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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 8 — Aug. 1, 2006
  • pp: 1666–1673

Preparation of a planar multimode interference coupler with a graded-index profile using polysilane with photobleaching properties

Hidenobu Hamada  »View Author Affiliations

JOSA B, Vol. 23, Issue 8, pp. 1666-1673 (2006)

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To investigate the viability of a planar graded-index multimode waveguide fabricated using a new method (to our knowledge) employing polysilane with photobleaching properties, we designed a planar two-way multimode power splitter based on multimode interference, with a core possessing a vertically parabolic and horizontally uniform index profile. We carried out mode propagation analysis using the Marcatili model and optimization using a three-dimensional beam-propagation method. The prototype was fabricated by means of multiple dicing after UV exposure and heat treatment in air. Index profile measurements using a special end-face reflection method showed it to have a vertically graded-index profile with relative index difference of 0.0456. Output beam profile observation using a CCD camera showed that it successfully divided the beam planewise.

© 2006 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Optical Devices

Original Manuscript: September 23, 2005
Revised Manuscript: February 8, 2006
Manuscript Accepted: March 21, 2006

Hidenobu Hamada, "Preparation of a planar multimode interference coupler with a graded-index profile using polysilane with photobleaching properties," J. Opt. Soc. Am. B 23, 1666-1673 (2006)

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