Graded-index core polymer optical waveguide circuit fabricated using a micro-dispenser for high-density on-board optical interconnects

Kazutomo Soma, Takaaki Ishigure

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We introduce a simple photo-mask-free fabrication method of multimode polymer optical waveguides (PPOWs): "the Mosquito method" that utilizes a micro-dispenser. In the Mosquito method, a viscous monomer for cores is directly dispensed from a thin needle into a cladding monomer that is coated on a substrate. Because of the monomer diffusion, graded-index (GI) circular core is formed. By adjusting several parameters to control the core shape and diameter, 15-cm long, 40-μm core diameter, with 125-μm pitch GI-circular core PPOWs (12 channels) are successfully fabricated by the Mosquito method. We experimentally demonstrate superior optical properties of the GI- circular core polymer waveguides: connection loss with GI multimode fibers, inter-channel crosstalk, etc. to SI-square core polymer waveguides composed of the same silicone polymer materials. Furthermore, we fabricate GI-core PPOW circuits in which perpendicularly curved waveguides are involved by applying the Mosquito method. The curved PPOWs with a 250-μm pitch are obtained successfully and the curve-radius is varied from 3 mm to 20 mm by adjusting the scanning program of the needle. The insertion loss of the curved waveguides is measured for evaluating the bending losses. The waveguide with lager curve-radius shows lower insertion loss, namely low bending loss. Additionally, it is experimentally confirmed that the curved waveguides with higher numerical aperture (NA = 0.30) fabricated utilizing a different silicone resin for the cladding exhibit a bending loss as low as 0.5 dB even under 3-mm curve radius. The Mosquito-method would be a promising method for realizing highspeed and high-density on-board optical interconnects.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8630
DOIs
Publication statusPublished - 2013
EventOptoelectronic Interconnects XIII - San Francisco, CA, United States
Duration: 2013 Feb 32013 Feb 6

Other

OtherOptoelectronic Interconnects XIII
CountryUnited States
CitySan Francisco, CA
Period13/2/313/2/6

Fingerprint

Polymer Waveguide
dispensers
Optical Interconnects
Dispensers
optical interconnects
Optical interconnects
Optical Waveguides
Optical waveguides
optical waveguides
Printed circuit boards
Polymers
Waveguides
Networks (circuits)
polymers
Waveguide
waveguides
Monomers
Insertion losses
Silicones
Needles

Keywords

  • bending waveguide
  • circular core
  • Graded-index core
  • micro-dispenser
  • multimode polymer parallel optical waveguide
  • Optical interconnections
  • optical printed circuit board

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Graded-index core polymer optical waveguide circuit fabricated using a micro-dispenser for high-density on-board optical interconnects. / Soma, Kazutomo; Ishigure, Takaaki.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8630 2013. 863005.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Soma, K & Ishigure, T 2013, Graded-index core polymer optical waveguide circuit fabricated using a micro-dispenser for high-density on-board optical interconnects. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8630, 863005, Optoelectronic Interconnects XIII, San Francisco, CA, United States, 13/2/3. https://doi.org/10.1117/12.2003354
Soma, Kazutomo ; Ishigure, Takaaki. / Graded-index core polymer optical waveguide circuit fabricated using a micro-dispenser for high-density on-board optical interconnects. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8630 2013.
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