公开(公告)号：US20240353591A1

公开(公告)日：2024-10-24

申请号：US18616393

申请日：2024-03-26

Applicant: Anhui University

Inventor： Wei CHEN ,  Weisen LI ,  Qingqing DENG ,  Lixia YANG

IPC: G02B1/00 ,  G02F3/02

CPC classification number: G02B1/005 ,  G02F3/024 ,  G02F2202/32

Abstract: The present disclosure relates to the technical field of terahertz-band optical bistable devices, and provides a graphene-based optical bistable device with a ternary photonic crystal structure. The optical bistable device includes a composite structure suitable for a terahertz band, where the composite structure is formed by a ternary photonic crystal structure, a defect layer C, and a graphene layer G through permutation and combination; and the ternary photonic crystal structure is formed by three alternately-arranged dielectric layers A, B, and P with different dielectric constants, two defect layers C are embedded in the ternary photonic crystal structure, and the graphene layer G is embedded between the two defect layers C. The composite structure is Air/(ABP)N1CGMC(ABP)N2/Air the dielectric layer A is made of a ZrO2 material, the dielectric layer B is made of a Si material, and the dielectric layer P is made of an anisotropic plasma material.