Understanding Singlemode and Multimode Fiber Optic Cables

Fiber optic cables are generally divided into two types: single mode and multi-mode. Understanding characteristics of each fiber types help understand the applications for which they are used. Earlier in 1970, fiber optic cables are researched to have the capabilities of carrying 65,000 times more information then just regular copper wire, through with information carried by a pattern of light waves that could be detected at a distance of even 1000 miles away.

Real life uses of fiber optics
There are two basic types of fiber optic cables: multi-mode and single mode fiber. Multimode fiber is best designed for short transmission distances, and is suitable for use in LAN systems and video surveillance. Single-mode fiber is best designed for longer transmission distances, making it suitable for long-distance telephony and multichannel television broadcast systems. Fiber optics is very important in communications, because it can be used to transmit information very efficiently. Fiber optics also have visual users. Fiber optics is used in medicine to look inside the body. By using optical fiber cables, doctors can examine organs and diagnose illness without surgury or X-rays. Optical fibers can also deliver laser light to specific points in side the body to help surgons with delicate surgery. A local radia station uses fiber optical cables instead of FM waves.

Multimode and Singlemode Fiber
Multimode fiber is the first to be manufactured and commercialized, simply refers to the fact that numerous modes or light rays are carried simultaneously through the waveguide. Modes result from the fact that light will only propagate in the fiber core at discrete angle within the cone of acceptance. This fiber type has a much large core diameter, compared to single-mode fiber, allowing for the larger number of modes, and multimode fiber is easier to couple than single-mode optical fiber. Multimode fiber may be categorized as step-index or graded-index fiber. Multimode Step-index Fiber core’s index of refraction is higher than the cladding’s index of refraction, the light that enters at less than the critical angle is guided along the fiber. Multimode graded-index fiber core’s refractive index is parabolic, being higher at the center. They follow a serpentine path being gradually bent back toward the center by the continuously declining refractive index.

Single-mode fiber allows for a higher capacity to transmit information because it can retain the fidelity of each light pulse over longer distances, and it exhibits no dispersion caused by multiple modes. Single-mode fiber also enjoys lower fiber attenuation than multimode fiber. Thus, more information can be transmitted per unit of time. Like multimode fiber, early single-mode fiber was generally characterized as step-index fiber meaning the refractive index of the fiber core is a step above that of the cladding rather than graduated as it is in graded-index fiber. Modern single-mode fibers have evolved into more complex designs such as matched clad, depressed clad and other exotic structures.

A interesting fact is that an optical fiber cable is less than 1/2 inch in diameter, which could carry more than 40,000 telephone conversations at once. Today more than 80% of the worlds long-distance traffic is carried over optical fiber cables.Additional important variety of multimode and single mode fiber includes polarization-maintaining, Low smoke zero halogen, armored fiber.

This article is source from fibre optic cable manufacturers.

FiberStore Introduced the New 10G OM3 Indoor Outdoor Plenum Distribution Cables

FiberStore introduces the new 10G OM3 Indoor/Outdoor plenum distribution cables, which are ideal for networking in ducts, risers, and air handing spaces where small size, lightweight, and versatile installation capacity are required.

FiberStore has updated its line of OM3 OM4 10G fiber cables with the new OM3 Indoor/Outdoor Plenum distribution cables. The new simplex to 24 strand multimode 50/125 10G OM3 indoor/outdoor plenum distribution cables supports installation where small size, lightweight, and versatile installation capability are required for ducts, risers, and air handing spaces.

This distribution plenum rate fiber optic cable is composed of 2 to 24 colored tight buffers, plus the high specific strength-to-weight radio and compact cable design for limited conduit space and tight bends in long cable pulls, allowing designers, installers and operators of enterprise networks to use multimode optical fiber in a package that is easier to handle and install.

Based on 900 μm tight buffered designs, FiberStore’s Indoor/Outdoor Plenum cable eliminates the need for costly and time-consuming installation of fanout kits or pigtail splices since the connectors terminate directly to the fiber. The outer jacket is moisture, fungus and UV-resistant, making FiberStore Indoor/Outdoor Plenum Distribution Cable reliable for both outdoor and underground buried-duct applications.

“With a strong focus on engineering and design, FiberStore continually works on improving our solutions by listening to our customer base. The new design of the indoor/outdoor plenum-rated cable was a direct result of customer feedback in order to meet the need for networking in areas with limited space or tight bends. ” explained Thomas Cole, commercial manager for enterpriser cables at FiberStore. “Our updated family of Indoor/Outdoor plenum-rated cables provides a sound building block for those networks.”

The new Indoor/Outdoor Plenum distribution cable is suitable for spaces requiring plenum, riser, general purpose and outside plant UL flame ratings. Available in single-mode and multimode, including laser-optimized 50 μm OM3, cables within the family are also available with options up to 24 fibers and customized fiber or sheath colors, sheath material and cables length.

About FiberStore
FiberStore is one of the industry fast growing fiber optic cable suppliers offering industrial-leading products and services to electric utility, broadband, communications, OEM, enterprise, wireless and transit rail markets as well as the emerging markets of oil and gas, mining, nuclear, avionics, medical, renewable and intelligent grid. The company’s diverse products portfolio includes fiber optic cable, transmission and substation accessories, outside plant equipment, connectors, fusion splicer, test equipment and training. Since its establishment in 2001, FiberStore is proud to offer engineering expertise, exceptional products and reliable service that help customers improve their critical and electrical infrastructure. For more information, visit www.fiberstore.com

Some Info About Fiber Optic Multiplexer Technology

In the long-distance optical fiber transmission,the fiber cables have a small effect on the optical signal transmission,the transmission quality of optical fiber transmission system mainly depends on the optical multiplexers’ quality,because optical multiplexer is responsible for electrical/optical and optical/electric conversion and optical transmitting and receiving. Optical fiber multiplexer as terminal equipment of transmission optical signal, usually used in pairs, divided into optical receiver and optical transmitter, optical transmitter is used to convert electrical signals into optical signals to realize electrical/optical conversion, and the optical signal input optical fiber transmission.Optical receiver is used to restore a in the optical fiber for optical signal into electrical signal to realize optical/electric conversion. It’s fit and unfit quality directly affects the whole system, so you need to know something about the performance and application of the fiber optic multiplexers, it can help you better configuration and procurement.

What is video multiplexer?

Fiber optic video multiplexer is used to transform video signals to fiber optic signals, it is analog fiber optic video multiplexer and digital video multiplexer, the digital one is more and more used and it is the popular model in current market. This product is generally used in security applications to control and monitor the video camera signals.

Fiber Optic Multiplexer Technology:

Fiber optic multiplexer technology serves single-mode and multimode optical fibers with multichannel rack mount or standalone units. Multiplexers aren’t only for connecting multiple devices across a network. Multiplexers are also commonly used to distribute data from a SONET core, allowing for the distribution of DS-1, DS-3, and other circuit mode communications to several devices throughout a network. Again, this allows for multiple devices to share an expensive resource.

Used by cellular carriers, Internet service providers, public utilities, and businesses, fiber optic multiplexer technology extends the reach and power of telecommunications technologies. Network management systems allow for system service and maintenance, and provide for security, fault management, and system configuration. With advantages like lower costs and longer life expectancies, current fiber-optical networks are aided by improvements in multiplexing technology, and may provide light speed data transmission well into the future. Multiplexed systems also simplify system upgrades since numbers of channels and channel bandwidth is a function of the electronics rather than the transmission line or components.

Feature Of Optical Multipexer:

Fiberstore fiber optic video multiplexer adopt the international advanced digital video and optical fiber transmission technology, these fiber optic multiplexers are various models and can be custom made according to customers’ requirement. Our products can transmit from 1 channel video signal to max 64 channel video signals in different optional distances. They can be with optional audio channel and reverse data channel. Interfaces can be RS232, RS422 or RS485. Fiber optic ports are typical FC, with SC or ST optional. The fiber optic video multiplexers are single mode types and multimode types, used with different kinds of optical fiber lines.We provide some types of optical multiplexers, including video multiplexers,video & data multiplexers,video & audio multiplexers, video & data & audio multiplexers, PDH multiplexer, and we supply optical multiplexer in different channels,such as 1, 2, 4, 8, 16, 24, 32 channels.

Custom Service:

We supply stand alone type fiber optic video multiplexers and chassis type fiber optic video multiplexers,we also have custom service, many types of fiber optic products could custom in our company, all these products are with flexible design according to customer requirement, they are good prices and fast delivery. If you have parameters in the request for your fiber optic products, I think we can offer you all you need.

Understanding Fiber Optic Based Light Source

Each piece of active electronics will have a variety of light sources used to transmit over the various types of fiber. The distance and bandwidth will vary with light source and quality of fiber. In most networks, fiber is used for uplink/backbone operations and connecting various buildings together on a campus. The speed and distance are a function of the core, modal bandwidth, grade of fiber and the light source, all discussed previously. Light sources of the fiber light source are offered in a variety of types. Basically there are two types of semiconductor light sources available for fiber optic communication – The LED sources and the laser sources.

Using single mode fiber for short distances can cause the receiver to be overwhelmed and an inline attenuator may be needed to introduce attenuation into the channel. With Gigabit to the desktop becoming commonplace, 10Gb/s backbones have also become more common. The SR interfaces are also becoming common in data center applications and even some desktop applications. As you can see, the higher quality fiber (or laser optimized fiber) provides for greater flexibility for a fiber plant installation. Although some variations ( 10GBase-LRM SFP+ and 10GBASE-LX4) support older grades of fiber to distances 220m or greater, the equipment is more costly. In many cases, it is less expensive to upgrade fiber than to purchase the more costly components that also carry increased maintenance costs over time.

Light sources of the fiber light source are offered in a variety of types. Basically there are two types of semiconductor light sources available for fiber optic communication – The LED sources and the laser sources.

In fiber-optics-based solution design, a bright light source such as a laser sends light through an optical fiber, called laser light source . Along the length of the fiber is an ultraviolet-light-treated region called a “fiber grating.” The grating deflects the light so that it exits perpendicularly to the length of the fiber as a long, expanding rectangle of light. This optical rectangle is then collimated by a cylindrical lens, such that the rectangle illuminates objects of interest at various distances from the source. The bright rectangle allows line scan cameras to sort products at higher speeds with improved accuracy.

The laser fiber-based light source combines all the ideal features necessary for accurate and efficient scanning: uniform, intense illumination over a rectangular region; a directional beam that avoids wasting unused light by only illuminating the rectangle; and a “cool” source that does not heat up the objects to be imaged. Currently employed light sources such as tungsten halogen lamps or arrays of light-emitting diodes lack at least one of these features.

DWDM SFP Transceiver From FiberStore

Dense Wavelength Division Multiplexing (DWDM) Small Form-Factor Pluggable (SFP) transceivers provide the high speeds DWDM SFP transceiver and physical compactness that today’s networks require while delivering the deployment flexibility and inventory control that network administrators demand. Usually DWDM SFP modules applied in SDH/SONET. DWDM SFP modules provided by FiberStore are available in all 100 GHz or 50GHz C-band wavelengths on the DWDM ITU grid.

For SFP Module at fiberstore.com, you can choose one from more than 500 items, you can narrow by from Compatible SFP(such as Cisco SFP, HP SFP, Juniper SFP, Dell SFP, Netgear SFP, Extreme SFP, Force10 SFP, Brocade SFP, etc.), Transfer Distance(0-100m, 100m-800m, 1km-5km, 5km-20km, 20km-40km, 40km-80km, 80km-120km, above 120km), Wavelength(Multi-mode 850nm, Single Mode 1310nm, Single Mode 1550nm, BIDI 1310/1490/1550, Multi-mode 1310nm) and Fiber System(Simplex, Duplex). There always has one DWDM SFP optical module just meet your demand. There are also DWDM SFP+ transceiver available. As you know, SFP+ transceiver is an enhanced transceiver upgraded from SFP, smaller but higher performance.

DWDM SFP+ transceiver is actually created specifically with regard to service providers as well as big businesses that need the scalable, versatile, cost-effective program with regard to multiplexing, moving as well as safeguarding high-speed data, storage space, tone of voice as well as movie programs within point-to-point, add/drop, diamond ring, nylon uppers as well as celebrity system topologies. DWDM allows providers to support numerous countless aggregated providers associated with any kind of sub-rate protocol without having setting up additional dark fiber.

CWDM SFP+ transceiver enables 10G through existing CWDM filters, without the need for a hybrid DWDM design, while our DWDM SFP+ transceiver allows the use of fiber-conserving WDM solutions in standard switches and routers, eliminating the need for a separate optical transport device. These new SFP+ pluggable transceivers serve as direct replacements for OEM optics, allowing you to save time and money.

FiberStore’s DWDM SFP+ compliment with MSA. Operating influx through 1563.86nm in order to 1528.77nm. Achieve range through 40km to 80km. Assistance software within 10G Ethernet. Rely on TOSA/ROSA leadtime, provide period might be transformed continuously. Therefore, it is the option with regard to the highest-bandwidth applications, such as 10GbE, 4G Fibre Channel, 40Gbit/s and 100Gbit/s later on. It’s also the actual technologies essential for local transportation, along with cascaded optical amplifiers.

FiberStore tends to be usually supplying the actual DWDM SFP+ transceivers along with top quality in the sensible cost to the clients. Have a wide selection of optical transceiver module there.