title: High resolution three-port filter in two dimensional photonic crystal slabs.
abstract: An in-plane, three-port filter consisting of input/output waveguides and two point-defect cavities in a 2D PC slab is designed and fabricated, where a new feedback method is introduced, and its transmission properties are measured. The measured minimum output wavelength spacing between two channels is 1.5 nm, which is realized by slightly adjusting the size of the resonant cavities. The measured resonant wavelengths of two cavities agree well with the calculated ones and the quality factors of the cavities are almost the same. It is believed that this kind of filter may be useful in optical integrated circuits with high density.
authors.forename: Cheng
authors.initials: C
authors.lastname: Ren
authors.forename: Jie
authors.initials: J
authors.lastname: Tian
authors.forename: Shuai
authors.initials: S
authors.lastname: Feng
authors.forename: Haihua
authors.initials: H
authors.lastname: Tao
authors.forename: Yazhao
authors.initials: Y
authors.lastname: Liu
authors.forename: Kun
authors.initials: K
authors.lastname: Ren
authors.forename: Zhiyuan
authors.initials: Z
authors.lastname: Li
authors.forename: Bingying
authors.initials: B
authors.lastname: Cheng
authors.forename: Daozhong
authors.initials: D
authors.lastname: Zhang
authors.forename: Haifang
authors.initials: H
authors.lastname: Yang