Hybrid glass and sol-gel integrated optical waveguides for absorption-based biosensing

Ismail E. Araci, Nasuhi Yurt, Seppo Honkanen, Sergio B. Mendes, N. Peyghambarian

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A novel integrated optical planar waveguide platform for absorption-based biosensing is demonstrated. The platform integrates surface ion-exchanged channel waveguides with one-step UV patterned sol-gel structures to define the probing regions. Cytochrome c protein was utilized to characterize the device performance. Spectroscopically specific attenuation of approximately 2 dB in the guided signal occurred at 532nm for 1.4 cm long probing region. The estimated level of detection is about 1 pmol/cm 2 of surface adsorbed cytochrome c. The proposed structure enables environmentally stable, compact, and inexpensive sensing devices that can be applied to a wide range of biological and chemical species.

Original languageEnglish (US)
Article number60040J
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventFiber Optic Sensor Technology and Applications IV - Boston, MA, United States
Duration: Oct 24 2005Oct 26 2005


  • Biosensors
  • Evanescent wave
  • Integrated optics
  • Ion exchange waveguides
  • Molecular films
  • Sol-gel

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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