The invention provides a method for amplifying a corneal scattered signal based on a phononic crystal resonance technology. The corneal elastic modulus is measured by detecting a Brillouin scattered signal, phononic crystal structure signal resonance is adopted for amplifying the weak Brillouin scattered signal in the cornea, and the point lies in that the Brillouin scattered signal can be amplified by a phonon crystal to measure the corneal elastic modulus. A system device composed of a semiconductor continuous laser, a phononic crystal structure and other equipment is adopted, the Brillouinscattered signal is generated through a semiconductor continuous laser system, signal amplification in the phononic crystal is realized, the amplified signal is received by a receiving system to obtain the Brillouin scattered signal of the cornea, and corneal elastic characteristics are further analyzed. The method has the advantage that a phononic crystal signal amplification technology is adopted for amplifying the Brillouin scattered signal.

Method for magnifying corneal scattered signal based on phononic crystal resonance technology

The invention discloses a sensor structure with a periodic band gap structure. The sensor structure comprises a plurality of one-dimensional phononic crystal sector structures arranged at the same center, and a plurality of piezoelectric sensors correspondingly arranged inside the one-dimensional phononic crystal sector structures one by one, wherein an air anti-interference zone is arranged between adjacent one-dimensional phononic crystal sector structures at the same time. The invention has the advantages that the sensor structure is designed by using a periodic structure and made of acoustic super material forming an optical band gap structure, and the sensing signal is enhanced by using the local resonance effect on the special frequency band of the signal, thereby achieving the purpose of improving the sensitivity of the sensor, and making the designed sensor structure have special physical properties.

Yang Jianfeng

Papers

Sensor structure with periodic band gap structure