Fiber-Mart, worldwide leading supplier in fiber optic network, fttx, fiber cabling, fiber testing.

by Fiber-MART.COM Ratified in 2006, 10GBASE-T is the standard to provide 10Gbqs connections over balanced twisted-pair copper, including Category 6A unshielded and shielded cabling. It provides great flexibility in network design due to its 100-meter reach capability. An immediate use for 10GBASE-T is to build the data center access-layer network that connects servers to access switches. But is it the best options for 10G data center? Understanding this requires an examination of the pros and cons of current 10GbE media options.   10GBASE-CX4 10GBASE-CX4 was the first favorite for 10GbE deployments, however its adoption was limited by the bulky and expensive cables, and its reach is limited to 15 meters. The large size of the CX4 connector prohibited higher switch densities required for large scale deployment. Larger diameter cables like 10GBASE-CX4 are purchased in fixed lengths resulting in challenges to manage cable slack. As a result, pathways and spaces may not be suf...

by Fiber-MART.COM Defined in 2002, XFP (10 Gigabit Small Form Factor Pluggable) is a hot-swappable and protocol-independent transceiver for 10G high-speed computer network and telecommunication links. Except for XFP, there are SFP and SFP+ transceivers available for 10G connectivity. These devices plug into a special port on a switch or other network device to convert to a copper or fiber interface. So what is the difference between them? The following passage will provide a satisfying solution to you.   What Is XFP? XFP is 10 Gigabit transceiver operating at wavelengths of 850nm, 1310nm or 1550nm. This module combine transmitter and receiver functions in one compact, flexible, and cost-effective package. The physical dimensions of the XFP transceiver are slightly larger than the original small form-factor pluggable transceiver (SFP). XFP transceiver modules are available with a variety of transmitter and receiver types including the SR, LR, ER and ZR. The maximum working ...

by Fiber-MART.COM 10GbE technology nowadays is becoming more pervasive as enterprises grow their networks and support more bandwidth-intensive application. In the meanwhile, 10GbE functionality can provide immediate performance benefits and safeguard a company’s investment well into the future. The supporting 10G fiber optic transceivers are designed for 10Gbit/s data transmission applications including 10 Gigabit Ethernet, 10 Gbit/s Fiber Channel, Synchronous optical networking. After years of development, there has been various different form factors and optics types introduced—10G XENPAK, 10G X2, 10G XFP and 10G SFP+. This article will have a brief introduction to these 10G optical transceivers.   XENPAK   XENPAK is the first 10G fiber optic transceiver. It is a highly integrated, serial optical transponder module for high-speed, 10Gbit/s data transmission application. XENPAK modules designed XAUI interface and knowledge shaping (CDR) function, which comply with ...

by Fiber-MART.COM Fiber optic connectors , detachable (active) device connected between the fiber and the fiber, the two fiber end face precision docking up to launch the optical output of light energy to maximize the coupling to the receiving fiber,and because of its involvement in the optical link system impact be minimized, which is the basic requirements for fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and the performance of optical transmission systems.   Fiber Optic Connector is an important components used in the fiber optic network. It is also the key part used in fiber optic patch cord and fiber optic pigtail. There are many kinds of fiber optic connectors.we supply one piece fiber optic connectors various types, including standard connectors and irregular types, epoxy types. And fiber optic types include: SC fiber optic connector, FC fiber optic connector, ST fiber optic connector,LC fiber optic connector,MU fiber optic...

by Fiber-MART.COM When you install and terminate fiber optic cables, you always have to test them. A test should be conducted for each fiber optic cable plant for three main areas: continuity, loss, and power. And optical power meters are part of the toolbox essentials to do this. There are general-purpose power meters, semi-automated ones, as well as fiber optic power meters optimized for certain types of networks, such as FTTx or LAN/WAN architectures. It’s all a matter of choosing the right gear for the need.   Here is a quick guide to fiber optic power meters and how they work.   Optical power meters are commonly used to measure absolute light power in dBm. For dBm measurement of light transmission power, proper calibration is essential. A fiber optic power meter is also used with an optical light source for measuring loss or relative power level in dB. To calculate the power loss, optic power meter is first connected directly to an optical transmission device t...

by Fiber-MART.COM Fiber optic cable  has become apparent that fiber-optics are steadily replacing copper wire as an appropriate means of communication signal transmission. They span the long distances between local phone systems as well as providing the backbone for many network systems. Other system users include cable television services, university campuses, office buildings, industrial plants, and electric utility companies.   There are three types of fiber optic cable commonly used:  single mode, multimode and plastic optical fiber (POF).  Although fibers can be made out of transparent plastic, glass, or a combination of the two, the fibers used in long-distance telecommunications applications are always glass, because of the lower optical attenuation.  Both multi-mode and single-mode fibers are used in communications, if you need to transmit less data over longer distances, use single mode fiber optic cables. For a greater data capacity over shorter...

by Fiber-MART.COM Unlike sources and power meters, which measure the loss of the fibre optic cable plant directly, the OTDR works indirectly. The source and meter duplicate the transmitter and receiver of the fibre optic transmission link, so the measurement correlates well with actual system loss. The OTDR, however, uses unique phenomena of fibre to imply loss. The biggest factor in optical fibre loss is scattering. It is like billiard balls bouncing off each other, but occurs on an atomic level between photons (particles of light) and atoms or molecules. If you have ever noticed the beam of a flashlight shining through foggy or smokey air, you have seen scattering. Scattering is very sensitive to the colour of the light, so as the wavelength of the light gets longer, toward the red end of the spectrum, the scattering gets less. Very much less in fact, by a factor of the wavelength to the fourth power - that's squared-squared. Double the wavelength and you cut the scattering ...

by Fiber-MART.COM In many of my previous articles on fiber optic testing, I have mentioned optical time-domain reflectometers (OTDRs). OTDRs are valuable fiber optic testers when used properly. Improper use, however, can be misleading and, in my experience, can contribute to expensive mistakes for the contractor. I have been personally involved in several instances where misapplication of OTDR testing has cost the contractor as much as $100,000 in wasted time and materials. Needless to say, it’s extremely important to understand how to use these instruments correctly.   An insertion-loss test made with a light source and power meter is simple and similar in principle to how a fiber optic link works. A light is placed on one end of the cable, and a power meter measures loss at the other end, just like a link transmitter and receiver use the fiber for communications.   An OTDR, however, works like radar. It sends a pulse down the fiber and looks for a return signal, c...

by Fiber-MART.COM Communications networks never go slower, never get simpler, and never stay the same. Likewise, certification testing for fiber-optic cabling has also changed.   New test equipment and enhanced testing regiments help ensure that cabling can support the new demands placed on networks. Born from legacy test equipment for telecommunications networks, some of these fiber testers were difficult to use. But a new generation of fiber test equipment is designed to make it easy to certify fiber to the latest standards.   Not long ago, the state-of-the-art for fiber-optic cabling was the 100Base-FX standard from the Institute of Electrical and Electronics Engineers , which supported a bit rate of 100 Mbits/sec over a channel with an attenuation of 11 decibels (dB). Today, for IEEE 10GBase-S to support a transmission rate 100x higher than 100Base-FX, the transmission channel must attenuate the light by no more than 2.6 dB. It is this tightening of requirements...

by Fiber-MART.COM Fiber optic technology has proven itself as an indispensable component for network backbone and other high-demand applications as it generally offers greater bandwidth than traditional copper cable. However, fiber optic cables are made of a specialized glass-like material that costs more to manufacture than traditional copper networking cables. Additionally, the interfaces on either end of the cable have often been required to be highly complex transceivers that required a large amount of intricate configuration to perform optimally. That’s the main obstacle that has remained to widespread adoption of fiber optic networking.   But recently, as technology has improved, the price of fiber optic media has fallen to the degree, thus with its obvious advantages over copper cable,  fiber optic cable  are feasible and affordable for networking applications. As for the optical interfaces, with Cisco GLC-LH-SM fiber optic transceivers, those obstacles are ...

by Fiber-MART.COM SFP optical module is a compact optical transceiver module used in communication field.  SFP optical transceivers  are designed to support SONET/SDH, Fast Ethernet, Gigabit Ethernet, Fibre Channel and other communications standards. It interfaces a network device motherboard (switch, router, media converter or similar device) to a Fiber Channel or Gigabit Ethernet optical fiber cable at the other end. SFP transceivers are available in a wide range of data rates including 155M, 622M, 1.25G and 2.5G, which allows users to choose the most suitable transceiver for each link. Today’s article will illustrate the most popular 1.25G SFP transceivers.   Description of SFP Transceiver   SFP modules can be divided into different types according to different standard. Here is what you need to know about SFP modules. The transmission distance of a SFP is up to 120km for single-mode and 2km for multimode fiber. The SFP fiber transceiver could be dual f...

by Fiber-MART.COM As enterprises are striving for high reliability and performance as well as seamless data access and reporting, industrial networks are becoming more sophisticated. In terms of cabling solutions, it is essential to use the industrial Ethernet cable to achieve reliable performance. However, with so many fiber optics for sale, to select a right cable for broadband connection services is challenging. Coaxial cables and twisted pair or fiber optic cables are available for network connectivity. So which one is an ideal choice, coaxial cable or twisted pair cable? Is the fiber optic cable that fits your needs most? This article outlines the coaxial cable, twisted cable and fiber optic cables to help you select the right cable for your network.   Describing Coaxial Cable   Coaxial cable , or coax cable, is a single wire usually copper wrapped in a foam insulation. Because of its insulating property, coaxial cable can carry analogy signals with a wide rang...

by Fiber-MART.COM Proper selection of  fiber optic cables  and connectors for specific uses is becoming more and more important as fiber optic systems become the transmission medium for communications and aircraft applications, and even antenna links. Choices must be made in selecting fiber optic cables and connectors for high-reliability applications. This article provides the knowledge for how to make appropriate selections of fiber optic cable and connector when designing a fiber optic system.   Fiber Optic Cable Selection To select a fiber optic cable, you have to make choices of both the fiber selection and the cable construction selection.   Fiber Selection The three major fiber parameters used in selecting the proper fiber for an application are bandwidth, attenuation and core diameter.   Bandwidth: The bandwidth at a specified wavelength represents the highest sinusoidal light modulation frequency that can be transmitted through a leng...