AUTHENTICATION STRUCTURE AND METHOD FOR AUTHENTICATING OBJECT AND DEVICE ADOPTING THE SAME

摘要

Disclosed are an authentication structure and method for authenticating an object and an apparatus adopting the authentication structure and method. A disclosed authentication structure may be configured to output a speckle pattern attributable to a surface plasmon. The speckle pattern may be used for authentication of the object. According to another aspect, a disclosed authentication structure may include an input coupler and an output coupler which are spaced apart from each other. The output coupler may be configured to output an interference pattern using a coherent wave guided from the input coupler. The coherent wave may include a surface plasmon, and the interference pattern may include a speckle pattern.