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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 23 — Nov. 10, 2008
  • pp: 19078–19090

Apodized SCISSORs for filtering and switching

Sang-Yeon Cho and Richard Soref  »View Author Affiliations

Optics Express, Vol. 16, Issue 23, pp. 19078-19090 (2008)

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This paper presents 1550-nm simulation results on the waveguided silicon-on-insulator four-port optical filtering and switching devices known as “SCISSOR” (an in-line array of microring resonators wherein each ring is coupled to two bus waveguides). We optimized the array number, the ring-bus coupling and the inter-ring spacing in order to obtain “rectangular” filter-passband shapes that have not heretofore been reported in the resonant-optics literature. We were able to engineer a box-like bandpass whose wavelength width could be anywhere from 5 to 50 % of the free spectral range (FSR). We then performed ring-bus apodization of the array that increased side-lobe suppression on the main filter band and widened the band. By reducing the FSR to 2.51 nm with increased ring diameter, we also showed that complete, high-extinction 2×2 optical switching is attained when the effective index of each ring in the group is changed by 2×10-3, giving 1.02-nm shift of the 0.77-nm passband. Tunable filtering, sensing, reconfigurable add/drop and wavelength-division de-multiplexing is offered in addition to switching.

© 2008 Optical Society of America

OCIS Codes
(160.3130) Materials : Integrated optics materials
(230.2090) Optical devices : Electro-optical devices
(230.3990) Optical devices : Micro-optical devices
(130.4815) Integrated optics : Optical switching devices
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: September 5, 2008
Revised Manuscript: October 7, 2008
Manuscript Accepted: October 7, 2008
Published: November 4, 2008

Sang-Yeon Cho and Richard Soref, "Apodized SCISSORs for filtering and switching," Opt. Express 16, 19078-19090 (2008)

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