Richard UCSBNano 2008 03mar 29d
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Transcript of Richard UCSBNano 2008 03mar 29d
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Nanotechnology and optical computernetworks using waveguides and lasers
Richard Moore, RET Fellow
Demis John, MSEE/Doctoral candidate MentorDr. Blumenthal, Principal Investigator
Summer 2007 RET Program UCSB
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Moores 1st Law
Moores law says that the amount of space
needed to install a transistor on a chip will
shrink by half every 18 months. This is the good news
N.b., Gordon Moore, founder of Intel Corporation
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My task in the RET Program
Try to create a macro-level analogy for
the nano-level technology I saw at UCSB
Design three labs based on1. Light going through media of different optical
density to cause the formation of nano-sized
lasers
2. Show that light has different wavelengths
3. Create a waveguide that light can travel
through and stay within
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1st Lab
Observation: Light going through media of
different optical density to cause the
formation of nano-sized lasers Lab: Slinky vs. Snaky Lab
Purpose: To show how waves behave
when different media are encountered
Analogy: Building light up inside a laser by
getting it to bounce back and forth
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Slinky and Snaky
Ready
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Slinky and Snaky
Set
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Slinky and Snaky
Go
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Single Slinky
Generation of a transverse wave
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Single Snaky
Reflection of a transverse wave
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2nd Lab
Observation: Show that light has different
wavelengths
Lab: Wavelength lab, or color lab Purpose: To show, via Youngs
interference demonstration, that light of
different colors has different wavelengths
Analogy: Using infrared light in Indium
Phosphide waveguides
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Get liquid graphite to coat slides
(They only ship this paint to schools)
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Get Slides and Blades
Teacher slices coated slides
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Coated slide is sliced
Two blades, side by-side, cut twin lines
Three blades, with center one raised, cut
wider line
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Colored film material
Using two colors of film side by side can
rapidly show that the wavelengths of two
different colors of light are different sizes
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Youngs demonstration is ready
Each color of film transmits a different
wavelength of the visible light
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3rd Lab
Observation: A waveguide that light can travelthrough and stay within for use on the internet
Lab: Waveguide lab, or Jell-O lab
Purpose: To create a macro model of light thatcan stay within a flexible and inexpensivewaveguide, or optical cable, by staying moreoblique than the critical angle in the optically
denser material Analogy: Infrared light in the Indium Phosphide
waveguide
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Preparing cake pan for Jell-O
Line pan with saran wrap so Jell-O wont
stick
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Preparing the Jell-O
Boiling the water
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Preparing the Jell-O
Cooking in class
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Preparing Photo cell on 3 x 5 card
Mount through holes near edge of card
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Photo cell and VOM
With just ambient light
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Photo cell and VOM
With ambient light blocked
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Photo cell and VOM
With red laser light
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Jell-O as waveguide
Slicing to form sections with smooth sides
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Jell-O as waveguide
Slicing to form sections with smooth sides
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Jell-O as waveguide
Refraction in Jell-O
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Jell-O as waveguide
Refraction & Reflection at slice
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Jell-O as waveguide
Transmitting through a straight section
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Jell-O as waveguide
Bending through a curve off a smooth side
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Jell-O as waveguide
Loosing the internal beam on a roughened
surface
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Goal of refraction activity
Solve for the Jell-Os index of refraction
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Refraction Activity
Taking measurements
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Measuring optical density
One section of Jell-O
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Measuring optical density
Two sections of Jell-O
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Indium Phosphide
A real waveguide made in the clean room
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