multi-channel fabry-perot etalon
DESCRIPTION
Multi-Channel Fabry-Perot Etalon. E. Dagher , R. Liu, J. Vaillancourt. Outline. Objectives Division of Work Background Mirror Fabrication Cavity Fabrication Biomaterials. Sample Preparation Test Procedure Results Timeline Future Work Conclusion. Objective. - PowerPoint PPT PresentationTRANSCRIPT
•Objectives
•Division of Work
•Background
•Mirror Fabrication
•Cavity Fabrication
•Biomaterials
•Sample Preparation
•Test Procedure
•Results
•Timeline
•Future Work
•Conclusion
To design and build a proof of concept experiment for a novel high sensitivity biosensor based on a Fabry-Perot cavity
Division of WorkDivision of Work• Initial Design Simulations and Evaluation
o Sims Approach Research and Evaluationo MS Excel
• Biomaterial Sample Prep
• Fabricate device for testingo Obtain materialso Assemble the prototypes
• Build test setup
Write test programs to acquire data◦ Control instruments◦ Demodulate the signal◦ Graph results◦ Automate the testing/graphing procedure
Rui:
Jarrod:
Emile:
Important Properties of a F-P Cavity:
• Free Spectral Range:
• Finesse:
• Resonant Condition: where m=1,2,3 …
mm
nL 1
2
2
R
RF
1
R=.3
R=.5 R=.9
λm λm+1λm-1
BackgroundBackground
nLm m 2
Glass Glass Glass Glass
Glass Glass
Mirrors
Glass
Glass
Air
Glass Glass Glass Glass
Glass Glass
Glass
Glass
Air
BIO Material
Glass Glass Glass Glass Glass
Glass Glass
AirAir
Mirror Mirror
BIO Material
Glass Glass Glass Glass Glass
Glass Glass
AirAir
Mirror Mirror
Mirror FabricationMirror FabricationMirrors will be formed using AJA 7000 Sputtering System
• Many metal coatings available• Au, Ag, Al, Ti, Ni, Cr• Low pressure for high quality films• Precise control of the thickness
Mirror FabricationMirror Fabrication
GlassTitanium
Gold
Mirror TestingMirror Testing
Transmission @ 1.55µm
Glass: 87%
10Å Ti / 40Å Au: 47%
10Å Ti / 70Å Au: 18%
10Å Ti / 40Å Au
10Å Ti / 70Å Au
Cavity FabricationCavity Fabrication
Cavity FabricationCavity Fabrication
Cavity FabricationCavity Fabrication
Verification of CavityVerification of Cavity
Cavity FabricationCavity Fabrication
Reason for Failure:•Only 150Å of gold
• Missing the “sticking layer”
Solution:• Use a sticking layer
• Can be Ni, Ti, Cr
•Biomaterials in cavities:•Protein G•IgG•Fab
•Same Concentration for all experimental setups
Coating BiomaterialsCoating Biomaterials
Glass
Protein G
IgG
Glass Protein GIgG
Gold
PC/Matlab
GPIB/IEEE Cable
Micron Optics si720
Optical Sensing Analyzer
Test Setup
Single Mode Fiber
Testing Block Diagram
Power Input Detected light
Start
Folder/File location to save data
Start/Stop Wavelengths
Figure
Run Matlab GUI
Locate File/Folder Locationto save data
Start/Stop Wavelengths
Start
-Set the Start/Stop Wavelengths on Optical Analyzer
-Start Sweeping through wavelengths
-Get data results and save them in specified folder
Show Results
30-Jan
6-Feb
13-Feb
20-Feb
27-Feb
5-Mar
12-Mar
19-Mar
26-Mar
2-Apr
9-Apr
16-Apr
23-Apr
30-Apr
7-May
14-May
Literature Review
Simulations
Prepare for Report I and Presentartion
Procure Raw Materials
Form Mirrors and Assemble Cavity
Write Code for Testing
Build Test Set up and Preform Experiments
Prepare for Report II and Presentation
Data Analysis / Retest
Prepare Final Report and Presentation
Future WorkFuture Work
1. Multi-channel Fabry-Perot cavity
waveguide structure.
Silicon Substrate
Silicon Waveguide
Multiple Channels
Mirrored Ends
Silicon substrate
Future WorkFuture Work1. Multi-channel Fabry-Perot cavity
waveguide structure
2. Integrated with microfluidics Biomaterials
Fluid Cavity
PolymerCap
Waveguide with Waveguide with microfluidicsmicrofluidicsBenefits:• Reduced device size
• Can create more channels for biomaterials
• Enables mass production
• Uniform device sizeBiomaterials
• Fabrication of Cavities is feasible
• Goal has been reached
• Introduce mirror reflectivity as a variable when testing
ConclusionConclusion