Broadband infrared light emitting waveguides based on UV curable PbS quantum dot composites

Kai Shen, Sarfaraz Baig, Guomin Jiang, Young Hun Paik, Sung Jin Kim, Michael R. Wang

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

2 Scopus citations


We present herein the active PbS-photopolymer waveguide fabricated by vacuum assisted microfluidic (VAM) soft lithography technique. The PbS Quantum Dots (QDs) were synthesized using colloidal chemistry methods with tunable sizes and emission wavelengths, resulting in efficient light emission around 1000 nm center wavelength. The PbS QDs have demonstrated much better solubility in our newly synthesized UV curable polymer than SU-8 photoresist, verified by Photoluminescence (PL) testing. Through refractive index control, the PbS QDs-polymer core material and polymer cladding material can efficiently confine the infrared emitting light with a broad spectral bandwidth of ∼180 nm. Both single-mode and multi-mode light emitting waveguides have been realized.

Original languageEnglish (US)
Title of host publicationOptical Interconnects XVIII
EditorsHenning Schroder, Ray T. Chen
ISBN (Electronic)9781510615618
StatePublished - 2018
EventOptical Interconnects XVIII 2018 - San Francisco, United States
Duration: Jan 29 2018Jan 31 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOptical Interconnects XVIII 2018
Country/TerritoryUnited States
CitySan Francisco


  • Light Source
  • Microfluidic
  • Quantum Dot
  • UV lithography
  • Waveguide

ASJC Scopus subject areas

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


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