title: Cascade wide-angle Y-junction 1 x 16 optical power splitter based on silicon wire waveguides on silicon-on-insulator.
abstract: A 1 x 16 optical power splitter with wide splitting angle, uniform outputs, and low excess loss is demonstrated. The 1 x 16 splitter comprising cascaded 1 x 2 splitters with arc-shaped branching waveguides is fabricated on the silicon-on-insulator (SOI) substrate. The gap between the branching waveguides is widened in a short propagation length such that influences of etch residues and air voids in the gap on the optical power uniformity are reduced significantly. The measured power uniformity of the 1 x 16 splitter is better than 0.3 dB at wavelength of 1550 nm.
authors.affiliation: Institute of Microelectronics, A*STAR, 11 Science Park Road, Science Park II, Singapore 117685.
authors.forename: S H
authors.initials: SH
authors.lastname: Tao
authors.forename: Q
authors.initials: Q
authors.lastname: Fang
authors.forename: J F
authors.initials: JF
authors.lastname: Song
authors.forename: M B
authors.initials: MB
authors.lastname: Yu
authors.forename: G Q
authors.initials: GQ
authors.lastname: Lo
authors.forename: D L
authors.initials: DL
authors.lastname: Kwong