title: Low-loss, efficient, wide-angle 1  ×  4 power splitter at ∼1.55  μm wavelengths for four play applications built with a monolithic photonic crystal slab.
abstract: We exhibit a low-loss, efficient, and wide-angle 1×4 power splitter based on a silicon monolithic photonic crystal slab with triangular lattice air holes. A distinctive power-splitting ratio can be obtained depending on the hole shift in the bending region and the structure adjustment at the junction area with regard to the power splitter designed. Simulation results achieved with a rigorous finite-difference time-domain technique show that the TE-polarized light is designed to ensure single-mode operation and the transmitted power is distributed almost equally, with a total transmission of 93.4% at the 1550 nm optical operation wavelength. Furthermore, we demonstrate ultralow-loss output of the optimized power splitter, with a transmittance above 22.5% (-6.48  dB) achieved in the ranges of 1524-1594 and 1610-1620 nm, which cover the entire C-band and a large portion of the L-band of optical communication.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.forename: Huiping
authors.initials: H
authors.lastname: Tian
authors.forename: Daquan
authors.initials: D
authors.lastname: Yang
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.forename: Lijun
authors.initials: L
authors.lastname: Huang
authors.forename: Yuefeng
authors.initials: Y
authors.lastname: Ji