Intro broadband needs
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Intro – Broadband Needs. Consumer Choice…Today. Digital & IPG. On Demand. Data on TV. VoIP. 5 Mbps. 1.0 Mbps. 1.5 Mbps. Video on your cell. Customer Choice…Tomorrow. Any Content…Any Where…Any Time. HDTV & DVRs. Home Networking for Video, Voice and Data. Home Telepresence. IPTV.

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Intro – Broadband Needs

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Intro broadband needs

Intro – Broadband Needs

Consumer choice today

Consumer Choice…Today

Digital & IPG

On Demand

Data on TV


5 Mbps

1.0 Mbps

1.5 Mbps

Video on your cell

Customer choice tomorrow

Customer Choice…Tomorrow

Any Content…Any Where…Any Time


Home Networking for Video, Voice and Data

Home Telepresence

Global traffic growth



Global Traffic Growth

IP Traffic




One way fiber to the home

Less Expensive


Higher Carrying capacity

Less signal degradation

Light signals

Lowe Power

Digital Signals


Light weight

One way – Fiber to the Home

How fast is fiber optics

Copper wire (twisted pair) up to ~ 100 Mb/sec (short distances)

1,500 phone calls

2 TV channels

2 Bibles/sec

Coaxial cable (also copper) Up to ~1 Gb/sec (short distances)

15,000 phone calls

20 TV channels (> 200 with “data compression”)

20 bibles/second

Optical Fiber up to 50 Tb/s (50,000 Gb/s) (long distances)

0.78 billion phone calls

1 million TV channels

1 million Bibles/second

How “fast” is fiber optics?

Moving from copper to fiber






Optical networks, optimized for voice, video and data

19 Mbps - 1 Gbps +

Moving from Copper to Fiber…

Old networks, optimized for voice

24 kbps - 1.5 Mbps

Comparison fiber vs copper

Comparison Fiber vs Copper

Introduction to optical fibers

Introduction to Optical Fibers.

  • Fibers of glass

  • Usually 120 micrometers in diameter

  • Used to carry signals in the form of light over long distances

  • No repeaters needed.

Introduction cont

Introduction (Cont…)

  • Core – thin glass center of the fiber where light travels.

  • Cladding – outer optical material surrounding the core

  • Buffer Coating – plastic

    coating that protects

    the fiber.

Type of fibers

Type of Fibers

Optical fibers come in two types:

  • Single-mode fibers – used to transmit one signal per fiber (used in telephone and cable TV). They have small cores(9 microns in diameter) and transmit infra-red light from laser.

  • Multi-mode fibers – used to transmit many signals per fiber (used in computer networks). They have larger cores(62.5 microns in diameter) and transmit infra-red light from LED.

Total internal reflection in fiber

Total Internal Reflection in Fiber

Intro broadband needs


  • Refers to several different optical fiber architectures

  • Most Common terms:

    • Fiber to the node / neighborhood (FTTN)

    • Fiber to the building (FTTB)

    • Fiber to the home (FTTH)

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