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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 21, Iss. 11 — Nov. 1, 2004
  • pp: 2180–2185

Ultracompact splitter for submicrometer silicon-on-insulator rib waveguides

Alain Koster, Eric Cassan, Suzanne Laval, Laurent Vivien, and Daniel Pascal  »View Author Affiliations

JOSA A, Vol. 21, Issue 11, pp. 2180-2185 (2004)

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An ultracompact and efficient 1×2 splitter for submicrometer silicon-on-insulator rib waveguides using a star coupler is reported. The structure proposed here is decidedly smaller than the usual splitters such as multi-mode interference or Y-branch devices and much less sensitive to technological fluctuations. Design of the compact splitter is optimized at λ=1.31 μm with the effective-index method and a two-dimensional beam-propagation method. The excess losses are lower than 0.15 dB, and the dependence of the losses on wavelength between 1.23 and 1.63 μm is almost flat (variation less than 0.04 dB), which makes the device very interesting for coarse wavelength-division multiplexing applications within the silicon photonic technology.

© 2004 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.5990) Integrated optics : Semiconductors

Original Manuscript: January 16, 2004
Revised Manuscript: May 18, 2004
Manuscript Accepted: May 18, 2004
Published: November 1, 2004

Alain Koster, Eric Cassan, Suzanne Laval, Laurent Vivien, and Daniel Pascal, "Ultracompact splitter for submicrometer silicon-on-insulator rib waveguides," J. Opt. Soc. Am. A 21, 2180-2185 (2004)

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