Open AccessDirectly inscribed multimode polymer waveguide and 3D device for high-speed and high-density optical interconnects
Author(s) -
Xiang Xu,
Lin Ma,
Ying Shi,
Takaaki Ishigure,
Zuyuan He
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.022419
Subject(s) - materials science , optics , waveguide , bend radius , multi mode optical fiber , beam propagation method , coupling loss , wavelength , optoelectronics , insertion loss , transmission loss , optical fiber , bending , refractive index , physics , composite material
A 75-cm-long circular-core polymer waveguide compatible with standard 50-μm-core multimode fibers (MMFs) is designed and fabricated by using a direct inscribing method for high-speed and high-density optical interconnects. The fabricated waveguide has low loss (<0.044 dB/cm at 850 nm) and low crosstalk (<-34 dB with a core pitch of 62.5 μm) with a negligible coupling loss with the MMFs. It also exhibits a low bending loss (<0.08 dB/mm with a bending radius of 4 mm), which agrees well with calculated results. Error-free NRZ data transmission over the 75-cm-long waveguide at 25 Gb/s is demonstrated, and 4 × 25 Gb/s short wavelength division multiplexing (SWDM) is realized on a straight waveguide. Moreover, a two-layer waveguide and a 3-dimensional (3D) Y-splitter/combiner are also fabricated for 3D integration.