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An objective type of question on optical fiber is on that focuses on the integral part of fiber optic. A good question would be, " Why are optical fibers immune to EMI? "
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Which types of electromagnetic waves can be used to send signals along optical fibers?
Only light is used to send signals along optical fibres. That's why this type of fibre is described as "optical". Fibres designed to conduct electrical signals are referred to as "wires".
Purpose of cladding in optical fiber its density relative to the core?
Optical fibres are used to transmit light over distances of up to several hundred kilometres. A typical optical fibre consists of a cylindrical glass core, just a few micrometres in diameter, surrounded by a layer of a slightly different type of glass known as the cladding. Light in the core travels slightly slower than light in the cladding and this property tends to keep any light sent into the core from one end of the fibre from leaking out, until it reaches the far end. <a href="http://gow.epsrc.ac.uk/ViewGrant.aspx?GrantRef=EP/C014731/1" target="_blank" rel="nofollow">http://gow.epsrc.ac.uk/ViewGrant.aspx</a> The cladding is a glass sheath that surrounds the core. The cladding acts like a mirror, reflecting light back into the core. The cladding itself is covered with a plastic coating and strength material when appropriate. <a href="http://www.linktionary.com/f/fiber-optic.html" target="_blank" rel="nofollow">http://www.linktionary.com/f/fiber-optic
What is the Relationship between organizations broad purpose and objective?
Type your answer here... what is the relation ship between the organization's broad purpose and objectives
What type of speech was The Question of South Africa?
Persuasive Speech
Are lil Wayne and whoopi goldberg related?
no what type of question is that
Is optical fiber ihollow or not?
The main part of an optical fiber is a glass fiber (NOT hollow) within another glass fiber of another type of glass. Both types of glass have a different index of refraction; the signal travels through the inner glass fiber.
What type of Electromagnetic radiation used in optical fiber communication?
Gamma rays.
How do you launch optical power into a particular fiber from some type of luminescent source?
first of all we should know the coupling efficiency. suppose that the Pf is the power coupled into a fiber and Ps is the power from the led source , then the efficiency is give by Pf / Ps. it also depends on the radius of the recipient fiber core. The launching of optical power into a fiber also depends on the type of led we are considering.
What is the Principle of optical fiber?
Fiber optic cables containing silica called filamentous crystal crystalline silica is actually the main component of these filaments heap on the inner wall can be attached to the wire with the wire bent over bent when the optical signal from the wire the optical signal to one input of the specular reflection on the surface of the silica on the principle of reflective transmission until it reaches the other end of the optical signal conductor recognizer so far. Fiber is divided into the following two categories: 1) transfer points modulo class Transfer points modulo class of single-mode fiber and multimode fiber. Single-mode fiber core diameter is small, at a given operating wavelength only in single-mode transmission, the transmission frequency bandwidth, transmission capacity. Multimode fiber is given in the operating wavelength, can be transmitted simultaneously to a plurality of mode optical fiber. Compared with single-mode fiber, multimode fiber transmission performance is poor. 2) refractive index distribution type Refractive index distribution type optical transitions can be divided into optical fiber and tapered optical fiber. Hopping optical fiber core refractive index and the refractive index of the protective layer is a constant. And a protective layer in the core of the interface, the refractive index changes stepwise type. Graded refractive index of optical fiber core increases as the radius decreases according to certain rules, and the protective layer of the core is reduced to the junction of the refractive index of the protective layer. Similar to the refractive index of the core changes parabola.
What type of fiber-optic tester should you purchase to make sure the fiber-optic cable was installed without any fault?
optical time domain reflectometer
Can you describe fiber optic cable?
An optical fiber cable is a cable containing one or more optical fibers. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed.
How Objective type question and answers about theory of machine?
governors
How many types of fibers are there?
There are two basic types of optical fiber.Multi Mode Optical FiberUsed to transmit many signals per fiber. (Multi Mode fibers are generally used for computer networks, lan applications).MultiMode Optical Fiber is produced as 50/125 and 62.5/125. (Core/Cladding diameter in microns.)Single Mode Optical FiberUsed to transmit one signal per fiber (Single Mode fibers are generally used for telephone and cable tv applications.)Single Mode Optical Fiber is produced as 8/125 and 9/125. (Core/Cladding diameter in microns.)
What about Cable Monitoring System?
GLSUN optical cable monitoring system, combined with OTDR, optical switch, and upper-level network management software, form a systematic and intelligent system integrating functions of testing, analysis, alarm, positioning, information management, and worksheet. It features high integration density, strong commonality, abundant product form, and flexible upgrading and expansion. Fiber In-Service Monitoring Light sources of different wavelengths will not interfere with each other in the transmission process in optical fiber. Based on this principle, we combine the service light [wavelength 1550] and test light [wavelength 1650] for transmission, so that the quality of optical fiber can be monitored without interruption of service. Spare Fiber Monitoring Spare fiber monitoring is to inject the monitoring signal into the spare fiber and indirectly observe the loss of other fiber in the cable by monitoring the loss of the spare fiber. Since the monitoring signal goes through the spare optical fiber, passive device such as filter is not required, which can effectively reduce the installation process and cost of the system. Fiber Out-of-Service Monitoring Optical fiber out-of-service monitoring refers to monitoring the original communication optical fiber in the condition that communication equipment is interrupted. Therefore, passive devices such as filter are not required, which can effectively reduce the installation process and system cost of the system. The disadvantage is that communication equipment needs to be interrupted. Application: Optical switch + OTDR Monitoring Scheme Optical power monitoring scheme can monitor the total loss of optical fiber, but it can not reflect the loss performance of optical fiber, nor can it find the fault of optical fiber. While OTDR can monitor the loss performance of the fiber. It can find the failure type and accurately by analyzing the OTDR curve. Since OTDR costs are relatively high, optical switch is needed to switch to different optical fibers, so as to reduce the cost of the whole system. By controlling the 1xN optical switch, the control unit starts the OTDR to test the optical fiber loss performance in turn. By analyzing the test curve of OTDR, the purpose of optical fiber monitoring is achieved. Application: Optical Power Detector + Optical Switch + OTDR Monitoring Scheme This scheme can effectively solve the problem of poor timeliness for fault report of optical switch + OTDR scheme. The optical power detector monitors the total loss of the optical fiber in real-time. If any abnormality is found, the control unit is informed to start and switch to the abnormal optical fiber and conduct OTDR fiber performance test. The alarm type and will be identified by analyzing OTDR curve. The control unit can also control the OTDR and optical switch for periodic tests and roll call tests. However, this scheme still has the problem of poor timeliness caused by OTDR polling in case of abnormality of multiple monitored fibers. Application: PON + Optical Switch + OTDR Monitoring Scheme With the development of FTTX, PON network monitoring and maintenance has been mentioned on the agenda by telecom operators or special network users. Glsun developed high sampling accurate OTDR module for PON monitoring. Reference from www dot glsunmall dot com
Where you get welding objective type question and answer?
welding current for 2mm thick. ms plate
A refracting telescope produce an image using an?
A refracting telescope is a type of optical telescope. It was used in astronomical telescopes and spy glasses. Objective lens are used to produce the image.
What is optical communication?
An optical fiber is a flexible, transparent fiber made of very pure glass (silica) not much bigger than a human hair that acts as a waveguide, or "light pipe", to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communication. Fibers are used instead of metal wires because signals travel along them with less loss and are also immune to electromagnetic interference. Fibers are also used for illumination, and are wrapped in bundles so they can be used to carry images, thus allowing viewing in tight spaces. Specially designed fibers are used for a variety of other applications, including sensors and fiber lasers.
