Monthly Archives: December 2014

100 BASE-FX Mdeia Components

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The 100BASE-FX fiber optic media system provides all of the advantages of a 10BASE-FL fiber optic link segment, while operating ten times faster. Distances of 2 km (6561.6 feet) over multimode fiber optic cables are possible when operating 100BASE-FX segments in full-duplex mode. Considerably longer distances are possible when using single mode fiber segments. This is why the 100BASE-FX media system is a popular choice for Ethernet backbone networks. The following set of media components are used to build a 100BASE-FX fiber optic segment:

● Fiber optic cable.
● Fiber optic connectors.

Fiber Optic Cable

The 100BASE-FX specification requires two strands of multimode fiber optic (MMF) cable per link, one for transmit data, and one for receive data, with the signal crossover (TX or RX) performed in the link as shown in Figure 10-4. There are many kinks of fiber optic cables available, ranging from simple two-strand jumper cables with PVC plastic for the outer jacket material on up to large inter-building cables carrying many fibers in a bundle.

The typical fiber optic cable used for a 100BASE-FX fiber link segment consists of a graded-index MMF cable. These fibers optic cables have a 62.5 um fiber optic core and 125um outer cladding (62.5/125). The wavelength of light used on a 100BASE-TX fiber link segment is 1350 nanometers (nm). Signals sent at that wavelength over MMF fiber can provide segnment lengths of up to 2000 meters (6561 feet) when operating the link in full-duplex mode. More details on installing and using fiber optic cables and connectors can be found, Fiber optic cables and connectors.

Fiber Optic Connector

The medium-dependent interface (MDI) for a 100BASE-FX link may be one of three kinks of fiber optic connector. Of the three, the duplex SC connector shown in Figure 10-3 is the recommended alternative in the standard an is the one most widely used gy vendors. The SC connector is designed for ease of use; the connector is pushed into place and automatically snaps into the connector housing to complete the connection.
SC Connector

The ST connector may also be used. This is the same connector used for a 10BASE-FL link. It is a spring-loaded bayonet-type connector that has a key on an inner sleeve and an outer baynoet ring. To make a connection, you line up the key on the inner sleeve of the ST plug with a corresponding slot on the ST receptacle, then push the connector in and lock it in place by twisting the outer bayonet ring. According to the standard, the FFDI fiber optic media interface connector (MIC) may also be used on 100BASE-FX equipment: however, this optional connector has not been adopted by equipment vendors.

Connecting a Station to 100BASE-FX Ethernet

Figure 10-4 shows a computer equipped with a 100BASE-FX Ethernet adapter. In this example, the adapter card comes with an SC duplex connector, which makes a connection to the fiber cables that connect to the repeater hub. The repeater hub in the figure is shown with three pairs of 100BASE-FX SC connectors and built-in transceivers. A signal crossover is required to make a connection between the 100BASE-FX transceiver in the station, and the 100BASE-FX transceiver located in each repeater or switching hub port.

100BASE-FX

Fiberstore as the main professional fiber optic products manufacturer in china offer a various kinds of fiber cable connectors, FC Connectors, LC Connectors, SC Connectors, MPO Connectors and ST Connectors. You can buy fiber optic connection products on our store with your confidence. All of fiber optics supplies with high quality but low price.  Except fiber optic connector, we provide various types of fiber patch cords including single mode, multimode, multi core, and armored versions. You can aslo find fiber optic pigtails and other special patch cables here. For most of them, the SC, ST, FC, LC, MU, MTRJ, E2000, APC/UPC connectors are all available, even we supply MPO/MTP fiber cables.

LC Connector Family

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The LC connector developed by Lucent Technologies and shown in Fig.3.10 is a more evolutionary approach to achieving the goals of a SFF connector. The LC connector utilizes the traditional components of a SC duplex connector having independent ceramic ferrules and housings, with the overall size scaled down by one-half. The LC family of connectors includes a stand-alone simplex design; a “behind the wall” (BTW) connector and the duplex connector available in both single-mode and multimode tolerances are all designed using the RJ-style latch.

The outward appearance and physical size of the LC connector varies slightly depending on the application and vendor preference. Although all the connectors in the LC family have similar latch styles modeled after the copper RJ latch, the simplex version of the connector has a slightly longer body than either the duplex or BTW version, and the latch has an additional latch actuator arm that is designed to assist in plugging as well to prevent snagging in the field. The BTW connector is the smallest of the LC family and is designed as a field-or board-mounatable connector using 900-um buffered fiber and in some cases has slightly extended latch for extraction purposes. The duplex version of this connector has modified body to accept the duplexing clip that joins the two connector bodies toghther and actuates the two latches as one. Finally, even the duplex clip itself has variations depending on the vendor. In some cases the duplex clip us a solid one-piece design and must be placed on the cable prior to connectorization, while other design and must be placed on the cable prior to connectorization, while other designs have slots built into each side to allow the clip to be installed after connectorzation. In coclusion, all LC connectors are not created equal, and depending on style and manufacturer’s preference, there may be attributes that make one connector more suitable for a specific application then another.

The LC duplex connector incorporates two round ceramic ferrules with outer diameters of 1.25mm and a duplex pitch of 6.25mm. These ferrules are aligned through the traditional couplers and bores using precision ceramic split or solid sleeves. In an attempt to improve the optical performance to better than 0.10 db at these interfaces, most of the ferrule and backbane assemblies are designed to allow the cable manufacturer to tune them. Tuning of the LC connector simply consists of roating the ferrule to one of four available positions dictated by the backbone design. The concept is basically to align the concentricity offset of each ferrule to a single quadrant at 12.00; in effect, if all the cores are slightly offset in the same direction, the probalility of a core-to-core alignment is increased and optimum performance can be achieved. Although this concept has its merits, it is yet another costly step in the manufacturing process, and in the case where a tuned connector is mated with an untuned connector, the increase in performance may not be realized.

Typically, the LC duplex connectors are terminated onto a new reduced-size zipcord referred to as mini-zip. However, as the product matures and the applications expand, it may be found on a number of different cordages. The mini-zip cord is one of the smallest in the industry with an outer diameter of 1.6mm compared with the standard zipcord for an SC style product of 3.0 mm. Although this cable has passed industry standard testing, the cable manufacturers have raised some issues concering the ability of the 900-um fibers to move freely inside a 1.6-mm jacket and others involving the overall crimped pull strengths. For these reasons, some end users and calbe manufactures are opting for a larger 2.0-mm, 2.4-mm, or even the standard 3.0-mm zipcord. In application wher the fiber is either protected within a wall outlet or cabinet, the BTW connector is used and terminated directly onto the 900-um buffers with no jacket protection.

The factory termination of the LC cable assemblies is very similar to order ceramic-based ferrules using the standard pot and polish processes with a few minor differences. The one-piece design of the connector minimizes production handling and helps to increase process yields when compared with other SFF and standard connector types. Because of the smaller diameter ferrule, the polishing times for an LC ferrule may be slightly lower than the standard 2.5-mm connectors, but the real production advantage is realized in teh increase number of connectors that can be polished at one time in a mass polisher. For the reasons mentioned above and because the process is familiar to most manufacturers, the LC connector may be considered one of the eaisest SFF connectors to factory terminate.

Field termination of the LC connector has typically been accomplished through the standard pot and polish techiques using the BTW connector. However, a pre-polished, crimp and cleave connector is also available. The LCQuick Light field-mountable BTW style connector made by Lucent Technologies is a one-piece design with a factory polished ferrule and an internal cleaved fiber stub. Unlike other pre-polished SFF connectors previously discussed, the LCQuick light secures the inserted field cleaved fiber to a factory polished stub by crimping or collapsing the metallic entry tube onto the buffered portion. This is accomplished by using a special crimp tool that is designed not to damage the fibers. However, light is designed specifically for use in protected environments such as cabinets and wall outlets and has no provision for outer jacket or Kevlar protection.

LC connections allow higher density applications based on its smaller diameter. The LC connection, commonly referred to as Lucent Connection, Little Connector or Local Connector, is commonly used today for uplink modules and other devices. This connector is a “snap” type, has a ferrule diameter of 1.25mm and defined by IEC 61754-20. We offer LC fiber cables and lc lc cable, including single mode 9/125 and multimode 50/125, multimode 62.5/125, LC-LC, LC-SC, LC-ST, LC-MU, LC-MTRJ, LC-MPO, LC-MTP, LC-FC, OM1, OM2, OM3. Other types also available for custom design. Excellent quality and fast delivery.

The LC fiber patch cable cable is with a small form factor (SFF) connector and is ideal for high density applications. The LC fiber patch connector has a zirconia ceramic ferrule measuring 1.25mm O.D. with either a PC or APC end face, and provides optimum insertion and return loss. The LC fiber patch cable connector is used on small diameter mini-cordage (1.6mm/2.0mm) as well as 3.0mm cable. LC fiber cable connectors are available in cable assembled or one piece connectors. The LC fiber optic assemblies family is Telcordia, ANSI/EIA/TIA and IEC compliant.

Decreased-diameter ferrules

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By mid-1999 the most widely known representative of the pilot high-density connectors was the LC connector (link control) developed by Lucent Technologies in 1997 (and by other sources in 1996). This connector is produced in both single-mode and multimode versions. It uses a ceramic ferrule with a reduced diameter of 1.25 mm and a plastic housing equipped with an external lever-type latch to fit in a coupler (Fig.4.30). The connector is produced in both simplex and duplex options.

According to existing and prospective editions of SCS standards, the optical connector designers guarantee up to 500 cycles of connections and disconnections without deterioration of loss coefficients. This is accomplished by using ceramic ferrules and by the push-pull principle of connecting the plug enables its installation on a buffered fiber (0.9mm) and on fiber patch cords in 2.4-mm loose tubes. The LC plug can be installed in field conditions on 900-mm fiber, but it can only be fabric-bonded on cables in 2.4-mm loose tubes when manufacturing patch cords because of its small dimensions.

The basic characteristics of LC connector are listed in Table.4.13.

lc plug

Another version of this connector is the MU connector by NTT. This product can be considered a compact variant of the SC connector. Similar to the previous version, the MU connector has a housing with an internal latch (based on the push-pull principle). It is approximately half the size of the SC connector due to the decreased diameter of the ferrule and the miniaturization of other components. Both simplex and duplex options of the connector are commercially available.

SC fiber optic patch cable is one of the earliest stype and one of the most commonly used fiber optic cable, it is convenient to use and cost saving, SC fiber optic patch cord is widely uesed in fiber optic networks. SC fiber patch cable is with zirconia sleeve and plastic housing. Now following we recommened you some sc connector patch cords from our store.

This SC to SC fiber patch cord features 62.5/125 micron zip cord construction with two SC connectors on each end. The cable features 1.8 mm total cable width and 62.5 micron multi-mode width which is ideal for most applications including fast data networks, media extension, and other projects that require accurate, high-bandwidth signal transfers.

sc to sc patch cords

The Multimode 50/125 Duplex Fiber Patch Cable is terminated with one LC (male) connector and one SC (male) connector, to provide the necessary connection between fiber networking devices for high-speed, long distance networks.

lc to sc patch cords

Ensuring optimal data transfers and network stability, 50/125-micron cables offer nearly three times the bandwidth of 62.5/125-micron cables, so your data will be transferred at higher rates over longer distances.

We supply fiber optic patch cord , fiber optic patch cable , LC,SC/APC,ST, E2000/APC,MU, VF45,FC, MT-RJ, SC, MPO, Volition,MTP, FC/APC, ST/APC, LC/APC, E2000, DIN, D4, SMA,LSZH,Riser,Plenum,OFNR,OFNP,simplex, duplex,single mode,9/125,SM, multimode,MM, 50/125, 62.5/125.

How To Choose The Multimdoe Fiber For Data Communications

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Multimode fiber systems offer flexible, reliable and cost effective cabling solutions for local area networks (LANs), Storage Area Networks (SANs), central offices and data centers. Multimode fibers support data rates from 10 and 100 Megabits per second (Mb/s) up to today’s 1 Gigabit per second (Gb/s) and 10 Gb/s applications, with standards in development to support data rates up to 40 Gb/s and 100 Gb/s.

Three types of multimode fiber are currently found in premises networks: 62.5μm multimode fiber (OM1), 50μm multimode fiber (OM2), and laser optimized 50μmmultimode fiber (OM3). 50μm and 62.5μm refer to the diameter of the fiber core, which is the area that carries light signals. For the most part, OM1 fiber is found in legacy systems. Over the past five years, network designers have migrated to 50μm fiber,especially laser optimized multimode fibers (OM3), as they can support higher data rates and longer distances. Considering the higher bandwidth advantage, and the applications that most customers will use today or in the future, the Fiber Optics LAN Section recommends that for new installations, customers install OM3 fiber.

While 50μm multimode fiber might seem new, in the 1970s, when optical fiber was introduced, standard 50μm fiber (OM2) was the most popular of the early fiber types available, and was used for both long haul and short reach applications.

After the introduction of single-mode fiber in the 1980s for long haul telephony applications, multimode fibers were applied to short-reach interconnects, such as building and campus backbones needing support over distances from 300 meters to 2000 meters. As with many technology choices, there were trade offs between 50μm multimode and the singlemode fiber systems. The light-emitting diode (LED) sources used for multimode applications had a very large “spot” and the 50μm fiber did not fully couple the available power into the 50μm core. Consequently, 50μm fiber used with 850 nm wavelength LEDs was limited in distance. Receivers were not always able to detect an adequate light power at the distant end of the backbone. Still, network designers were reluctant to install single mode fibers as the power sources remained more expensive and there was no need in most premises applications for the long link lengths the more expensive singlemode facilities would provide.

62.5μm multimode fiber (OM1) was introduced in 1985 to solve these two problems. Because more light from LEDs could be coupled into its larger core, OM1 fiber could support 2 km campuses at 10 Mb/s. At the same time, its higher numerical aperture, which can be thought of as the fiber’s “light gathering” ability, made it easier to cable. Through much of the 1980’s and 90’s one multimode fiber, 62.5μm core FDDIfiber became a defacto standard among the vast majority of LAN installations. Despite continual upgrades in LAN bandwidth requirements, FDDI grade fiber remained a work horse for backbone fiber installations for many years, and is still present in legacy systems. Now we recommend you one type of multimode fiber patch cable from fiberstore.

Multimode fiber patch cables can be used as cross)connect jumpers, equipment and work area cords. All Signamax optical fiber patch cords are manufactured using riser) grade (OFNR) cable and are 100% factory tested for insertion and return loss to ensure transmission per formance perANSI/TIA)568)C.3 standard specifications.Patch cords terminated with ST,SC, LC and MT)RJ connectors (uniform and hybrid versions) are available in duplex and simplex designs. Our store have SC fiber optic cable, ST to ST fiber cable, ect.

Fiberstore produces high quality Fiber Optic Patch Cable using a variety of commercially available connectors and fibers. These patchcords offer low insertion losses, and excellent repeatability. Patchcords can be manufactured to any specified length. An array of cable materials are available, including unjacketed fiber, 0.9 mm outside diameter (O.D) loose tube buffer, 3 mm O.D kevlar rein-forced PVC jacketing, 3 mm armored cabling, and 5 mm heavy duty armored cabling as well as 3 mm or 5 mm Stainless Steel armored cablings.

Fiberstore LC And SC Fiber Optic Patch Cord

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The LC connectors used are small form-factor fiber optic connectors resembling miniature SC connectors with high quality 1.25mm zirconia ferrules and push-pull latching mechanism. They are fully compatible with existing LC hardware.

fiber patch cord

In addition to basic testing, some mechanical and environmental tests per IEC or Telcordia are also performed periodically to guarantee the best quality. For standard Fiber Optic Patch Cord, sampling check is performed on ferrule geometry to ensure high percentage of polished connectors meeting GR-326 requirements. For premium grade, ferrule geometry is tested on all patch cords to meet these GR-326 requirements. The following is LC to LC fiber patch cable, LC-LC fiber optic patch cables are used to send high-speed data transmissions throughout your network. LC/LC fiber optic cables connect two components with fiber optic connectors. A light signal is transmitted so there is no outside electrical interference.

lc to lc fiber patch cord

Other than standard single mode and multimode fibers, G655, OM2, and OM3 fibers are also available upon request. Flame retardant grade cable sheathing options are offered. Riser rated cable will be provided as standard. LSZH and Plenum can be provided upon request.

The SC connectors used for our patch cords are designed to NTT-SC* standards and are fully compatible with existing SC hardware. Two simplex connectors can be configured into a duplex format by adding a duplex clip.

In addition to basic testing, some mechanical and environmental tests per IEC or Telcordia are also performed periodically to guarantee the best quality. For standard patch cords, sampling check is performed on ferrule geometry to ensure high percentage of polished connectors meeting GR-326 requirements. For premium grade, ferrule geometry is tested on all patch cords to meet these GR-326 requirements. The following is SC to SC fiber patch cable, SC to SC Fiber Optic jumper cords are primarily used in high bandwidth networks where you must send large amounts of data at high speeds. Use a SC to SC fiber jumper cable to connect two devices with SC connections. Since the data is sent via a light signal, there is no electrical interference. Multimode SC/SC fiber cables are used to send multiple light signals at a time throughout gigabit networks. They are usually used in shorter cable runs, and have inner core diameter of 62.5 micron. The 62.5um cables support distances to 275 meters.

sc to sc fiber patch cord

Other than standard single mode and multimode fibers, G655, OM2, and OM3 fibers are also available upon request. Flame retardant grade cable sheathing options are offered. Riser rated cable will be provided as standard. LSZH and Plenum can be provided upon request.

Fiberstore offers the most complete selection and great quality fiber optic patch cables! We carry singlemode and multimode optical fiber patch cables with a variety of connector types such as LC, SC, ST, and MTRJ. Duplex fiber cables consist of two fiber cores and can be either multimode or singlemode.

Some Basic Knowledge of Plastic Fiber Cables

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Plastic fiber cables have the highest attenuation over short distances, but thet come at the lowest cost. A plastic fiber optic cable has a plastic core and plastic cladding. It is also quite thick, with typical core/cladding diameters of 480/500, 735/750, and 980/1000 u. The core generally consists of polymethylmethacrylate (PMMA) coated with a fluropolymer. Plastic fiber optic cables are used in small optical devices, lighting applciations, automobiles, music systems, and other electronic systems. The cables are also used in communication systems where high bandwidth or low loss are not a concern. The increased interest in plastic optic fiber is due to two reasons: (1) the higher attenuation relative to glass, which may not be a serious obstacle with the short cable runs often required in premise networks; and (2) the cost advantage, which appeals to network architects faced with budget decisions. Plastic Optical Fiber Cable do, however, have a problem with flammability. Because of this, they are run through a plenum. Otherwise, plastic fiber is considered extremely rugged, with a tight bend radius and the ability to withstand mechanical stress.

Plastic clad silica (PCS) fiber optic cable has an attenuation-and cost-that lie between those of glass and plastic. Plastic clad silica (PCS) has a glass core that is often made of vitreous silica; the cladding is often plastic, ususally a silicone elastomer with a lower refractive index. In 1984, the International Electrotechnical Commission (IEC）standardized PCS fiber optic cable to have the following dimensions: a core of 200 u, a silicone elastomer cladding 380 of microns, and a jacket of 600 u.

Plastic fiber cables are fabricated using the same principles as glass fiber cables. A core with a higher index of refraction is surrounded by a cladding with a lower index of refraction. The cladding is then coated with a coloured jacket for coding purpsoes; glass and plastic cables are similary colour coded. POF cables are available in single- and multi-step index, as well as graded index.

Recent developments in the polymer industry have led to improvements in plastic fiber optic cables, Plastic fiber cables will envetually replace glass fiber cables because of their many advantages, including their ease in connection using epoxy as well as their lower price, durability, lower weight, and smaller bending radii.

FS.COM is a leading supplier of advanced fiber optic components. Our extensive product offering includes a full range of solutions including Connectors and Adapters, Assemblies, Backplanes, Optical Circuitry, Termination Kits and Tooling. FS’s experience and resources provide customers a wide range of design, manufacturing and value-added services.

Custom Fiber Optic Swich Systems

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The custom fiber optic system is conceived as a collection of building blocks which can be chosen by the costumer to fulfill his needs. The heart of the systems are the MEMS Optical Switch, varialbe optical attenuators, couplers, splitters together with kilometers of fiber divided into sections. All integrated in the same instrument to achieve costumer’s needs concerning measurements, simulations and testing.

The inputs are basically the fiber optical inputs and the control inputs. For the moment a serial input (RS232) and an USB control are available. The outputs available for measurement are the optical fibers themselves toghether with outputs to measure the energy, s/n ration, and BERT.

Applications

Some of the applications for Custom Fiber Optic System are the following:

Real Network Simulation: This system allows to simulate real network conditions by switching reels of fiber into the optical path. Due to its flexibility and its configurable character, it can simulate different network configurations scenarios in order to study the behavior in each case.

Improve Optical Testing and Measurements: Thanks to the electronic control of the optical parts, the user can choose easily which components are active simply by sending the required information to the serial/USB port.

Automatic Testing: The user can build his own solution integrating system together with a computer, other measurement instruments and a bus.

fiber optic swiches

Fiberstore optical switch uses a moving prism between fixed collimator pairs, which allows bi-directional operation independent of data rate and signal format. 9/125 and 62.5/125 µm, 1 m long, jacketed fiber pigtails are available on all models. In addition, optional ST, FC and SC fiber connector termination options can be added. We supply optical switches based on Opto-mechanical Switch, MEMS, Solid-State technology with proven reliability and the configurations are available as 1 x 1, 1 x 2, 2 x 2, etc.. Moreover, we offer non-latching, latching, single-mode and multimode versions. Our optical switches are all with high quality and ready for the FTTx applications.