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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 25,
  • Issue 5,
  • pp. 1147-1151
  • (2007)

Tunable Transmission Resonant Filter and Modulator With Vertical Gratings

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Abstract

Resonant filters in waveguides with vertical gratings have been realized on a silicon-on-insulator wafer. Two identical uniformly distributed Bragg reflectors with vertical gratings are separated by a quarter wavelength phase offset. Experimental studies show a broad stopband and a narrow transmission band which shifts with changing substrate temperature that is also illuminated by an external laser pump beam at 514-nm wavelength. Experimental results on a low-frequency thermal modulation using an external light source are also presented.

© 2007 IEEE

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