The document summarizes optical computing and optical computers. It discusses the components of an optical computer like VCSEL, SLM, WDM and optical memory. It explains that an optical computer uses visible light or infrared beams rather than electric current to perform computations. Some advantages are that optical computing is simple but it has drawbacks like imperfections or dust causing interference. The future trends discuss the Indian government initiating photonic development.

1. GYAN VIHAR School of Engineering & Technology A Seminar On OPTICAL COMPUTERS Submitted to: - Submitted by: Mr. Naveen Hemrajani Sudhanshu Shekhar Head of the Department B.Tech. IV Year, Computer Science Engineering (VIII Semester)

2. COMPUTER OF 2010 OPTICAL COMPUTER

3. 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

4. OPTICAL COMPUTER

5. COMPONENTS OF OPTICAL COMPUTER Hard Disk CPU Cache Memory Main Memory Power Supply Screen

6. Optical Components for Computing VCSEL SLM WDM OPTICAL MEMORY

7. VCSEL

8. SLM (Spatial Light Modulator)

9. WDM (Wide Division Multiplexer)

10. OPTICAL FIBRE

11. An Optical Computer Powered by Germanium Laser

12. GERMANIUM LASER

13. 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.

14. ADVANTAGES . . . . .

15. 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

16. FUTURE TRENDS The Ministry of INFORMATION TECHNOLOGY has initiated a photonic development.

18. QUERY

19. THANKS …. FOR UR PATIENCE