Synthesis and characterization of a photochromic sol-gel material functionalized with azo dye

Xianjun Ke, Xingzhong Yan, Sangyup Song, Daqun Li, Jame J. Yang, Michael R. Wang

Research output: Contribution to journalArticle

14 Scopus citations


An azo dye functionalized sol-gel material has been designed and synthesized to possess photochromism under a green laser beam illumination control. 10-mW laser illumination with a spot size of 1 mm2 at 532 nm wavelength on the film material was found to result in 6 × 10-4 change in material refractive index. The response time of the material photochromism is around 50 ms (3-dB modulation bandwidth of 20 Hz). Further optical transmission measurements reveal low optical absorption by the film material at 1.55 μm wavelength window. The investigation of a tunable waveguide Bragg grating device with the sol-gel material suggests a new promising platform candidate for the fabrication of all-optical controlled photonic devices.

Original languageEnglish (US)
Pages (from-to)1375-1380
Number of pages6
JournalOptical Materials
Issue number11
StatePublished - Jul 2007


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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