8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

1/17

PRESENTED BY:

K.NITIN REDDY K.PADMAVATHI

III/IV B.TECH, ECE III/IV B.TECH,ECE

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

2/17

CONTENTS:y INTRODUCTIONy WHAT ARE MEMS?y ARCHITECTURE OF OPTICAL ROUTERy ROUTER DESIGN ISSUES

>Filter design>Electrostatic actuator design>Circulators and couplers>Optical switch

y ADVANTAGESy CHALLENGESy APPLICATIONSy CONCLUSION

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

3/17

INTRODUCTION

yWhat is a router?

yNeed of optimum utilisation of networkresources

yPossible solutions to the problems

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

4/17

Performance trends

Router capacity

x2.2/18 months

DRAM access rate x1.1/18 m

Moores lawx2/18 m

1

10

100

1000

1990 1992 1994 1996 1998 2000 200

Relative performance increase

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

5/17

WHATARE MEMS?yMEMS is the integration of sensors ,

actuators and electronics on common

silicon substrate through microfabricationtechnology.

ySystems-on-a-chip

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

6/17

SYSTEM ARCHITECTURE OF OPTICAL ROUTER

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

7/17

ROUTERDESIGN ISSUESy FILTERDESIGN

>Different availabletechnologies

>Proposed Structureof Bragg mirrors

>Materials forrealizing bragg

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

8/17

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

9/17

y

ELECTROSTATICACTUATORDESIGN>Objective

>How is it achieved?

>S

pring constant K=2ehw3

/ l

3

>FP=V2 (Awh /2g2 )

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

10/17

y CIRCULATORSAND COUPLERS

>Faraday rotator

>birefringence elimination

>splitting pulses

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

11/17

Optical router

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

12/17

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

13/17

ADVANTAGESy Among many benets ofMEMS technology that were

Reviewed as core success factors,the ones that stand

Out are:

y (1)arrayability,which is the term that we use for theability to place tiny devices in large-scale arrays;

y (2)recongurability, i.e.theabilitytorecongure

theoptical properties,spatiallyandtemporally,

y Vialocalized micro-actuation and/ordeformation;

and

y (3)nanoscale precision control of positionandalign-

ment for microscaledevices,which we willrefer

toasnanopositioning.

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

14/17

Optical switch

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

15/17

APPLICATIONSy PETABIT-PER-SECOND ROUTERS

y RESTORATION IN EVENTOFFIBRE BREAKS

y NETWORKMONITORING

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

16/17

Challenges in MEMS technologyy Advanced Simulation and modeling tools

y Packaging needs improvement

y Though started in 1960s, the amount ofR&Dinvestment has begun only in the past 10 years

y Multidisciplinary study

8/7/2019 DESIGN ASPECTS OF OPTICAL ROUTER USING MEMS

17/17

CONCLUSIONy The future information technology requires faster

and smarter communication networks,which may only

Be obtained through all opticalnetworking withmoreSophisticated opticalfunctionalities,suchas intelligent

Opticalsignalprocessing and adaptiveoptics.Integra-

tionofoptical deviceswithMEMStechnology will

Accomplish this goal if they are designed with well-

dened opticalfunctionality and theproperuse of ma-

terials and processes.