP28 AOC and DAC cables are also available for 100G systems. Which one is ideal for your 100G network? This article attached with the detailed information of all the 100G optics, will blew your mind.   QSFP28 DAC Inside Rack: <5 m     QSFP28 passive DAC cables are launched to decrease the cost of 100G systems, which provide a cost-effective I/O solution for 100GbE connectivity within 5 m. QSFP28 to QSFP28 DACs and QSFP28 to 4x SFP28 DACs are the two com...

  by www.fiber-mart.com Since Ethernet technology came into people's use in 1970s, Gigabit Ethernet (GbE) has long deminated the local area network (LAN) applications. But when to connect servers to storage area networks (SANs) and network attached storage (NAS) or for server-to-server connections, GbE seems to be not sufficient enough. In such a case, Ethernet has developed the later technology standard as newer, higher performing iteration—10GbE.   The Institute of Electrical and Electronics Engineers (IEEE) 802.3 working group has published several standards regarding 10GbE, including 802.3ae-2002 (fiber -SR, -LR, -ER), 802.3ak-2004 (CX4 copper twin-ax InfiniBand type cable), etc. Among these standard interfaces, 10GBASE-SR is the most-widely used type, like Cisco SFP-10G-SR and Cisco SFP-10G-SR-S. With 10Gigabit connectivity becoming widely available, 10GbE technology has emerged as the connection choice for many companies to grow their networks and support new application...

  by www.fiber-mart.com The demand for better network throughput and performance has never ceased. Instead, it has become more and more vigorous. The server consolidation, virtualization, as well as networking-service performance improvements, all these have pushed the necessity for dense 40GbE switch connections in data centers.   But when migrating to 40GbE from10GbE, some companies or organizations are challenged by two main factors in re-configuring the physical layer of the network: firstly, the possible reduced reach of the OM3/OM4 multi-mode optics from 10GBASE-SR (300/400 m) to 40GBASE-SR4 (100/150m), and secondly, the need to upgrade the existing fiber optic cabling plant so as to support the IEEE-defined 40GBASE-SR4 parallel optics. In order to avoid these questions, SMF&MMF 40G QSFP+ transceiver is brought to the market.   SMF&MMF  40G QSFP+ Transceiver  Definition It’s know that a fiber optic transceiver may either operate on single-mode fibe...