Abstract
Properties of wave transmission in a photonic quantum well (PQW) structure containing superconducting materials are theoretically investigated. We consider two possible PQW structures, (AB) P (CD) Q (AB) P -asymmetric and (AB) P (CD) Q (BA) P -symmetric, where the host photonic crystal (PC) (AB) P is made of dielectrics, A = SrTiO3, B = Al2O3, and the PQW (CD) Q contains C = A and superconducting layer D = YBa2Cu3O7ix, a typical high-temperature superconducting thin fllm. Multiple transmission peaks can be seen within the photonic band gap (PBG) of (AB) P and the number of peaks is directly determined by the stack number of PQW, i.e., it equals Q-1. Additionally, the results show that symmetric PQW structure is preferable to the design of a multichannel transmission fllter. The efiect of stack number of photonic barrier is also illustrated. Such a fllter operating at terahertz with feature of multiple channels is of technical use in superconducting optoelectronic applications.
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