GYAN VIHARSchool of Engineering & Technology

ASeminar

On

OPTICAL COMPUTERS

Submitted to: - Submitted by:Mr. Naveen Hemrajani Sudhanshu ShekharHead of the Department B.Tech. IV Year,Computer Science Engineering (VIII Semester)

COMPUTER OF 2010

OPTICAL COMPUTER

• Optical computing describes a new technological approach for constructing computer’s processors and other components.

• An Optical Computer is a hypothetical device that uses visible light or infrared beams, rather than electric current, to perform digital computations.

OPTICAL COMPUTER

OPTICAL COMPUTER

COMPONENTS OF OPTICAL COMPUTER

• Hard DiskHard Disk

• CPUCPU

• Cache Memory Cache Memory

• Main MemoryMain Memory

• Power SupplyPower Supply

• ScreenScreen

Optical Components for Computing

• VCSELVCSEL

• SLMSLM

• WDMWDM

• OPTICAL MEMORYOPTICAL MEMORY

VCSEL

SLM (Spatial Light Modulator)

WDM (Wide Division Multiplexer)

OPTICAL FIBRE

An Optical ComputerAn Optical ComputerPowered byPowered by

Germanium LaserGermanium Laser

GERMANIUM LASER

Concept of Picosecond

BY

NASA

Computers used to work in millisecond(1,000ths), then moved up to microseconds(millionths),and now are approaching nanoseconds(billionths) for logic operations and PICOSECOND(TRILLIONTHS) for the switches and gates in the chip.

ADVANTAGES . . . . .

Optical Computing using a coherent source is simple to compute and understand, but it has many drawbacks like any imperfections or dust on the Optical Components will create unwanted interference pattern due to scattering effects.

DRAWBACKS

FUTURE TRENDS

• The Ministry of INFORMATION TECHNOLOGY

has initiated a photonic development.

QUERY

THANKS …. FOR UR

PATIENCE