The Benefits of FTTH 1. Speed Fiber-optic Internet is many times faster than even the highest-speed copper Internet connections, with options available that range from 5 Mbps to 100 Gbps. 2. Cloud Access From customer relationship management (CRM) tools to data storage, the cloud is an important business tool for apps, hosting, and more. 96% of organizations are now using …
View 02Ex6andEx21chp2.docx from AA 1Ankur Patel 800893374 Ex6andEx21Chp2 Exercise 6 –Chapter 2 What are the advantages of fiber optics over copper as a transmission medium? Is there any downside of
Jun 29, 2018 · The first advantage of fiber cable is its interference immunity, better inherent security that robust distances because of its huge bandwidth compare traditional copper and coaxial cable. The following are the advantages of fiber …
Mar 01, 2011 · Allowance for growth as developments increase the amount of data transmitted. Fiber optics have been around for many years and should not be considered "bleeding-edge" technology. In fact, the principle that makes fiber-optic transmission possible was first demonstrated in the early 1840s.
But it is fiber-optic technology, a method of sending and receiving information over great distances using light as the carrier, that boasts significant advantages , whether as a backbone or a total transmission solution. Some of fiber optics' more relevant advantages are listed here. Better-quality transmission.
It is far less than the equivalent loss in copper cables, leading to long-haul fiber connections with repeater distances of 43 to 93 miles, or 70 to 150 kilometers. So there is no doubt that fiber optics can handle massive amounts of digital information across vast distances, and with immunity to interference.
Attenuation in fiber optics, also known as transmission loss, is the reduction in intensity of the light beam (or signal) with respect to distance travelled through a transmission medium. It is far less than the equivalent loss in copper cables, leading to long-haul fiber connections with repeater distances of 43 to 93 miles, or 70 to 150 kilometers. So there is no doubt that fiber optics can handle massive amounts of digital information across vast distances, and with immunity to interference.
Coaxial has its limitations, including restricted transmission distance, signal degradation over long cable runs and interference. Networking, digital and Internet Protocol (IP) have ushered in unshielded twisted-pair (UTP) cable and high-speed Ethernet, employing IP to carry the digitized video images.
Back to our CSO's office … When Terry asked what a balun is, Helena was quick to explain it is a device that connects a balanced line to an unbalanced line. It allows a signal of one impedance value to be transmitted over a cable that uses a different impedance. Impedance is simply a measure of opposition to alternating current. A video balun allows us, she says, to send video signals over a cable not meant for video. A common situation involving video baluns is use with Category 5 cable. Coaxial cable, which transmits video, has an impedance of 75 ohms while Category 5 has a 100-ohm impedance.
Passive baluns convert the signal while active baluns impart an amplification method to increase transmission distance. In a four-pair UTP cable, typically one of the four pairs handles the video so three pairs can potentially provide power and pan/tilt/zoom control from a head end to a camera.
Fiber within most buildings is multimode, for the most part. Some infrastructures, such as those for Terry and Helena, have a combination of multimode and singlemode. No matter the mode, there needs to be a way to convert the video signal over to an optical format and back again. So several devices are part of a fiber-optic transmission system, including receivers and transmitters (which can be combined into transceivers), video-to-fiber converters, connectors and adapters.
A physical cut in the optical fiber is performed to get access to the light in the core. However this is a risky method because of the sensitive nature of the fiber.
An optical detector is put on the cable that has to be bent as much as possible. Only 1% of the signal strength is lost due to the bending, and transmission will not be disturbed, because of the high transmission margins. An alternative to bending is to use a fiber clamp attached on the straight fiber. They are commercially available and the cost is below 1000 US dollar.
Fiber optics provides many advantages over copper conductors including higher bandwidth, transmission of signals over longer distances, lower weight and cost and immunity from electromagnetic interference. These attributes make it the increasingly preferred medium for applications such as avionics, energy, mining, broadcast, and data/telecommunications.
The last component of the fiber optic link is the optical receiver, which uses a photodiode to convert the optical signals into electrical. The two types of photodiodes used are: Positive Intrinsic Negative (PIN) and the Avalanche PhotoDiode (APD)
The transmitter converts the electrical signals to optical. A transmitter contains a light source such as a Light Emitting Diode (LED) or a Laser (Light Amplification by Stimulated Emission of Radiation) diode, or a Vertical Cavity Surface Emitting Laser (VCSEL).
Physical contact connectors utilize fiber in a tightly toleranced ceramic ferrule. This allows easy handling of the fiber and protects it from damage. The principle of physical contact connectors involves the direct contact of polished fibers within two ceramic ferrules. The ferrules are aligned using a ceramic alignment sleeve (see Figure 15). Insertion loss is a function of the alignment accuracy and the polish quality. There are springs behind the ferrule to ensure that the two ferrules are in constant contact even in high vibration and shock environments.
The other connector technology is expanded beam, which consists of placing a lens at the exit of each fiber to widen and collimate the light. In this configuration, there is an air gap between the two optical fibers/lens assemblies (see Figure 19).
Mark Curran, Vice President, Sales and Marketing: Mark has 25 years experience in a variety of sales, program management, and product management positions in the fiber optics industry, including military, cable television and telecommunications. Mark earned his Bachelors Degree in Electrical Engineering from the University of Connecticut and a Masters Degree in Electrical Engineering from the University of Southern California.
It's the communications technology that works by sending signals down hair thin strands of glass fiber (and sometimes plastic fiber.) It began about 30 years ago in the R&D labs (Corning, Bell Labs, ITT UK, etc.) and was first installed in Chicago, IL, USA in 1976.
Most of it goes relatively long distances, from a few thousand feet to hundreds of miles.
Some of the EIA procedures are also called OFSTP (optical fiber system test procedures) like OFSTP-14 for the installed cable plant. The only common mandatory standard is the NEC 770 (National Electrical Code). The NEC specifies fire prevention standards for fiber optic cables.
Most of what we call standards are voluntary standards, created by industry groups to insure product compatibility. They are not "codes" or actual laws that you must follow to be in compliance with local ordinances.
Few installers do both outside plant and premises cabling. The companies that do are usually very large and often have separate divisions doing each with different personnel. Most contractors do nothing but premises cabling.
The reality is that high power lasers burning holes in metal or burning off warts mostly have little relevance to your typical fiber optic installation. Optical sources used in fiber optics are of much lower power levels (The exception is high power DWDM or CATV systems). Of course, you should always be careful with your eyes, especially when using a fiber optic microscope. NEVER look into a fiber unless you know no light is present - use a power meter to check it - and anyway, the light is in the infrared and you can't see anything anyway!