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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 6 — Mar. 25, 2013
  • pp: 7748–7757

Optimal design of suspended silica on-chip splitter

Soheil Soltani and Andrea M. Armani  »View Author Affiliations

Optics Express, Vol. 21, Issue 6, pp. 7748-7757 (2013)

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Abstract: Photonic splitters and couplers are one of the fundamental elements in integrated optical circuits. As such, over the past decade significant research efforts have been dedicated to the development of low loss, wide bandwidth devices. While silica-based devices have clear advantages in terms of bandwidth, silicon and silicon nitride devices have lead the field in terms of ease of integration. In the present work, we provide design parameters for a novel splitter based on a suspended silica device. Unlike previous coupler devices which have smooth transition regions, the proposed device has a small defect which enables coupling across a large membrane. The designs are based on 3D FDTD models, and incorporate wavelength, refractive index and polarization dependence. The model is experimentally verified at select wavelengths from the visible through the near-IR. For comparison, we have also modeled the splitting ratio for several materials which are commonly used as waveguiding devices.

© 2013 OSA

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.1360) Optical devices : Beam splitters

ToC Category:
Integrated Optics

Original Manuscript: January 28, 2013
Revised Manuscript: March 10, 2013
Manuscript Accepted: March 12, 2013
Published: March 21, 2013

Soheil Soltani and Andrea M. Armani, "Optimal design of suspended silica on-chip splitter," Opt. Express 21, 7748-7757 (2013)

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