%A Zhi-Sen Jiang(蒋之森), De-Jiao Hu(胡德娇), Lin Pang(庞霖), Fu-Hua Gao(高福华), Ping Wang(王平) %T Fabry-Pérot resonance coupling associated exceptional points in a composite grating structure %0 Journal Article %D 2018 %J Chin. Phys. B %R 10.1088/1674-1056/27/5/054201 %P 54201-054201 %V 27 %N 5 %U {https://cpb.iphy.ac.cn/CN/abstract/article_120619.shtml} %8 2018-05-05 %X The exceptional point (EP) is a significant and attractive phenomenon in an open quantum system. The scattering properties of light are similar to those in the open quantum system, which makes it possible to achieve EP in the optic system. Here we investigate the EP in a Fabry-Pérot (F-P) resonant coupling structure. The coupling between different types of F-P resonances leads to a near zero reflection, which results in a degeneration of eigenstates and thus the appearing of EP. Furthermore, the multi-wavelength EPs and unidirectional invisibility can be achieved which may be used in integrated photonics systems.