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Chin. Phys. B, 2018, Vol. 27(5): 054201    DOI: 10.1088/1674-1056/27/5/054201
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Fabry-Pérot resonance coupling associated exceptional points in a composite grating structure

Zhi-Sen Jiang(蒋之森)1,2, De-Jiao Hu(胡德娇)3, Lin Pang(庞霖)1,2, Fu-Hua Gao(高福华)1,2, Ping Wang(王平)1,2
1 Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, China;
2 College of Physical Science and Technology, Sichuan University, Chengdu 610065, China;
3 Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
Abstract  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.
Keywords:  exceptional point      Fabry-Pérot resonance      metallic grating  
Received:  23 December 2017      Revised:  15 January 2018      Published:  05 May 2018
PACS:  42.15.Eq (Optical system design)  
  42.25.Fx (Diffraction and scattering)  
  42.79.Dj (Gratings)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.61377054 and 61675140).
Corresponding Authors:  Lin Pang     E-mail:  lin.lpang@gmail.com

Cite this article: 

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) Fabry-Pérot resonance coupling associated exceptional points in a composite grating structure 2018 Chin. Phys. B 27 054201

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