title: Observation of tunable nonlinear effects in an analogue of superconducting composite right/left hand filter.
abstract: Artificial structures with negative permittivity or permeability have attracted significant attention in the science community because they provide a pathway for obtaining exotic electromagnetic properties not found in natural materials. At the moment, the great challenge of these artificial structures in microwave frequency exhibits a relatively large loss. It is well-known that superconducting thin films have extremely low surface resistance. Hence, it is a good candidate to resolve this constraint. Besides, the reported artificial structures with negative permittivity or permeability are mainly focusing on linear regime of wave propagation. However, any future effort in creating tunable structures would require knowledge of nonlinear properties. In this work, a tunable superconducting filter with composite right/left-hand transmission property is proposed and fabricated. Its nonlinear effects on temperature and power are studied by theoretical analysis and experiments.
authors.affiliation: Department of Information Engineering, East China Jiaotong University, Nanchang, 330013, China.|Graduate School of Science and Engineering, Saitama University, Saitama-shi 338-8570, Japan.
authors.forename: Haiwen
authors.initials: H
authors.lastname: Liu
authors.affiliation: Department of Information Engineering, East China Jiaotong University, Nanchang, 330013, China.
authors.forename: Jiuhuai
authors.initials: J
authors.lastname: Lei
authors.affiliation: Department of Information Engineering, East China Jiaotong University, Nanchang, 330013, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Jiang
authors.affiliation: Department of Information Engineering, East China Jiaotong University, Nanchang, 330013, China.
authors.forename: Xuehui
authors.initials: X
authors.lastname: Guan
authors.affiliation: Tianjin Hi-Tech Superconducting Electronic Technologies Co. Ltd, Tianjin, 300384, China.
authors.forename: Laiyun
authors.initials: L
authors.lastname: Ji
authors.affiliation: Graduate School of Science and Engineering, Saitama University, Saitama-shi 338-8570, Japan.
authors.forename: Zhewang
authors.initials: Z
authors.lastname: Ma