Training - ADC KRONE - Introduction to Fiber Optical

Introduction to Optical Fiber Anton Indrawata Technical Manager Enterprise S.E Asia Properties and Applications of Optical Fibre Introduction • Optical fibre uses light waves • LED or Laser - ON or OFF simulates digital “Ones & Zeros” • Fibre comprised of high purity silica glass Properties and Applications of Optical Fibre Electrical to Optical Conversion • Electrical signals in copper are compatible with terminal equipment • Fibre transmission uses light, which are not compatible with terminal equipment which uses electrical signals • Requires to convert light to electrical - cost penalty Properties and Applications of Optical Fibre Advantages • Virtual total immunity to electrical noise • Supports extremely high data rates • Inherently safe from hazardous voltages if non-metallic • Low transmission loss at very high data rates • Doesn't radiate EMI • Light weight • Increase in distance Properties and Applications of Optical Fibre Disadvantages • Cost of electrical to optical conversion • Termination more costly and time consuming • Jointing/Splicing more costly and time consuming compared to Direct Termination • Care in fibre handling during installation - bending and tension Properties and Applications of Optical Fibre Fibre vs Copper • Loss increases with high frequency transmission in copper • Loss stays the same with high frequency transmission in fibre • Copper have NINETEEN (19) test parameter • Fibre have ONE (1) test parameter (Multimode) Properties and Applications Optical Fibre Electrical Power Separations • Copper requires installation practice for separation/segregation from power • Fibre does not require separation/segregation unless fibre cable has a electrically conductive elements • Thermal load of power cable should be considered Optical Fibre Applications Customer Premises • Inter-LAN links within & between buildings • In 1980’s: Backbone for FDDI, Token Ring • Delivery of multimedia such as pay TV, video conferencing, video imaging • Carrier services such as Broadband ISDN, B-ISDN, multimedia high speed data, ATM, Gigabit Ethernet, Fibre Channels etc Optical Fibre Applications Wavelength Division Multiplexing - WDM • Transmitting data/video on different light wavelengths • Combining them using diffraction grating (coupler) , transmission over fibre • Separating individual wavelengths at receiver coupler/splitter Optical Fibre Applications Wavelength Division Multiplexing - WDM 10 Fibre Distribution Unit 102 Surface Box • Fibre fully managed in back box and splice tray • Robust and lightweight design • Fits into standard double gang footprint • Suitable for Blown Fibre System 103 Connectors & Adaptors 104 Pigtail & Patchcords 105 Fibre Closure 106 Fibre Closure 107 Outside Plant Cable 108 Outside Plant Cable 109 Indoor Cable Riser Cable 110 Indoor Riser Cable 111 Breakout Cable 112 Indoor / Outdoor LSZH Cable 113 Indoor / Outdoor LSZH Cable 114 Indoor Horizontal Cable 115 Indoor Horizontal Cable 116 ... uses electrical signals • Requires to convert light to electrical - cost penalty Properties and Applications of Optical Fibre Advantages • Virtual total immunity to electrical noise • Supports extremely... re-enforce • Angles which re-enforce are - Modes of Propagation • Large fibres use many paths or modes - MMOF • SMOF one path only - small diameter 27 Light Propagation in Optical Fibre Modes Propagation... speed data delivery 42 Optical Fibre Applications Backbone Cabling - Voice/Data • UTP 100Ω for voice -PABX, ISDN • Multimode O/Fibre for short distance - less than 4km - interLAN, FDDI • Singlemode