Presentation on Presentation

IMMERSE 2015

4-29-15

Outline• Technical presentations versus other• Using PowerPoint Slides

• Backgrounds, colors, fonts, sizes• Organization• Too much/too little information

• Content• Enough background information for your audience• Avoid equations and gory details• Emphasize big picture and conclusions

• Presenting• Try to be natural – lots of eye contact• Don’t read slides• Don’t over/under prepare• Don’t over/under explain• Don’t go crazy with the laser pointer

Technical Presentation versus Other Presentations

Technical Presentation– You do all the

talking until someone asks a question

– Delivering scientific results

– Can have “personality” but should maintain a degree of professionalism

– PowerPoint

Church Presentation– Usually do a

fraction of talking (5% R.S.; 10% priesthood)

– Include stories, feelings, personal experiences

– More personable– You ask the

questions

PowerPoint Presentation Guidelines

Can’t Go Wrong Avoid

Background Plain White Distracting backgrounds

Fonts Ariel Anything distracting

Text Size Bigger than 18 point Smaller than 18 point (16 point)(14 point) (12 point)

Colors Lots of contrast Little contrast betweenbetween text and text and background -background or distracting

PowerPoint Presentation GuidelinesCan’t Go Wrong Avoid

Background Plain WhiteDistracting backgrounds

Fonts Ariel Anything distracting

Text Size Bigger than 18 point Smaller than 18 point

(14 point) (12 point)

Colors Lots of contrast Little contrast between

between text and text and background -

background or distracting

PowerPoint Organization

• Title Page• Outline – can be substituted for

introduction slides• Body• Summary slide outlining conclusions

What to include on a PowerPoint Slide

Include Avoid

Graphs Long Derivations

Diagrams/Pictures Computer Code

Important Equations Lists of measurements

Key measurements

Conclusions

Two Pump Phase Matching

Single Pump Configuration Double Pump Configuration

fp ( f 0 )Limited tunability

Converted signalLimited Tunability

f1 f2

frequency

fc = 2*fp-fin

PumpInput signal

f0 (0)

fp1 fp2

fs1 fs2

Dummy Pump

Input signal(Pump1)

Can be tuned throughout the whole bandwidth

Dummy signal

Converted signalCan be tuned throughout

the whole bandwidth

fp1 = fp2

fs1 = fs2

f0 (0)

• Middle of the two pumps (input signal and dummy pump) needs to be ~ 0

We tune dummy pump wavelength to get input wavelength tunability• Middle of the dummy signal and the converted signal needs to be close to 0

We tune dummy signal wavelength to get input wavelength tunability• tunability is limited by EDFA (~ 25 nm)

D f1 = f2

fc = fin + fp_d - fs_d

fp_dfs_d

fin fc fin fc

Y. Wang, ECOC, Sep. 2005

0: center wavelength

a

w

Basic Principle: Slow Light Engineering

Kramers-Kronig

n

wwS

a

w

g

0 wS

a

wwS

Spectral Hole in Absorption

Sharp Gain Spectra

Kramers-Kronig

wS

n

w

n

w

1g

nnc

Snv

c k

1

g

n

c kGroup Velocity v cn

n

Videos and Animation

• Can be extremely effective• Embed and make sure it’s bulletproof• Don’t leave video looping

Technical Content

Background– Adjust to your audience– What do you need to know to understand

significance of what I’m talking about– Why should you care– Why what I’m doing is so great

Background slides could range from 1 to most of the talk depending on your audience

Technical Content

Things people like • Big pictures• Summary• Results• New Stuff• Simple

explanations

Things people don’t like

• Thinking too hard• Gory details• Repetition• Endless equations• Meaningless

information• Endless talking

Mental state of most audience members: sleepy, lethargic, bored, distracted, defensive

The Act of Presenting

• Try to be natural – lots of eye contact• Don’t read slides• Don’t over/under prepare• Don’t over/under explain• Don’t go crazy with the laser pointer

Acting Natural, Lots of Eye ContactExample

4) End Coupling of Solid and Hollow Core Waveguides

3) Intersection of Solid and Hollow Core Waveguides

5) Integration of Macroscopic Fluid Reservoirs

2) Bends and Intersections of Fluid Channels

1) Hollow Core Waveguides

Integrating Microfluidics and Hollow Waveguides

Don’t Read SlidesExample

SIM – Key to the Operation

Electrons created during ionization are collected at N+ region.

Holes created during ionization are directed towards the P+ substrate instead of back towards the current source

→ avoid carrier recombination and gain suppression

N type

High electric field

Metal SiO2

P type

+ Voltage(Anode)

Schottky ContactMetal

injected electron

Current Source

Fig. 4 Different carrier transportation routes within the device

Over/Under PrepareExample

Anti-Resonant Reflecting Optical Waveguides

Substrate

n3

n3

n2

n2

core,n1d0k

kz

kx

• First proposed by Dugay et al. (1986)• High-index cladding: antiresonant

Fabry-Perot cavity in transverse

direction• Low-loss propagation in z-direction• Single mode• Additional layers reduce loss

1) Hollow Core Waveguides

Over/Under ExplainExample

Waveguide widthTop layer thickness

< 10

0

0.5

1

1.5

2

2.5

0 5 10 15 20 25

Etch Time [hours]

Le

ng

th o

f S

U8

etc

he

d [

mm

]

60 C50 C

SU-8 sacrificial core

• Rectangular core defined by photolithography

• Core removal: H2SO4 + H2O2

Going Crazy with the Laser PointerExample

Conclusions

• Being well spoken in technical presentations extremely important

• How strangers see you• Practice, practice, practice . . .• Watch other people and decide what

you like, what you don’t• Let’s learn from each other . . .