研究目的
Investigating the control and engineering of Fano resonances and electromagnetically induced transparency (EIT)-like phenomena in a quasi-cylindrical microresonator (QCMR) photonic system for applications in opto-electronic devices, light delay and storage, high sensitivity sensors, and quantum information processors.
研究成果
The research demonstrates a robust method for controlling and engineering Fano and EIT-like resonances in a QCMR photonic system through displacement tuning. The ability to have two different mechanisms inducing Fano resonances work on the same mode simultaneously is a significant finding. This platform holds potential for applications in optical switching, slow light, and sensitivity-enhanced sensing.
研究不足
The study is limited to the specific configuration of the QCMR-microfiber coupling system. The robustness of the system against external perturbations is highlighted, but potential limitations in scalability and integration with other photonic devices are not discussed.
1：Experimental Design and Method Selection:
The study involves constructing a robust QCMR-fiber coupling platform to selectively excite high Q localized axial modes in a QCMR. The methodology includes displacement tuning by vertically and horizontally moving the resonator to achieve and control EIT-like and Fano resonances.
2：Sample Selection and Data Sources:
A high Q QCMR is fabricated using a fiber fusion splicer. The resonator is coupled with a microfiber to input and output light from a tunable laser.
3：List of Experimental Equipment and Materials:
Equipment includes a commercial fusion splicer (Fujikura FSM-40S), tunable laser (New Focus, TLB-6728), polarization controller, InGaAs detector (Thorlabs PDA 10CF-EC), and an OSC.
4：Experimental Procedures and Operational Workflow:
The QCMR is moved vertically and horizontally to adjust coupling conditions, and the transmission spectrum is monitored to observe changes in EIT-like and Fano resonances.
5：Data Analysis Methods:
The transmission spectra are analyzed to study the evolution of EIT-like and Fano resonances, with theoretical models provided to explain the observed phenomena.
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