该器件的结构原理是基于一个波导管和一个环形共振器之间的耦合，并用时域有限差分法设计和验证了该结构。

The proposed structure mechanism is based on coupling between a waveguide and a ring resonator. This structure is designed and verified by finite-difference time-domain (FDTD) computation.

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本文基于环形共振器，提出了一种新型的合适带宽的二维光子晶体L形弯曲波导器件。

We propose a new type of two-dimensional (2d) photonic crystal L-shaped bent waveguides based on ring resonators with an acceptable bandwidth.

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