Multilayer symmetrical metamaterial capable of generating Fano resonance enhancing phenomenon and frequency tunable phenomenon

摘要: The invention provides a kind of multilayer symmetrical metamaterial capable generating Fano resonance enhancing phenomenon and frequency tunable phenomenon. Through the fact that rectangular crystal lattice arrangement is used in cell array (namely, on surface metamaterial, cycle length horizontal direction not equal to perpendicular direction), electric dipole enhanced, interacts with strong magnetic transmission spectrum steep asymmetrical harmonic peak achieved, therefore technical problem shift intervals resonant wave must be far larger than cavity bandwidth solved, wavelength resolution sensitivity exploration conducted refractive index change living beings by are improved. quality factor structure increases along increase or direction. Meanwhile, reduces increasing (blue shift), tuning can achieved.