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Ultrafast all-optical switching using signal flow graph for PANDA resonator
Mahdi Bahadoran1, Jalil Ali, Preecha P Yupapin
1Institute of Advanced Photonics Science, Nanotechnology Research Alliance, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.
Applied Optics
|May 15, 2013
Summary
This study explores light dynamics in PANDA ring resonators, revealing bistable switching capabilities without optical pumping. The findings highlight potential for fast optical signal processing and switching in integrated circuits.
Area of Science:
- Photonics and Optical Engineering
- Nonlinear Optics
- Integrated Optics
Background:
- Ring resonators are fundamental in photonics for various applications.
- Understanding nonlinear optical phenomena is crucial for advanced optical devices.
- Silicon-on-insulator (SOI) platforms offer advantages for integrated photonic circuits.
Purpose of the Study:
- To investigate the bifurcation behavior of light in a PANDA ring resonator.
- To analyze nonlinear optical phenomena like bistability and Ikeda instability.
- To derive optical transfer functions and simulate system performance.
Main Methods:
- Utilized the signal flow graph (SFG) method to derive optical transfer functions.
- Simulated transmission curves for bistability and instability.
- Investigated the PANDA Vernier system with four couplers on an SOI platform.
Main Results:
- Successfully derived transmission curves for bistability and instability using the SFG method.
- Demonstrated closed-loop bistable switching by varying resonant mode numbers.
- Achieved minimum switching times of 1.1 ps (through-port) and 1.96 ps (drop-port).
- The system operates without requiring an optical pumping component.
Conclusions:
- The SOI-PANDA Vernier resonator exhibits controllable bistable switching.
- The system is suitable for optical signal processing and fast switching applications.
- The derived SFG method provides an effective approach for analyzing such nonlinear systems.
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