Notes for Module 4 - View Online or
... Digital bandwidth measures how much information can flow from one place to another in a given amount of time. The fundamental unit of measurement for digital bandwidth is bits per second (bps). Since LANs are capable of speeds of millions of bits per second, measurement is expressed in kilobits per ...
... Digital bandwidth measures how much information can flow from one place to another in a given amount of time. The fundamental unit of measurement for digital bandwidth is bits per second (bps). Since LANs are capable of speeds of millions of bits per second, measurement is expressed in kilobits per ...
4.8 Acceptance Angle and Numerical Aperture
... The fibre output is a cone of light that spreads out wider as the distance from the fibre exit increases. The grid slide or screen and ruler can be used to measure diameters. The edges of the cone of light may appear fuzzy so there will be an error introduced into your measurements. Measurement of t ...
... The fibre output is a cone of light that spreads out wider as the distance from the fibre exit increases. The grid slide or screen and ruler can be used to measure diameters. The edges of the cone of light may appear fuzzy so there will be an error introduced into your measurements. Measurement of t ...
14_04_2014 - IB Phys..
... down the length of the fibre and the arrival of light is registered by a photodiode • In the absence of any light, falling on the photodiode, the current is zero • When light of a specific wavelength falls on the photodiode, a current flows. The magnitude of the current is proportional to the intens ...
... down the length of the fibre and the arrival of light is registered by a photodiode • In the absence of any light, falling on the photodiode, the current is zero • When light of a specific wavelength falls on the photodiode, a current flows. The magnitude of the current is proportional to the intens ...
Survey: Installed Optical Fiber Cabling Distances
... - The purpose of the survey is to characterize the lengths and type of installed optical fiber used in commercial building telecommunication designs. - Survey definitions are based on TIA/ EIA- 568- A Commercial Building Telecommunications Cable Standard and TIA/EIA-569Commercial Building Standard f ...
... - The purpose of the survey is to characterize the lengths and type of installed optical fiber used in commercial building telecommunication designs. - Survey definitions are based on TIA/ EIA- 568- A Commercial Building Telecommunications Cable Standard and TIA/EIA-569Commercial Building Standard f ...
EEE440 Modern Communication Systems Optical Fibre
... They lose some of their energy into heat and results in an attenuated output signal. The bouncing rays and the lowest order mode, traveling down the center axis, are all traversing paths of different lengths from input to output. Consequently, they do not all reach the right end of the fiber optic c ...
... They lose some of their energy into heat and results in an attenuated output signal. The bouncing rays and the lowest order mode, traveling down the center axis, are all traversing paths of different lengths from input to output. Consequently, they do not all reach the right end of the fiber optic c ...
Slide 1
... stream will be shrinked to 25ps when it goes through stm 64 (10Gbps).If the technology improves to shrink less than 25ps , then the no of bits in the higher order pcm will be more than 10Gbps. •To transmit 10Gbps , the bandwidth required in the optical fibre is around 0.078ns = 78ps ( for 1 waveleng ...
... stream will be shrinked to 25ps when it goes through stm 64 (10Gbps).If the technology improves to shrink less than 25ps , then the no of bits in the higher order pcm will be more than 10Gbps. •To transmit 10Gbps , the bandwidth required in the optical fibre is around 0.078ns = 78ps ( for 1 waveleng ...
7.2.2 Coaxial Cable Coaxial cable
... power in the signal: The greater the power, the greater the distance. ...
... power in the signal: The greater the power, the greater the distance. ...
micro-bending, macro-bending and less bend sensitive optical
... This White Paper seeks to clarify the difference between micro-bends and macro-bends and also to explain the impact of optical fibres described as “less bend sensitive” or, more inaccurately, as “bend insensitive”. Macro-bends can be most easily classified as being optical fibres, or cables containi ...
... This White Paper seeks to clarify the difference between micro-bends and macro-bends and also to explain the impact of optical fibres described as “less bend sensitive” or, more inaccurately, as “bend insensitive”. Macro-bends can be most easily classified as being optical fibres, or cables containi ...
Communication Media [Compatibility Mode]
... • Over this insulating material is a woven copper braid or metallic foil that acts both as the second wire in the circuit and as a shield for the inner conductor • This second layer or shield can help reduce the amount of outside interference • The shield is covered by a cable jacket ...
... • Over this insulating material is a woven copper braid or metallic foil that acts both as the second wire in the circuit and as a shield for the inner conductor • This second layer or shield can help reduce the amount of outside interference • The shield is covered by a cable jacket ...
Wireless Communications and Networks
... fiber with stranded KevIar* and a protective PVC jacket can increase the pulling strength up to 500 lb. Installations requiring greater tensile strengths can be achieved with steel reinforcement. ...
... fiber with stranded KevIar* and a protective PVC jacket can increase the pulling strength up to 500 lb. Installations requiring greater tensile strengths can be achieved with steel reinforcement. ...
lab11
... The speed of light and other wave properties in a coaxial cable Object: Time the speed of travel of a pulse along a coaxial cable to determine the speed of light in the material, and to investigate the nature of terminating the cable. Prior to Lab: Look up in an appropriate handbook the dielectric c ...
... The speed of light and other wave properties in a coaxial cable Object: Time the speed of travel of a pulse along a coaxial cable to determine the speed of light in the material, and to investigate the nature of terminating the cable. Prior to Lab: Look up in an appropriate handbook the dielectric c ...
UTP Cable Certification and Testing
... High frequency applications such as Gigabit Ethernet and certainly ATM will require better and higher bandwidth cables than originally specified by the Category 5 standard. While Gigabit Ethernet should be compatible with Category 5 cabling, it is suggested that cabling for high speed applications i ...
... High frequency applications such as Gigabit Ethernet and certainly ATM will require better and higher bandwidth cables than originally specified by the Category 5 standard. While Gigabit Ethernet should be compatible with Category 5 cabling, it is suggested that cabling for high speed applications i ...
Complete Train Control LT1
... Note: When making your own LocoNet Cables, it is important to make them in a consistant manner. At Digitrax, the white wire is always on the right side of the plug when the plug is viewed with the clip at the top. 3. Connect the other end of the LocoNet Cable being tested to any powered Digitrax Boo ...
... Note: When making your own LocoNet Cables, it is important to make them in a consistant manner. At Digitrax, the white wire is always on the right side of the plug when the plug is viewed with the clip at the top. 3. Connect the other end of the LocoNet Cable being tested to any powered Digitrax Boo ...
Parallel Optic Technology - Accu-Tech
... over two or more separate fibers. Parallel optics relies on spatial division multiplexing, in which a signal is spatially divided among multiple fibers and simultaneously transmitted across those fibers. Serial Optic Transmission - The sequential transmission of signal elements of a data group. The ...
... over two or more separate fibers. Parallel optics relies on spatial division multiplexing, in which a signal is spatially divided among multiple fibers and simultaneously transmitted across those fibers. Serial Optic Transmission - The sequential transmission of signal elements of a data group. The ...
6_Line_Communication
... (i) The signal becomes weak when it travels a very large distance through a twisted pair of wires. As a result, transmission becomes faulty. (ii) Telephone lines run overhead, so they can be broken during storm, etc. ...
... (i) The signal becomes weak when it travels a very large distance through a twisted pair of wires. As a result, transmission becomes faulty. (ii) Telephone lines run overhead, so they can be broken during storm, etc. ...
Cisco Semester I Unit 4 Electricity
... Sometimes on a physical medium a signal travels to the end of the medium and part of the signal reflects back toward the source. This reflection can interfere with the original signal. ...
... Sometimes on a physical medium a signal travels to the end of the medium and part of the signal reflects back toward the source. This reflection can interfere with the original signal. ...
Fibre Optics - Westmount High School
... Less signal degradation - The loss of signal in optical fibre is less than in copper wire. Light signals - Unlike electrical signals in copper wires, light signals from one fibre do not interfere with those of other fibres in the same cable. This means clearer phone or TV reception. Low power - Beca ...
... Less signal degradation - The loss of signal in optical fibre is less than in copper wire. Light signals - Unlike electrical signals in copper wires, light signals from one fibre do not interfere with those of other fibres in the same cable. This means clearer phone or TV reception. Low power - Beca ...
Data Communication & Network
... Reduced need for error detection and correction Enables longer link distances Attenuation unaffected by transmission rate Easier network upgrade Can combine different services: telephony, TV, internet… ...
... Reduced need for error detection and correction Enables longer link distances Attenuation unaffected by transmission rate Easier network upgrade Can combine different services: telephony, TV, internet… ...
Sample questions on optical fibre section of course
... 1 (a) Bending loss caused by tight cable bends. At such a bend illustrated below the conditions for total internal reflection are not maintained for some rays. This occurs because for such rays have angles of incidence to the cladding less than the critical angle in the vicinity of the bend. Thus op ...
... 1 (a) Bending loss caused by tight cable bends. At such a bend illustrated below the conditions for total internal reflection are not maintained for some rays. This occurs because for such rays have angles of incidence to the cladding less than the critical angle in the vicinity of the bend. Thus op ...
Cable and the Specialization of Television
... multiple levels of service organized into tiers: Basic: Includes local broadcast channels, advertiser supported cable services, and access programming. Upper Tier: More desirable cable services, such as sports networks and movie channels. Premium: Subscription pay channels such as HBO that are often ...
... multiple levels of service organized into tiers: Basic: Includes local broadcast channels, advertiser supported cable services, and access programming. Upper Tier: More desirable cable services, such as sports networks and movie channels. Premium: Subscription pay channels such as HBO that are often ...
Optical attached cable
Optical attached cable (OPAC) is a type of fibre optic cable that is installed by being attached to a host conductor along overhead power lines. The attachment system varies and can include wrapping, lashing or clipping the fibre optic cable to the host. Installation is typically performed using a specialised piece of equipment that travels along the host conductor from pole to pole or tower to tower, wrapping, clipping or lashing the fibre optic cable in place. Different manufacturers have different systems and the installation equipment, cable designs and hardware are not interchangeable.Although lashed cable systems and clipped cable systems have been investigated as a means of attaching optical fibre cables to overhead power lines, wrapped cables were the first type to be developed and are the only type in common use today.Wrapped cable systems were developed independently in the UK (SkyWrap) and Japan (GWWOP) during the 1980s and have been widely used, with installations in every continent except Antarctica. Through licensing and through independent development, wrapped cable systems have also been supplied by French, Italian, German and Russian companies.The installation process for wrapped cables involves passing a drum of cable around and around the host conductor as the carrying device moves across the span. For installation on hosts within 10m of the ground (medium or low voltage overhead lines), it is possible to pull the wrapping machine by hand from the ground below the line. However, a radio controlled power unit using batteries or a petrol engine is normally required when the host conductor is on a high voltage transmission line. Wrapped cables can be applied to earth wires (ground wires, shield wires) on power transmission lines and to phase conductors on transmission, sub-transmission or distribution lines.SkyWrap is the most successful example of OPAC (optical attached cable) and is used together with more familiar optical fibre cables such as OPGW and ADSS to build communications networks for power utilities