Polymer Bragg gratings for wavelength division multiplexers

Constantina Poga, Robert Blomquist, Louay Eldada, Robert A. Norwood

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


An advanced versatile, low-cost polymeric waveguide technology with Bragg gratings has been developed for filter applications in optical communications. Bragg gratings are photochemically formed in single mode polymeric waveguides using holographic techniques. The resulting gratings exhibit excellent filter characteristics; 99.997% reflectivity in a 2 cm grating, which corresponds to refractive index modulation of the order of 10-3, 0.2 nm width in the reflection peak at the 3dB point in reflectivity, and no sidelobes in the reflection spectrum. The mechanism of the grating formation is discussed; its understanding enables us to enhance the filter characteristics of the gratings. The impact of temperature and humidity on the filter performance is also presented. The shift of the reflection maximum is 0.23 nm/°C. The Bragg shift for a 90% change in relative humidity is 0.2 nm.

Original languageEnglish (US)
Pages (from-to)81-91
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1999
EventProceedings of the 1999 Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI - San Jose, CA, USA
Duration: Jan 27 1999Jan 29 1999

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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