Passive - By Fadi Ghaoui, 20110809

8/3/2019 Passive - By Fadi Ghaoui, 20110809

1/19

Structured Cabling

(Copper & Fiber)by Fadi Ghaoui

Structured Cabling Fiber Optic Cabling


2/19

Structured Cabling


3/19

Copper Buzz Words

Data Rate (Mbps or KBPS) Wire Gauge (AWG) Categories Cat3, Cat5, Cat5e, Cat6 and Cat6A (10Gig) Shielded or unshielded Twisted pair T1: This cable is two twisted pairs of 22 AWG, 100 ohm, Individual SHLD

24 Phone calls at one time or 1,544 KBPS of Data T3: Coax 734 (20AWG) for 450ft and 735 (26AWG) for 225ft (Both 75ohm)

672 Phone calls at one time or 44,736 KBPS of Data Bare Copper (BC) or Tinned Copper (TC)


4/19

Entrance Facility

ServiceProvider

The entrance facility is the point where outside cabling and servicesinterface with backbone cabling.


5/19

Telecommunications Room

Telecommunications Room is the area within a building that housestelecommunications/networking equipment, as well as the cross-connection(patch panels) between backbone and horizontal cabling. I.e. Horizontal Cross-connect (HC).


6/19

Backbone

Backbone consists of the pathways and cabling that provide theinterconnection between the Building Entrance/Equipment Room and theTelecommunication Rooms. It consists of the mechanical terminations forbackbone-to-horizontal cross-connects.


7/19

Horizontal

Horizontal consists of the pathway and cabling that extends betweenthe Telecommunications Room and the Work Area.


8/19

Work Area

Work Area is where personal computers, telephones,printers, etc are located. It also includes equipmentcords that connect the device to the horizontal cable.


9/19

The Standard Horizontal Link

From the desk to the TR, the horizontal link : Horizontal cable, four-pair or optical fiber

Maximum distance for the horizontal link is 90 meters (295 feet), to make sure thenetworking devices will work properly.

Reliability is provided by star topology No interruptions in your private line to the TR One cable cut does not affect the rest of the network

Ethernet switch


10/19

Fiber Optic Cabling


11/19

Multimode (Data-Communications, less than 600 meters or 2,000 feet) 50/125: Increased demand with new laser transmitters

and 10Gig technology

62.5/125: Most common in US

Singlemode (Telecommunications, more than 600meters or 2,000 feet)

50 micron core (glass)245 micron coating (UV Acrylate)

125 micron cladding (glass)

Fiber Types

62.5 micron core (glass)125 micron cladding (glass)

245 micron coating (UV Acrylate)

8 - 9.3 micron core (glass)

245 micron coating (UV Acrylate)

125 micron cladding (glass)


12/19

Singlemode Fiber

Single mode fiber has a core diameter of 8 to 9microns, which only allows one light path or mode

Index of refraction


13/19

Fiber Buzz Words

S ingle Mode ( SM): Carries only a single ray of light (mode). Multi Mode ( MM): Carries multiple (colors) rays of light (modes). BIF: Bend Insensitive Fiber MIC: Multi-fiber Indoor Cable

Can be SM or MM OFN P : Optical Fibre Non-conductive Plenum OFN R : Optical Fibre Non-conductive Riser FTTP: Fiber To The P remise

FTTH: Fiber To The Home


14/19

What is FTTH & FTTP

FTTP: Fiber to the premise

FTTH: Fiber To The Home


15/19

Codes and standards

Plenum: The space that is used for air circulation in heating and airconditioning systems. Air return

Riser: Type of cable used in vertical building shafts with no air return OSP (Outside Plant): Direct buried, Aerial, Normally Shielded, Can be

Jell Filled or Dry Block Filled I/O (Indoor/Outdoor): Can be plenum or riser. They can run in outside

or inside environment. Tight or loose buffer

What does OFNR & OFNP stand for?1. OFNR: Optical Fiber Nonconductive Riser 2. OFNP: Optical Fiber Nonconductive Plenum


16/19

Optical Fiber

Core Glass or plastic with a higher index of

refraction than the cladding Carries the signal

Cladding Glass or plastic with a lower index of

refraction than the core Buffer

Protects the fiber from damage andmoisture

Jacket Holds one or more fibers in a cable


17/19

What is Zero Water Peak Fiber

Zero Water Peak fibers are single-mode fibers inwhich the stray Hydrogen atoms (H2O) are reducedsignificantly or eliminated, which improves signalloss, this frees up more wavelengths for high qualitytransmission. These fibers allow 50% morechannels by opening up the wavelength rangearound 1240 - 1400 nm.


18/19

Index of Refraction

When light enters a dense medium like glass or water, it slowsdown

The index of refraction (n) is the ratio of the speed of light invacuum to the speed of light in the medium

Water has n = 1.3 Light takes 30% longer to travel through it

Fiber optic glass has n = 1.5 Light takes 50% longer to travel through it


19/19

Passive - By Fadi Ghaoui, 20110809

Documents

Transcript of Passive - By Fadi Ghaoui, 20110809