摘要
Under a specified loss condition,the resonant mode in a three-turn lossy microfiber coil resonator exhibits periodic evolution among normal resonance,white-light cavity effect,and resonance mode splitting in response to alterations in the phase shift and coupling state.It exhibits normal resonance when the coupling state exceeds a threshold with specific loss.The white-light cavity effect is activated when the coupling state matches loss.The resonant phase bifurcates as the coupling state falls below the threshold.The excitation conditions for each resonant mode have been derived,and the critical coupling conditions exist for both normal resonance and mode splitting in the case of relatively small losses.
基金
supported by the Joint Fund Project(No.8091B042206)
the National Natural Science Foundation of China(No.61873064)
the National Defense Pre-Research Foundation of China(No.8922006150)
the Jiangsu Provincial Key Research and Development Program(No.BE2022139)
the Wuxi Key Research and Development Program(No.N20221003)。
