Shayan FINAL1 Characterization of Thermal Phase Shifters ...
Transcript of Shayan FINAL1 Characterization of Thermal Phase Shifters ...
CharacterizationofThermalPhaseShiftersinaSiliconPhotonics
ProcessShayanReza
Major:ElectricalEngineeringVenturaCollege
Mentor:TakakoHirokawaFacultyAdvisor:ProfessorClintSchowDepartmentofElectricalandComputer
Engineering
?-Globaldatatrafficisexpectedtoincreasebyafactorof4.5from11EB(1018bytes) permonthin2017to49EBpermonthin2020
[Cisco]
Opticalfibers:
-Arefasterthanelectroniccables-Containalargerbandwidth
- Aremoreenergy-efficient
Why Optical Switches?
Research Project GoalsCharacterizingtheefficiencyofthermalphaseshifters-Determinehowmuchpowerisneeded
Identifyoptimalheaterstructures-Determinewhichdesignisthemostefficient
TestStructureStructureofDevice
Measuring Resistance of Heaters
-Tuningefficiency
Masood,A.,Pantouvaki,M.,LePage,G.,Verheyen,P.,VanCampenhout,J.,Absil,P.,VanThourhout,D.andBogaerts,W.(2013).Comparisonofheaterarchitecturesforthermalcontrolofsiliconcircuits.10th InternationalConferenceonGroupIVPhotonics.
Waveguide
-Minimizeopticalloss
Aligning Optical Fiber
R6
R5
R4
R3
R2
R1
R7
R8
R9
R10
R11
R12
Ohm’s Law:V=IR
-0.0015
-0.001
-0.0005
0
0.0005
0.001
0.0015
-4 -3 -2 -1 0 1 2 3 4
I(Amps)
V(Volts)
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
Resistance Measurements
Voltage Sweep from 0-5V for R3
-75
-65
-55
-45
-35
-25
-15
-5 1544 1545 1546 1547 1548 1549 1550 1551
OpticalPow
er(d
B)
Wavelength(nm)
0V
5V
10V
15V
Heater Efficiency at 1549.5 nm
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
01000 3000 5000 7000 9000 11000 13000 15000
OpticalPow
er(d
B)
ElectricalPower(W)
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
Conclusions & Future work
• Smaller heater geometries tend to generate more heat, which is efficient for the switch.
• Continue to test heaters of varying dimensions in order to find optimal heater structure for optical switch
Acknowledgements
Special thanks to my mentor, Takako Hirokawa for her guidance this summer as well as to my Faculty Advisor Professor Clint Schow for his support. I would also like to thank the IEE for funding my research.