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Stability Formulation for Integrated Opto-mechanic Phase Shifters
1Electrical and Electronics Engineering Department, Middle East Technical University, Ankara, 06800, Turkey.
Scientific Reports
|February 2, 2018
Summary
Opto-mechanical phase shifters are analyzed for stability. Double-clamped beams are suitable for functional devices, unlike unstable cantilever designs, offering insights into fabrication error tolerance.
Area of Science:
- Opto-mechanics
- Photonics
- Nanotechnology
Background:
- Opto-mechanical phase shifters are crucial components in photonic integrated circuits.
- Understanding their stability is essential for reliable device performance and fabrication.
- Existing designs face challenges in achieving stable phase shifts.
Purpose of the Study:
- To thoroughly investigate the stability of opto-mechanical phase shifters.
- To propose a formula for determining the physical limitations of these devices.
- To assess the impact of fabrication errors on device output.
Main Methods:
- Iterative analysis of cantilever and double-clamped beam configurations.
- Numerical calculations involving effective index modifications and opto-mechanical movements.
- Evaluation of stability under varying input power, device length, and waveguide separation.
Main Results:
- A formula for physical limitations of opto-mechanical phase shifters has been proposed.
- Stability is strongly dependent on input power, device length, and waveguide separation.
- Cantilever beams are found to be unstable for achieving a 180° phase difference.
- Double-clamped beam structures demonstrate suitability for functional devices.
Conclusions:
- Double-clamped beam opto-mechanical phase shifters are viable for practical applications.
- The proposed formulation aids in predicting device response to fabrication errors.
- Ideal operating conditions for device durability and phase control have been identified.
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