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Part No. 212257-B January 2002 4401 Great Americ a Parkw ay Santa Clara, CA 9 5054 Installation and Networking Guidelines for Optical Routing ...
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2 212257 -B Copyright © 2002 Nortel Networks All rights reserved. Januar y 20 02 . The informat ion in this docume nt is subject to change without notice. Th e statements, confi gurations, tec hnical data , and recommenda tions in this docum ent are b elieve d to be accurat e and reliable , but are prese nted wit hout expres s or i mplied warranty ...
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3 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Japan/Nippon requirements only V oluntary Control Council for Interfer ence (VCCI) statement T aiwa n requir ements Bureau of Standards, M etrology and Inspection (BSMI) Statement Canada requirements only Canadian Department of Communications Radio Interference Regulations This dig ...
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4 212257 -B Nortel Networks Inc. sof twar e lice nse agreement NOTICE: Please carefu lly read this lice nse agreeme nt before copy ing or usin g the accomp anying soft ware or installin g the hardware unit wi th pre-en abled soft ware (each of which is referred to as “Software” in this Agreeme nt ) . BY COPYING OR USING THE SOF TW ARE, YOU ACCE ...
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5 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g to any th ir d pa rty the So f tware, or any infor mat ion ab out t he ope rat io n, des ign, perfo rman ce, or i mplem entat i on of t he Software and u ser manuals t hat is conf idential to Nortel Network s and its lic ensors; howe ver , Licensee may g rant permission to its cons ...
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6 212257 -B Licens ee fails to comply with any of the terms and c onditio ns of the lic ense. Upon termin ation for a ny reason, Lic ensee will immedia tely destroy or return to Nortel Networks the So ftware, user manuals, and al l copies . Nortel Networks is not liable to Licen see for dama ges in an y form so lely by re ason of the termin a tion ...
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7 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Contents Pref ace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Hard-copy te chnical ma n ...
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8 Contents 212257 -B Chapter 3 Insta ll i ng the shelf, OADM, and OMUX . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Preparing for i nstalla tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Exceed ing clas s 1 power l evel warni ng . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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9 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Figures Figure 1 W ave length division m ultip lexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 2 CWDM GB IC transcei ver and label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 3 CWDM OA DM network an d equi pment sid e connec ti ...
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10 Figures 212257 -B ...
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11 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Ta b l e s T able 1 Parts of the optic al routing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 T able 2 Ass umptio ns used i n cal cula ting ma ximu m tran smis sion dis tan ce . . . . . 28 T able 3 Point-to-poi nt signal loss v alues . . . . . . . . . . ...
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12 Tables 212257 -B ...
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13 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Preface Nortel Ne tworks* optic al routi ng system suppor ts high- speed data communic ation s in metrop olitan area net works (MANs) by: • Connect ing Gigabi t Ethernet ports with fi ber opti c networks. • Combini ng multipl e wavele ngths o n a sin gle fibe r to expand ava i ...
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14 Pref ace 212257 -B Before you begin This gui de is intended f or network admin istrato rs who have the fol lowing backg round: • Basic knowled ge of ne tworks, and net work har dware • Famil iarity wi th networking concept s and ter minology • Famil iarity wi th Ethernet network administration and Fib er Channe l networki ng Hard-copy tech ...
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Preface 15 Install ation a nd Network ing Gui delines for Opti cal Ro uting How to ge t help If you pu rchased a ser vice c ontract for your Norte l Networks product from a distri butor or author ized reseller , contact t he technica l support staff for that distri butor or re seller for assis tance . If you purcha sed a Nortel Networ ks service pr ...
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16 Pref ace 212257 -B ...
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17 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Chapter 1 Describing the o p tical routing system Nortel Ne tworks* optic al routi ng system uses c oarse wave length divis ion multipl exing ( CWDM) in a gri d of eight op tical wav elengths. CWDM Gigabi t Interf ace Converter s (GBICs) i n the switch t ransmit o ptical signals f ...
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18 Chapte r 1 Describi ng the optica l routin g syste m 212257 -B Parts of the op tical routing s ystem The optic al routing s ystem incl udes the followi ng parts: • Gig ab it i nte rfac e co n ver ters (CW D M GBI Cs) • Optical add/drop multiplexe rs (CWDM OADMs) • Optic al multiple xer/demult iplexers ( CWDM OMUXs) • Optic al shelf to ho ...
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Chapter 1 Describi ng the o ptical r outing system 19 Install ation a nd Network ing Gui delines for Opti cal Ro uting Figure 2 CWDM GBIC t ransce iver an d label For more i nformation abo ut CWDM GBICs, including spe cificat ions, see Instal ling CWDM Gigabit Inte rface Convert ers, part number 21 2256-B. Optical add drop multip lexer description ...
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20 Chapte r 1 Describi ng the optica l routin g syste m 212257 -B Figure 3 CWDM OADM networ k and equi pment side connec tions The CWDM OADM ( Figure 4 ) is installed in a 19 -inch, rack-mo unted 1RU opti cal sh elf ( Figure 15 ). Figure 4 CWDM OADM Front Pane l For info rmation about installing a CWDM OADM, se e “Inserting a CWDM OADM or a CWDM ...
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Chapter 1 Describi ng the o ptical r outing system 21 Install ation a nd Network ing Gui delines for Opti cal Ro uting Figure 5 shows an example o f two separ ate fiber pat hs in a ring conf iguration trav elin g in oppo site or east /west directions into the net work. Figure 5 CWDM OADM ring co nfigurati on ex ample For info rmation on cal culatin ...
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22 Chapte r 1 Describi ng the optica l routin g syste m 212257 -B Figure 6 Four -cha nnel CWDM OM UX front pane l Connec tors with color-cod ed labels ( Ta b l e 1 ) simplify co nnect ion to c olor-c oded CWDM GBICs in the swit ch. CWDM OMUX-4 Figure 7 shows the CWDM OMUX-4 version, wit h four CWDM GBIC equipment side connect ions. Figure 7 CWDM OM ...
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Chapter 1 Describi ng the o ptical r outing system 23 Install ation a nd Network ing Gui delines for Opti cal Ro uting Figure 8 CWDM OMUX -8 network and equ ipm ent si de co nnec ti ons For info rmation about installing a CWDM OMUX, se e “Inserting a CWDM OADM or a CWDM OMUX” on page 38 . For spec ifications, se e “CWDM OMUX specif icatio ns? ...
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24 Chapte r 1 Describi ng the optica l routin g syste m 212257 -B Figure 9 CWDM OM UX point -to-poi nt configu ratio n exa mple For info rmation about calculating ne twork transmissi on distance, s ee Chapter 2, “Cal cula tin g tr a nsm is si on d ist anc e,” on p a ge 2 7 . CWDM O MUX in a ring applic ation CWDM OMUXs are also us ed as the h u ...
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Chapter 1 Describi ng the o ptical r outing system 25 Install ation a nd Network ing Gui delines for Opti cal Ro uting Figure 10 CWDM OMUX ring confi gura tion exam ple For info rmation about calculating ne twork transmissi on distance, s ee Chapter 2, “Cal cula tin g tr a nsm is si on d ist anc e,” on p a ge 2 7 . OADM OMUX OMUX OFFICE BUILDIN ...
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26 Chapte r 1 Describi ng the optica l routin g syste m 212257 -B ...
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27 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Chapter 2 Calculating transmission distance This chapt er will hel p you determin e the maximum trans mission dis tance for your CWDM network conf igurati on. This cha pt er in clu d es th e fo ll ow in g to pic s: • “About transm issio n distanc e and optical link budge t” ...
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28 Chapte r 2 Calc ulatin g tran smissi on di stanc e 212257 -B How to calculate expected loss budget T o calc ulate the ex pected los s budget for a propos ed netw ork conf igura tion: 1 Identi fy all points whe re signal str ength will be los t. 2 Calculat e the expect ed loss f or each point. 3 Add the expected losses toget her . How to calculat ...
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Chapter 2 Calculat ing trans missi on distan ce 29 Install ation a nd Network ing Gui delines for Opti cal Ro uting Procedure T o calc ulate the maximum tr ansmission di stance f or a proposed ne twork conf igurat ion: 1 Identi fy all points whe re signal str ength will be los t. 2 Calculat e the expect ed loss f or each point. 3 Find tot al passiv ...
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30 Chapte r 2 Calc ulatin g tran smissi on di stanc e 212257 -B Ta b l e 3 sho ws t ypi cal l oss val ues that can be u sed to ca lcu lat e the tran sm i ssi o n distanc e for the poi nt-to-poin t network in Figure 1 1 . Ta b l e 4 shows c alc ul ati ons used to det er mine maximum transmis sio n distance for the p oint- to-poi nt net work ex ample ...
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Chapter 2 Calculat ing trans missi on distan ce 31 Install ation a nd Network ing Gui delines for Opti cal Ro uting As it pas ses from point A to point B (the most remote p oints in the mesh ri ng network e xample in Figur e 12 ), the signal is expected to los e strengt h in the fiber optic c able, and in ea ch connect ion between th e individual C ...
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32 Chapte r 2 Calc ulatin g tran smissi on di stanc e 212257 -B Ta b l e 5 sho ws t ypi cal l oss val ues that can be u sed to ca lcu lat e the tran sm i ssi o n distanc e for the mesh ring netwo rk example in Figure 12 . Ta b l e 6 shows the calc ulati ons use d to dete rmine maxi mum transmi ssion d istan ce for the mesh ring networ k exampl e in ...
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Chapter 2 Calculat ing trans missi on distan ce 33 Install ation a nd Network ing Gui delines for Opti cal Ro uting Hub and spo ke transmis sion distance Hub and Spoke to pologies a re the most co mplex. The characterist ics of all components designed int o the netwo rk must be consi dered in c alculating transmi ssion distance. The following fac t ...
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34 Chapte r 2 Calc ulatin g tran smissi on di stanc e 212257 -B Ta b l e 7 sho ws t ypi cal l oss val ues that can be u sed to ca lcu lat e the tran sm i ssi o n distanc e for the hub and spok e network i n Figure 13 . Ta b l e 8 shows the calc ulati ons use d to dete rmine maxi mum transmi ssion d istan ce for the hub and spoke ne twork in Figur e ...
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35 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Chapter 3 Installin g the shelf, OADM , and OMUX The sh elf and mul tiplexers are passive equipment and require n o power or electr onic This cha pter d escribes how to install o ptical rout ing compo nents, and include s the following t opics. • “Pre paring for i nstal lati o ...
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36 Chapte r 3 Insta lling the shel f, OADM, a nd OMU X 212257 -B Figure 14 C lass 1M la ser w ar ning Environmental and physical requirements The opt ical routi ng syst em is m ounte d in an o ptica l shel f with connec tions at the front of t he modu le. For user acces s to t hese connect ions, a minimum of 36 inch es (90 cm) of clear ance is requ ...
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Chapter 3 Installi ng the she lf, OA DM, and OMUX 37 Install ation a nd Network ing Gui delines for Opti cal Ro uting • Clear the area of synthetic mat erials such as polyester , plas tic, vinyl , or styrof oam because the se materia ls ca rry stat ic electrici ty that damage s the equipment . Installing the shelf T o in stall t he optical s helf ...
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38 Chapte r 3 Insta lling the shel f, OADM, a nd OMU X 212257 -B Figure 15 She lf with plug-in modul e in 19 -inch rac k Inserting a CWDM OADM or a CWDM OMUX CWDM OADMs and CWDM OMUXs are pass ive de vices tha t require no power for their opera tion. Y o u can in sert them in t he optical shelf ( Figure 15 ) and t hen connect the m into your netw o ...
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Chapter 3 Installi ng the she lf, OA DM, and OMUX 39 Install ation a nd Network ing Gui delines for Opti cal Ro uting T o inse rt a CWDM OADM or a CWDM OMUX in the optical s helf: 1 Align th e plug-in modul e with the opt ical shel f. 2 Gently pu sh the plug-i n module into the s helf cavit y . 3 T ighten the captive scr ews. The module i s install ...
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40 Chapte r 3 Insta lling the shel f, OADM, a nd OMU X 212257 -B 2 Insert the wavelengt h-specif ic CWDM GBICs into t heir respe ctive net work device( s) . T o install a CWDM GBIC, se e I nstal ling CWDM Gigabit Interf ace Conver ters, par t number 212256- B. 3 Clean all f iber optic connect ors on the cab ling ( see “Handling and cl eaning fibe ...
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Chapter 3 Installi ng the she lf, OA DM, and OMUX 41 Install ation a nd Network ing Gui delines for Opti cal Ro uting Cabling a four-channel CWDM OM UX This sec tion descri bes how to ca ble the foll owing: • CWDM GBIC to a CWDM OMUX-4 ( Fig ure 17 ) • CWDM OMUX-4 to west and east network backb one interfaces ( Figure 1 7 ) T o connec t fiber o ...
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42 Chapte r 3 Insta lling the shel f, OADM, a nd OMU X 212257 -B 4 Make th e followi ng network backb one connect ions ( Fig ure 17 ): • Connect the network b ackbone east f iber optic cable s to th e east (lef t) CWDM OMUX-4. • Connect the n etwork back bone west fibe r optic c ables to the west (ri ght) CWDM OMUX-4. Cabling an eight-channel C ...
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Chapter 3 Installi ng the she lf, OA DM, and OMUX 43 Install ation a nd Network ing Gui delines for Opti cal Ro uting 4 Make th e followi ng network backb one connect ions ( Fig ure 18 ): • Connect the network b ackbone east f iber optic cable s to th e east (lef t) CWDM OMUX-8. • Connect the n etwork back bone west fibe r optic c ables to the ...
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44 Chapte r 3 Insta lling the shel f, OADM, a nd OMU X 212257 -B Removing a CWDM OAD M or a CWDM OMUX CWDM OADMs and CWDM OMUXs are pass ive de vices tha t require no power for the ir operati on. Y ou ca n remove the m from the optical she lf ( Figure 15 ) afte r disconne cting them fr om your network. T o remove a CWDM OADM or a CWDM OMUX plug-in ...
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45 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Appe ndix A CWDM OADM specifications Ta b l e 9 CW DM OADM sp ecifi catio ns Item S pec if ica tion Physica l Dim ensi on s Plug-in M odul e Size Rack Mount 8.35 ” x 1.7" x 1 0.4" 1RU Conn ectors N etwor k Side Equipmen t Side 2 dual SC/ PC 2 dual SC/ PC Cabling SMF , ...
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46 Appendi x A CWDM OADM sp ecifi cations 212257 -B ...
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47 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Appe ndix B CWDM OMUX specifications Ta b l e 1 0 CWDM OMUX s pecificati ons Item Specification Physica l Dim ensi on s Plug-in M odul e Size Rack Mount 8.35” x 1. 7 5" x 8.7" 1RU Conn ectors N etwor k Side Equipmen t Side OMUX-4 1 dual SC / PC 4 dual SC / PC OMUX-8 1 ...
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48 Appendi x B CWDM OMUX sp ecifi cations 212257 -B ...
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49 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Appe ndix C Handling and cleaning fiber optic equipment Precautions Although t he glass opt ical path of fi ber optic ca ble is pr otect ed with re inforcing mate ri al an d p last ic in sul atio n, it is sub ject to d amag e. U se the foll owi n g precaut ions to avoid damaging t ...
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50 Appendi x C Handling and clea ning fi ber opti c equi pment 212257 -B Frequ ent ove rstr essing of fi ber optic cable causes progressiv e degenerati on that lead s to f ailure. If you s uspect damage to a f iber optic cab le, either d ue to mishandli ng or an abnor mally high e rror rat e observe d in one d irecti on, reverse the cable pairs. If ...
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App endix C Handlin g and c leani ng fib er opti c equip men t 51 Install ation a nd Network ing Gui delines for Opti cal Ro uting Before c onnecting the m to tra nsmission equipment, test e quipment, patch panels , or other connectors, clean all fibe r optic conne ctors. The perfo rmance of an optical fiber conne ctor depe nds on how clean t he co ...
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52 Appendi x C Handling and clea ning fi ber opti c equi pment 212257 -B 4 Dry the c onnector surf aces b y apply ing can ned air or letting th em air dry . Cleaning Duplex SC Connectors T o clea n duplex con nector s: 1 T o re mo ve or re tr act t he s hro u d, do one of th e foll ow in g. • On remova ble shrou d connectors, hold th e shrou d on ...
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App endix C Handlin g and c leani ng fib er opti c equip men t 53 Install ation a nd Network ing Gui delines for Opti cal Ro uting Cleaning Receptacl e or Duplex Devices T o clea n receptacl e or duplex devices: 1 Remove du st or debr is by blowing cann ed air into the optical port of th e devi ce usi ng the c anned ai r ext ension tube. 2 Clean th ...
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54 Appendi x C Handling and clea ning fi ber opti c equi pment 212257 -B ...
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55 Ins tallat ion and Networ king Guide lines fo r Op tical Routin g Glossary attenuation The decre ase in signa l strengt h in an optic al fiber caused by abso rption an d scatte ring. Attenua tion can be calculate d to exp ress • sign al loss be tween two point s • total signal loss of a telecommunicat ions system or se gment attenuator A dev ...
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56 Glos sary 212257 -B CD-ROM compact di sc read-onl y memory A compact di sc with pre-re corded data, no rmally used in la rge dat abase- type applica tions such as directo ry , ref e rence, or data retrieval . cha nne l A communic ation s path o r the sig nal sent over that pat h. By multiplex i ng several channels, voi ce cha nnels can b e trans ...
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Glos sary 57 Install ation a nd Network ing Gui delines for Opti cal Ro uting demult iplexing The separ ating of dif ferent wav elengt hs in a wavelengt h-division multipl exing s ystem. The opp osite of mult iplexing. dispers ion The broade ning of input pul ses as they t ravel t he length of a n optical fiber . There ar e three major typ es of di ...
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58 Glos sary 212257 -B fiber See op tical f i ber . fiber loss Also optical f i ber loss. Th e attenua tion of the li ght signal in opt ical -fib er transmi ssion. fiber-optic li nk A combin ation of t ransmitter , rec eiver , and fiber -opti c cable ca pable of trans mit tin g d ata . FO fiber o ptics The branc h of optical technolog y dedicated t ...
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Glos sary 59 Install ation a nd Network ing Gui delines for Opti cal Ro uting hub A group of circuits co nnected at one point on a networ k. insertio n loss In an opt ical fiber system , the tota l optical po wer loss caused by insertion o f an op tical compone nt, su ch as a c onnector , splice, o r coupler . Usual ly given in dB. kbps thousand s ...
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60 Glos sary 212257 -B loss budge t The amou nt of opti cal power lau nched i nto a s ystem that will be lost th rough various mechanisms, such as insert ion losses and fiber attenuatio n. Usually given in dB. MAN metropol itan area networ k A MAN consists of LANs interc onnecte d within a radius of app roximatel y 80 km (50 miles ). MANs typical l ...
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Glos sary 61 Install ation a nd Network ing Gui delines for Opti cal Ro uting NDSF non-d ispersi on-shifted fib er A type of optical fiber optimized for th e 1310 nm transmi ssion window . nanometer See nm. nm nanometer One bi llion th of a meter ( 10 -9 meter). A unit of measu re commonly used t o express the wavelengt hs of lig ht. node A point i ...
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62 Glos sary 212257 -B each signal l evel thereafte r operates at a speed divis ible by th at number . For example, OC- 3 opera tes at 155 .52 Mbit/s. OC-1 opti cal ca rrie r - level 1 An optica l SONET signal at 51.84 Mbit/s . OC-3 opti cal ca rrie r - level 3 An optica l SONET signal at 155. 52 Mbit/s. OC-12 opti cal ca rrie r - level 12 An optic ...
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Glos sary 63 Install ation a nd Network ing Gui delines for Opti cal Ro uting optica l waveguid e See op tical f i ber . passive dev ice A device t hat does not requir e a sou rce of ene rgy to f unction. passthrough A signal bypass mechanis m that a l lows the signal to pass through a device with little or no signal processing. point-to -point tra ...
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64 Glos sary 212257 -B single-mod e fiber See SMF . SMF A mode is o ne of the va rious light wav es that can be tr ansmit ted i n an opt ical fiber . Each o pti ca l si gna l generates many di fferent mode s, but in singl e- mode fiber t he aim is t o only have o ne of them tr ansmitte d. This is achi eved throu gh having a cor e of a ver y sm al l ...
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Glos sary 65 Install ation a nd Network ing Gui delines for Opti cal Ro uting WDM wavelengt h division multi plexing T ransmitti ng many dif ferent colors (wavel engths) o f laser light down the same opti cal fiber at t he same time in order to inc rease the amount of infor ma ti on th at c a n be tran s ferr ed. ...
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66 Glos sary 212257 -B ...
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Ins tallat ion and Networ king Guide lines fo r Op tical Routin g 67 Index A add/dro p mux connecting cables 39 desc ripti on 19 insert in shelf 38 remove from shelf 44 ring application 20 specifications 45 application point-to -point , mux/d emu x 23 ring, ad d/dr op mux 20 ring , mu x /dem ux 2 4 attenuation 27 B block d iagram, connecti ons add/ ...
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68 Index 212257 -B equipmen t side connecti ons add/dro p mux 39 eight-chan nel mux/demux 42 four -channel mux/ d e mux 41 F FC connectors, cleaning 51 fiber optic cable attenu ation and tran smission 27 cleaning connecto rs for 50 precautions with 49 front p anel add/dro p mux 20 four -channel mux/ d e mux 22 G gigabit interface con verter , descr ...
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Index 69 Install ation a nd Network ing Gui delines for Opti cal Ro uting optical routing system desc ripti on 17 shelf, installin g 3 7 P passband, specification add/dro p mux 45 physical dimensions, specification add/dro p mux 45 mux/dem ux 4 7 point-to-po int ap plication calculating transmission distance for 29 mux/dem ux 2 3 netw ork c onfigu ...
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70 Index 212257 -B ...
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