SILICON PHOTONICS

SUBMITTED TO:-MISS VANITA YADAV

SUBMITTED BY:-NIHARIKA(CSE)

DATA TRANSFER MODE

Electrons (ELECTRONIC)

eg- copper wires

Photons(PHOTONIC)

eg- Optical fibres

PHOTONS OVER ELECTRONS

electron

photon

• Photons unlike electrons

have zero mass

• Two photons coexist

together.

• Electrons unlike photons are

physical ,hence more the circuit

is complex, the more power

It requires.

ELECTRONIC CIRCUIT

A simple circuit layout.

What if the circuit is more complex?

MORE POWER CONSUMPTION!!!DATA LOSS!!INCREASED TIME!!

So, why not use photons as data transfer mode instead of electrons?

PROBLEM WITH SILICON:-

• Silicon emits heat instead of photons.

• Integration of laser source in wafer.

SOLUTION:-

InP lasers are used as light source with silicon wafer.

WHY SILICON?

Silicon shows the property of total internal

reflection. Hence silicon covered with Silicon

dioxide traps light perfectly.

SILICON PHOTONICS?

Silicon photonics is an evolving technology in

which data is transferred among computer chips

by optical rays. Optical rays can carry far more

data in less time than electrical conductors.

These devices can be built using commercial

CMOS chip fabrication facilities.

Generally a silicon integrated nanophotonics is capable of integrating a photodetector and modulator fabricated side by side with silicon transistors. Silicon nanophotonic circuits are interconnected with nine levels of yellow metal wires.

MAIN BUILDING BLOCKS

PROCESS-1

SOURCE:-HARWAREZONE.COM

PROCESS-2

SOURCE:-HARDWAREZONE.COM

ADVANTAGE OF SILICON

PHOTONICS

High data transfer = high cost

= high power consumption

=very complex circuitry

Photonics +Electronics can together enable

solutions that can achieve higher degree of data

transfer with low cost.