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Simplex And Duplex Fiber Optic Cables

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It is important to understand the different varieties of core characteristics that are available within the fiber optic cabling itself, as each of these different characteristics will have different effects on your ability to transmit information reliably. Have a look at the most common fiber optics cores used in the industry nowadays.
Simplex Fiber Optic Cables
Simplex means this cable is with only one thread of fiber optic glass inside the single core. And simplex cables are with one single outer jacket. Simplex fiber optic cable is used in applications that only require one-way data transfer. For instance, an interstate trucking scale that sends the weight of the truck to a monitoring station or an oil line monitor that sends data about oil flow to a central location. There are singlemode and simplex multimode fiber optic cable available. Single-mode simplex fiber optic cable is a great option for anyone setting up a cable network that will require data to travel in one direction over long distances. Since this type of cable only carries one ray of light at a time, it’s better for long-distance transmissions. Single-mode fiber itself has a high-carrying capacity, is very reliable, and has lower power consumption than other options.
Analog to digital data readouts, interstate highway sensor relays, and automated speed and boundary sensors (for sports applications) are all great uses of Simplex fiber optic cable. This form of fiber cable can be cheaper than Duplex cables, because less material is involved. Simplex cable is compatible with any HDMI extender.
Duplex Fiber Optic Cables
Duplex fiber cable can be regarded as two simplex cables, either single mode or multimode, having their jackets conjoined by a strip of jacket material, usually in a zipcord (side-by-side) style. Use duplex multimode or singlemode fiber optic cable for applications that require simultaneous, bi-directional data transfer(One fiber transmits data one direction; the other fiber transmits data in the opposite direction). Duplex fiber is available in singlemode and multimode.
Simplex OM1 62.5/125 Multimode Fiber Optic Patch Cable
Duplex multimode fiber optic cable and Singlemode duplex cable alike are used for two-way data transfers. Larger workstations, switches, servers, and major networking hardware tends to require duplex fiber optic cable. Duplex cables can be more expensive than Simplex cables, and are compatible with any HDMI extender.
Simplex and duplex are with various cable structure types; they are different from single mode and multi mode which are related to fiber optic glass types.
Multi Fiber Cables
Both multi fiber cables and simplex cables are with a single outer jacket, but simplex only has one thread fiber glass inside the core, while multi fiber has many threads of fiber optic glass inside the core. For example, an 8-core multi fiber cable. There are ribbon type and bundle type multi fiber cables.
Single-mode fiber cables and multi-mode fiber cables are similar in many ways, with the main difference being that the glass center of single-mode cables is significantly smaller, at about 10 microns in diameter. The smaller size is what allows these cables to transmit data up to 40 miles with a bandwidth of 1Gbs.
Only need a simplex fiber cable if data will be traveling in one direction, such as with a security camera or truck weigh station. And if your data will be traveling a long distance – for instance between buildings or from one station to another – then you’re better off with a single-mode fiber cable.

10 Gigabit Transceivers And Cables

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In computer networks, 10 Gigabit Ethernet refers to various technologies for transmitting Ethernet frames at a rate of 10 gigabits per second (10×109 or 10 billion bits per second), first defined by the IEEE 802.3ae-2002 standard. 10-Gigabit Connections For 10-Gigabit Ethernet cabling the fiber options are very similar. The transceivers are somewhat different, as is some nomenclature. New possibilities have evolved for copper connections.
Transceivers
Standards bodies initially offered several options for the 10-Gigabit transceiver. 10G transceivers series include QSFP+ Transceiver, XFP Transceiver, SFP+ Transceiver, 10G XENPAK Transceiver and X2 Transceiver. The one that ultimately evolved as most popular in commercial data center usage was the SFP+ transceiver. The Cisco 10GBASE SFP+ modules offer customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications.
Cisco SFP-10G-SR
The Cisco 10GBASE-SR Module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). It is 10GBase SR compliant and work at 850nm, this transceiver is in standards SFP+ package to plug into the ports or slots on Cisco equipment, optical interface is duplex LC connector. Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible.
Cisco SFP-10G-SR-X
The Cisco SFP-10G-SR-X is a 10GBASE-SR module for extended operating temperature range. It supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible.
Cisco SFP-10G-LRM
The Cisco 10GBASE-LRM Module supports link lengths of 220m on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met over FDDI-grade, OM1 and OM2 fibers, the transmitter should be coupled through a mode conditioning patch cord. No mode conditioning patch cord is required for applications over OM3 or OM4. The Cisco 10GBASE-LRM Module also supports link lengths of 300m on standard single-mode fiber (SMF, G.652).
Cisco FET-10G
The Cisco FET-10G Fabric Extender Transceiver support link lengths up to 100m on laser-optimized OM3 or OM4 multimode fiber. It is supported on fabric links only from a Nexus 2000 to a Cisco parent switch.
Cisco SFP-10G-LR
The Cisco 10GBASE-LR Module is single mode, supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652).
Duplex OS1 9/125 Singlemode Fiber Optic Patch Cable
Cisco SFP-10G-LR-X
The Cisco SFP-10G-LR-X is a multirate 10GBASE-LR, 10GBASE-LW and OTU2/OTU2e module for extended operating temperature range. It supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652).
Cisco SFP-10G-ER
The Cisco 10GBASE-ER Module supports a link length of up to 40 kilometers on standard single-mode fiber (SMF, G.652).
Cisco SFP-10G-ZR
The Cisco SFP-10G-ZR is a multirate 10GBASE-ZR, 10GBASE-ZW and OTU2/OTU2e module. It supports link lengths of up to about 80 kilometers on standard single-mode fiber (SMF, G.652). This interface is not specified as part of the 10 Gigabit Ethernet standard and is instead built according to Cisco specifications.
10GbE supports both copper and fiber cabling. However, due to its higher bandwidth requirements, higher-grade copper cables are required: category 6A or Class F/cat7 ethernet cable for links up to 100m. Unlike previous Ethernet standards, 10 gigabit Ethernet defines only full duplex point-to-point links which are generally connected by network switches. Half duplex operation and hubs do not exist in 10GbE.

Common Armored Fiber Optic Cables

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Armored fiber optic cables are often installed in a network for added mechanical protection, as they have extra reinforcing in the cable housing to prevent damage. Two types of armored fiber optic cables exist: interlocking and corrugated. Interlocking armor is an aluminum armor that is helically wrapped around the cable and found in indoor and indoor/outdoor cables. It offers ruggedness and superior crush resistance. Corrugated armor is a coated steel tape folded around the cable longitudinally. It is found in outdoor cables and offers extra mechanical and rodent protection.
The Structure Of An Armored Fiber Optic Cable
In basic armored fiber cable designs, the outer sleeve provides protection against wind, solvents, and abrasion. This outer sleeve is usually made of plastic such as polyethylene. The next layer between the sleeve and the inner jacket is an armoring layer of materials that are difficult to cut, chew, or burn, such as steel tape and aluminum foil. This armoring material also prevent the fiber from being stretched during cable installation. Ripcords are usually provided directly under the armoring and the inner sleeve to aid in stripping the layer for splicing the cable to connectors or terminators. The inner jacket is a protective and flame retardant material to support the inner fiber cable bundle. The inner fiber cable bundle includes strength members, fillers and other structures to support the fibers inside. There are usually a central strength member to support the whole fiber cable.
There are several potential jacket materials are considered for armored indoor outdoor cable. The choice of jacket material depends on the required level of flame retardance in the final cable, including Polyvinyl Chloride (PVC) jacket, Halogen Free Polyolefins (HFPO) and Coated Steel Armor. Armored cable is also available with a double-armor protective jacket for added protection in harsh environments. The steel armor should always be properly grounded to an earth ground at all termination points, splice locations and all building entrances.
Benefits Of Installing Armored Cable
During some fiber optic installations, there is a need to provide extra protection for the cable due to the installation environment. That environment may be underground or in buildings with congested pathways. Installing an armored fiber-optic cable in these scenarios would provide extra protection for the optical fiber and added reliability for the network, lessening the risk of downtime and cable damage due to rodents, construction work, weight of other cables and other factors.
But one inconvenience is the need to bond and ground the cable. This inconvenience can be eliminated by using a dielectric-armored cable. Dielectric-armored cable options exist that offer the required protection without the hassle of grounding and bonding the armor, or the extra steps of installing a conduit and cable when the cable is without any armored protection.
Compared With Other Common Fiber Optic Cables
These armored fiber optic cables are the same diameter with commonly seen 2mm O.D or 3mm O.D cables, and their optical performance is also same as the common fiber optic cables. The difference is armored fiber cables are with stainless steel armor inside the cable jacket and outside the optical fiber, this stainless steel armour are strong enough to make the cables anti-rodent and the whole cable can resist the steps by an adult people.
Armored fiber optic patch cables are also can be single mode and multimode types, the connectors optional including commonly used LC, SC, ST, FC, E2000, MU, SMA, etc. Cable structure can be simplex, duplex or multi-fiber types. Armored fiber cables from fiber-mart.com can be with custom made colors and cable length, they are manufactured according to industrial and international standards.

The LSZH Cables, Ribbon Cables And Indoor Outdoor Cables

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With the creation of modern technology, many new networks will choose to use bulk fiber cable instead of traditional copper based cables to increase the capability and speed of the network.Many different types of fiber optic cables in our life. They are generally used in different places. Under different conditions to select the appropriate cable.From fiber-mart.com, they inculding the Indoor Cables, Outdoor Cables, FTTH Cables, Armored Cables, LSZH Cables and some special cables. They are various at Aerial Cables, Building Cables, Direct buried cables, Duct Cables, Underwater/Submarine Cable. Some of our optical fiber comes with steel tube and steel wire armoring, suitable for sea, lake and river applications. Customers have the flexibility to choose a cable plant to best fit their needs. Only optical fiber that meets or exceeds industry standards is used to ensure quality products with best-in-class performance.So many cable in it, but do you know which cable you need.Tell you some info about LSZH fiber cable,Ribbon fiber cable,Indoor Outdoor Cable.I think it can help you choose the nice cable.
What is Low Smoke Zero Halogen (LSZH) ?
Low Smoke Zero Halogen (LSZH) is a type if cable jacketing made of polypropylene that gives off limited smoke and no halogens when come across fire or strong heat. LSZH cable jacketing consists of thermoplastic or thermoset compounds that produce limited smoke and no halogen when come across high sources of heat, e. grams. flare.Low Smoke Zero Halogen cable can be called LSF (low smoke and fume), LSHF (low smoke halogen free), and LS0H (low smoke zero halogen).
Why to used the LSZH Cables ?
Low smoke zero halogen cable reduces the amount of toxic and corrosive gas emitted during combustion. This type of material is typically used in badly ventilated areas such as planes or railroad cars. Low smoke zero halogen is becoming very popular and, in some cases, a requirement where the protection of men and women and equipment from toxic and corrosive gas is very important.
They don’t produce a dangerous gas/acid combination in case of fire. LSZH patch cords are for utilization in patching environments with poor air circulation where personnel and equipment may be exposed to corrosive fumes and toxins during combustion. The cable jacket for these wires is designed to minimize the release of halogen fumes and toxicants into the air, reducing the potential of hazardous contact in occupied spaces. LSZH cables are mainly used in The european countries.
What is Ribbon Fiber Cable ?
Ribbon Fiber Cable is preferred where high fiber counts and small diameter cables are needed. This cable has the highest packing density, since all the fibers are laid out in rows in ribbons, typically of 12 fibers, and the ribbons are laid on top of each other. Not only is this the smallest cable for the most number of fibers, it’s usually the lowest cost. Typically 144 fibers in ribbons only has a cross section of about 1/4 inch or 6 mm and the jacket is only 13 mm or 1/2 inch diameter! Some cable designs use a “slotted core” with up to 6 of these 144 fiber ribbon assemblies for 864 fibers in one cable! Since it’s outside plant cable, it’s gel-filled for water blocking or dry water-blocked. These cables are common in LAN backbones and data centers.
Where can used the Ribbon Cables?
Ribbon cables are usually seen for internal peripherals in computers, such as hard drives, CD drives and floppy drives. On some older computer systems (such as the BBC Micro and Apple II series) they were used for external connections as well. Unfortunately the ribbon-like shape interferes with computer cooling by disrupting airflow within the case and also makes the cables awkward to handle, especially when there are a lot of them; round cables have almost entirely replaced ribbon cables for external connections and are increasingly being used internally as well.
What is Indoor Outdoor Fiber Optic Cable?
Indoor Outdoor Fiber Optic Cable is designed to meet both the stringent environmental requirements typical of outside plant cable AND the flammability requirements of premise applications. Ideal for applications that span indoor and outdoor environments. By eliminating the need for outside to inside cross-connection, the entire system reliability is improved and with lower overall installation costs.
Ideal for applications that span indoor and outdoor environments, Indoor/outdoor cable can eliminate the need for building entryway splice points, saving both time and money. Outdoor/Indoor cables combine the flame resistance and safety features of an indoor riser or plenum cable with the durability that is critical for OSP use. The result is a unique, dual-purpose cable that can save time and money by allowing OSP applications to flow seamlessly indoors, using a single cable and no splices.

Fiber Optic Cable are usually used in two scenarios

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Fiber Optic Cable are used in applications where the optical signal is too strong and needs to be reduced. For example, in a multi-wavelength fiber optic system, you need to equalize the optical channel strength so that all the channels have similar power levels. This means to reduce stronger channels’ powers to match lower power channels.
The attenuation level is fixed at 5 dB, which means it reduces the optical power by 5dB. This attenuator has a short piece of fiber with metal ion doping that provides the specified attenuation.
There are many different mechanisms to reduce the optical power, this picture shows another mechanism used in one type of variable attenuator. Here variable means the attenuation level can be adjusted, for example, it could be from 1 dB up to 20dB.
Fiber Optic Cable are usually used in two scenarios.
The first case is in fiber optic power level testing. Cable are used to temporarily add a calibrated amount of signal loss in order to test the power level margins in a fiber optic communication system.
In the second case, Cable are permanently installed in a fiber optic communication link to properly match transmitter and receiver optical signal levels.
Optical Cable are typically classified as fixed or variable Cable.
Fixed Cable have a fixed optical power reduction number, such as 1dB, 5dB, 10dB, etc.
Variable Cable’ attenuation level can be adjusted, such as from 0.5 dB to 20dB, or even 50dB. Some variable Cable have very fine resolution, such as 0.1dB, or even 0.01dB.
This slide shows many different optical attenuator designs.
The female to female fixed Cable work like a regular adapter. But instead of minimizing insertion loss, it purposely adds some attenuation.
The female to female variable Cable are adjustable by turning a nut in the middle. The nut adjusts the air gap in the middle to achieve different attenuation levels.
The male to female fixed Cable work as fiber connectors, you can just plug in your existing fiber connector to its female side.
The in-line patch cable type variable Cable work as regular patch cables, but your can adjust its attenuation level by turning the screw.
For precise testing purposes, engineers have also designed instrument type variable Cable. These instrument type Cable have high attenuation ranges, such as from 0.5 dB to 70dB. They also have very fine resolution, such as 0.01dB. This is critical for accurate testing.

Common Types Of Fiber Optic Cables And Patch Cables

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1.FTTH Fiber Optic Cable

FTTH (Fiber To The Home), as its name suggests it is a fiber optic directly to the home. Specifically, FTTH refers to the optical network unit (ONU) mounted on home users or business users, is the optical access network application type of closest to users in optical access series except FTTD(fiber to the desktop).

There are 5 main advantages of FTTH:

First, it is a passive network, from the end to the user, the intermediate can be basically passive;

Second, the bandwidth is relatively wide, long distance fits the massive use of operators;

Third, because it is carried business in the fiber, and there is no problem;

Fourth, because of its relatively wide bandwidth, supported protocol is more flexible;

Fifth, with the development of technology, including point-to-point, 1.25G and FTTH have established relatively perfect function

2. Indoor Fiber Optic Cable

Indoor optical cable is classified according to the using environment, as opposed to outdoor fiber optic cable.

Indoor optical cable is a cable composed of fiber optic (optical transmission medium) after a certain process. Mainly by the optical fiber (glass fiber is as thin as hair),plastic protective tube and plastic sheath. There is no gold, silver, copper and aluminum and other metal, fiber optic cable generally has no recycling value.

Indoor fiber optic cable is a certain amount of fiber optic forming to cable core according to a certain way, outsourcing jacket, and some also coated layer of protection, to achieve a communication line of light signal transmission.

Indoor cable is small tensile strength, poor protective layer, but also more convenient and cheaper. Indoor cable mainly used in building wiring, and connections between network devices.

3. Outdoor Fiber Optic Cable

Outdoor fiber optic cable, used for outdoor environment, the opposite of indoor cable.

Outdoor cable is a type of communication line to achieve light signal transmission, is composed of a certain amount of fiber optic forming to cable core according to a certain way, outsourcing jacket, and some also coated with outer protective layer.

 

Outdoor cable is mainly consists of optical fiber (glass fiber is as thin as hair), plastic protection tube and plastic sheath. There is no gold, silver, copper and aluminum and other metal cable, generally no recycling value.

Outdoor cable is greater tensile strength, thick protective layer, and usually armored(wrapped in metal). Outdoor cables are mainly applied to buildings, and remote networks interconnection.

4.Fiber Optic Patch Cable

Fiber optic patch cable, also known as fiber jumper, used to connect from the device to fiber optic cabling link. Fiber jumper has a thick protective layer, generally used in the connection between the fiber converter and Fiber Termination Box. Commonly used fiber jumpers include: ST, LC, FC and SC.

Main Categories

Single-mode fiber patch cable: General single-mode fiber jumper is colored in yellow, connector and protective sleeve are blue; long transmission distance.

Multi-mode fiber patch cable: General multimode fiber jumper is colored in orange and some in gray, connector and protective sleeve are beige or black and the transmission distance is short.