Multi channel fabry perot etalon
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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.

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Multi-Channel Fabry-Perot Etalon

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Multi channel fabry perot etalon

Multi-Channel Fabry-Perot Etalon

E. Dagher, R. Liu, J. Vaillancourt


Outline

Outline

  • Objectives

  • Division of Work

  • Background

  • Mirror Fabrication

  • Cavity Fabrication

  • Biomaterials

  • Sample Preparation

  • Test Procedure

  • Results

  • Timeline

  • Future Work

  • Conclusion


Objective

Objective

To design and build a proof of concept experiment for a novel high sensitivity biosensor based on a Fabry-Perot cavity


Multi channel fabry perot etalon

Division of Work

  • Initial Design Simulations and Evaluation

    • Sims Approach Research and Evaluation

    • MS Excel

  • Biomaterial Sample Prep

Rui:

Jarrod:

  • Fabricate device for testing

    • Obtain materials

    • Assemble the prototypes

  • Build test setup

Emile:

  • Write test programs to acquire data

    • Control instruments

    • Demodulate the signal

    • Graph results

    • Automate the testing/graphing procedure


Multi channel fabry perot etalon

R=.3

R=.9

R=.5

λm+1

λm-1

λm

  • Important Properties of a F-P Cavity:

  • Free Spectral Range:

  • Finesse:

  • Resonant Condition: where m=1,2,3 …

Background


Multi channel fabry perot etalon

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Air

Air

Mirrors

Glass

Glass

Glass

Glass

Glass

Glass

BIO Material


Multi channel fabry perot etalon

Mirror

Mirror

Mirror

Mirror

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Glass

Air

Air

Air

Air

Glass

Glass

Glass

Glass

BIO Material


Multi channel fabry perot etalon

Mirror Fabrication

  • Mirrors 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


Multi channel fabry perot etalon

Mirror Fabrication

Glass

Titanium

Gold


Multi channel fabry perot etalon

Mirror Testing

Transmission @ 1.55µm

Glass: 87%

10Å Ti / 40Å Au: 47%

10Å Ti / 70Å Au: 18%

10Å Ti / 40Å Au

10Å Ti / 70Å Au


Multi channel fabry perot etalon

Cavity Fabrication


Multi channel fabry perot etalon

Cavity Fabrication


Multi channel fabry perot etalon

Cavity Fabrication


Multi channel fabry perot etalon

Verification of Cavity


Multi channel fabry perot etalon

Cavity Fabrication

  • Reason for Failure:

  • Only 150Å of gold

  • Missing the “sticking layer”

  • Solution:

  • Use a sticking layer

  • Can be Ni, Ti, Cr


Biomaterials

Biomaterials

  • Biomaterials in cavities:

    • Protein G

    • IgG

    • Fab

  • Same Concentration for all experimental setups


Sample preperation

Sample Preperation

2

1


Multi channel fabry perot etalon

Coating Biomaterials

Glass

Protein G

IgG

Protein G

IgG

Glass

Gold


Cavity setup

Cavity Setup


Multi channel fabry perot etalon

Testing Block Diagram

GPIB/IEEE Cable

PC/Matlab

Single Mode Fiber

Micron Optics si720

Optical Sensing Analyzer

Detected light

Power Input

Test Setup


Matlab gui interface

Matlab GUI Interface

Start

Folder/File location to save data

Start/Stop Wavelengths

Figure


Test automation block diagram

Test Automation Block Diagram

Run Matlab GUI

Locate File/Folder Location

to save data

Start/Stop Wavelengths

-Set the Start/Stop Wavelengths

on Optical Analyzer

-Start Sweeping through wavelengths

-Get data results and save them

in specified folder

Start

Show Results


Timeline

Timeline


Multi channel fabry perot etalon

Future Work

1. Multi-channel Fabry-Perot cavity waveguide structure.

Mirrored Ends

Multiple Channels

Silicon Waveguide

Silicon Substrate

Silicon substrate


Multi channel fabry perot etalon

Future Work

1. Multi-channel Fabry-Perot cavity waveguide structure

2. Integrated with microfluidics

Biomaterials

Fluid Cavity

Polymer

Cap


Multi channel fabry perot etalon

Waveguide with microfluidics

  • Benefits:

  • Reduced device size

  • Can create more channels for biomaterials

  • Enables mass production

  • Uniform device size

Biomaterials


Multi channel fabry perot etalon

Conclusion

  • Fabrication of Cavities is feasible

  • Goal has been reached

  • Introduce mirror reflectivity as a variable when testing


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