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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 13 — Jun. 23, 2008
  • pp: 9254–9260

Tunable integrated optical filter made of a glass ion-exchanged waveguide and an electro-optic composite holographic grating

A. d’Alessandro, D. Donisi, L. De Sio, R. Beccherelli, R. Asquini, R. Caputo, and C. Umeton  »View Author Affiliations

Optics Express, Vol. 16, Issue 13, pp. 9254-9260 (2008)

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We report the fabrication and the optical characterization of a hybrid tunable integrated optical filter. It consists of a diffused ion-exchanged channel waveguide on a borosilicate glass substrate with a cover of the same glass to form a gap filled with a holographic grating. The grating morphology, called POLICRYPS (POlymer LIquid CRYstal Polymer Slices), is made of alternating stripes of polymer and liquid crystal acting as overlayer for the underneath waveguide. The filter structure includes aluminum coplanar electrodes to electrically control the grating properties, allowing the tunability of the filter. The electric driving power required to tune the filter obtained was in the range of submilliwatts due to the efficient liquid crystal electro-optic effect.

© 2008 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.1480) Optical devices : Bragg reflectors
(230.1950) Optical devices : Diffraction gratings
(230.2090) Optical devices : Electro-optical devices
(130.2755) Integrated optics : Glass waveguides
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: January 23, 2008
Revised Manuscript: March 27, 2008
Manuscript Accepted: May 13, 2008
Published: June 9, 2008

Antonio d'Alessandro, Domenico Donisi, Luciano De Sio, Romeo Beccherelli, Rita Asquini, Roberto Caputo, and Cesare Umeton, "Tunable integrated optical filter made of a glass ion-exchanged waveguide and an electro-optic composite holographic grating," Opt. Express 16, 9254-9260 (2008)

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