title: Polarization-independent drop filters based on photonic crystal self-collimation ring resonators.
abstract: We report here a polarization-independent drop filter (PIDF) based on a photonic crystal self-collimation ring resonator (SCRR). Despite of the large birefringence associated with the polarization-dependent dispersion properties, we demonstrate a PIDF based on multiple-beam interference theory and polarization peak matching (PPM) technique. The PIDF performance was also investigated based on finite-difference time-domain (FDTD) technique, with excellent agreement between the theory and the simulation. For the designed drop wavelength of 1550 nm, the polarization-independent free spectral range is about 36.1 nm, which covers the whole optical communication C-band window. The proposed PIDFs are highly desirable for applications in photonic integrated circuits (PICs).
authors.affiliation: Department of Physics and Electronic Information Engineering, Minjiang University, Fuzhou, 350108, PR China.
authors.forename: Xiyao
authors.initials: X
authors.lastname: Chen
authors.forename: Zexuan
authors.initials: Z
authors.lastname: Qiang
authors.forename: Deyin
authors.initials: D
authors.lastname: Zhao
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Yishen
authors.initials: Y
authors.lastname: Qiu
authors.forename: Weiquan
authors.initials: W
authors.lastname: Yang
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhou
mesh_terms: D017076:Computer-Aided Design; D003460:Crystallization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D008027:Light; D055096:Optical Devices; D017785:Photons; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D014159:Transducers