title: Polarization splitter using horizontal slot waveguide.
abstract: In this paper a compact and efficient polarization splitter using horizontal slotted waveguides is presented. The splitter is designed by finite-difference-time-domain simulation and realized experimentally. The splitter is built by using a direction coupler consisting of two horizontal slotted waveguides and achieves a high extinction ratio of 14.1 and 16.8 dB for cross and through ports. The optimal coupling length is found to be 15 µm. The device exhibits a good response of extinction ratio across C + L broadband. The splitter obtained is readily used for a polarization diversity circuit, particularly for platforms with horizontal slot waveguides.
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore Science Park II, 117685, Singapore. zhangh@ime.a-star.edu.sg
authors.forename: Huijuan
authors.initials: H
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: Huang
authors.forename: Suchandrima
authors.initials: S
authors.lastname: Das
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.forename: Mingbin
authors.initials: M
authors.lastname: Yu
authors.forename: Patrick Guo-Qiang
authors.initials: PG
authors.lastname: Lo
authors.forename: Minghui
authors.initials: M
authors.lastname: Hong
authors.forename: John
authors.initials: J
authors.lastname: Thong
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008904:Miniaturization; D012031:Refractometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*