C B KORE POLYTECHNIC CHIKODI

Topic : FIBER OPTIC COMMUNICATION

BY: SHARVANI MUSANDI

VI sem EC

VANDANA DESAI

VI sem EC

BRIEF FLOW OF THE PRESENTATION

1. Introduction2. Construction of optical fiber3. Working principle4. Fiber optic configuration5. Working of optical fiber6. Advantages of Optical fiber7. Application of fiber optics8. Reference

OPTICAL FIBER

CAUSES FOR THE CREATION OF THE OPTICAL FIBER----- Man’s HUNGER

Lastly optical fiber’s were invented to satisfy the Man’s hunger for communication

CONSTRUCTION OF OPTICAL FIBER

Core

Cladding

Buffer coating

TOTAL INTERNAL REFLECTION When light travelling in an optically dense medium hits a boundary at an angle larger than the "critical angle" for the media, the light will be completely reflected. This is called total internal reflection. Fiber optic cables use total internal reflection inside the optical fiber.

TOTAL INTERNAL REFLECTION

FIBRE OPTIC CONFIGURATIONSINGLE MODE AND MULTI

MODE OPTICAL FIBER

STEP INDEX FIBER

The refractive index of core is constant

The refractive index of cladding is constant

The refractive index of cladding is slightly lower than that of core

GRADED INDEX FIBER

Refractive index of core decreases smoothly from the centre to the outer edge

Refractive index of cladding is constant

WORKING OF OPTICAL FIBER

Light Transmission

ADVANTAGES Much higher bandwidth

Thousands of channels can be multiplexed together over one strand of fiber

Less expensive

Higher carrying capacity

Less signal degradation

Light signals

Digital signals

Safety

Non-flammable

Lightweight

Flexible

ADVANTAGES

The optical fiber has following advantages over twisted -pair and coaxial cable.

• Resistance to noise• Huge bandwidth• Higher signal carrying capacity

APPLICATIONS

• Medical

• Military

• Electronics

IBM microprocessors

SOURCE::WWW.FOA.ORG.IN

Fiber optics( Techician’S manual)By Jim Hayes

Data , voice & Video cablingBY Paul Rosenberg

ANY QUESTIONS ?