Spyrobenzopyran doped core PMMA fibers

Ilkan Cokgor, Alexander S. Dvornikov, Ram Piyaket, Sadik C. Esener, Peter M. Rentzepis, Dennis W. Garvey, Mark G. Kuzyk

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

3 Scopus citations


Cylindrical PMMA fibers with core regions doped with spirobenzopyran molecules have been fabricated. Spirobenzopyran is a photochromic molecule with two forms: spiropyran and merocyanine. In the fibers, one state could be reverted to the other either by a photo-initiated reaction or by thermal excitation. The fluorescence from the merocyanine form could be generated by exciting the core with a 543nm laser. For spirobenzopyran, higher temperatures favor the reaction from spiropyran form to merocyanine form, hence as temperature increases the merocyanine form concentration in the core increase causing the fluorescence intensity to increase. It was observed that the fluorescence increased fairly linearly over a certain range and started rolling off as the temperature approached to 60°C. Refractive index and material dispersion characteristics of SP/PMMA was also measured. Fluorescence generation in the core by two-photon absorption from 40 ps pulses at 1064 nm has been demonstrated. The energy of the pulses was 1.8 uJ, which gave a peak intensity of 5GW/cm2 in 33um core. A portion of the emitted fluorescence was guided to the end of the fiber and a portion of it escaped the cladding and radiated into the air.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Number of pages9
ISBN (Print)0819430935
StatePublished - Jan 1 1999
Externally publishedYes
EventProceedings of the 1999 Organic Photonic Materials and Devices - San Jose, CA, USA
Duration: Jan 25 1999Jan 27 1999

Publication series

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


OtherProceedings of the 1999 Organic Photonic Materials and Devices
CitySan Jose, CA, USA

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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