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Applications of Micro Electro Mechanical Systems (MEMS). Jobin Philip. Introduction . IC invention Large number of transistors on single silicon chip Interconnected to functional circuits. Micro-fabricated Membrane Mirrors. 12 mm in diameter Less than 1um in thickness.
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Applications of Micro Electro Mechanical Systems(MEMS) Jobin Philip
Introduction • IC invention • Large number of transistors on single silicon chip • Interconnected to functional circuits
Micro-fabricated Membrane Mirrors • 12 mm in diameter • Less than 1um in thickness
Micro-fabricated Membrane Mirrors • Optical Switching • High optical efficiency • Good potential for aberrations correction • Coupling efficiency of 3000 interconnections
2x2 Optical Switch Cross State Bar State
Segmented Mirrors • Space Optical Telecommunication • Reliable, Small in size, Light in weight, & Easy to fabricate • Air Turbulence causes optical aberrations • Quick response time, therefore able correct optical aberrations
Down ribbons Incident Diffracted Diffracted Incident Reflected Up ribbons 1/4 l Ribbons Oth Mode +1st Mode +3rd Mode Grating Light Valve (GLV) Silicon Light Machines: http://www.siliconlight.com
Prism Lens GLV Focal Plane Screen Color Wheel Optical Input GLV Projection System • Digital Projection System using Grating Light Valve • If pixel is “off”, light is reflected straight off GVL into the absorbing screen • If pixel is “on”, light is diffracted at an angle, propagating through the lens to the focal plane