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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 10 — May. 15, 2007
  • pp: 1250–1252

Lossless strip-to-slot waveguide transformer

Ning-Ning Feng, Rong Sun, Lionel C. Kimerling, and Jurgen Michel  »View Author Affiliations

Optics Letters, Vol. 32, Issue 10, pp. 1250-1252 (2007)

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We present a highly efficient integratable waveguide transformer that is capable of converting Gaussian-like waveguide modes to much more complicated non-Gaussian-like slot-waveguide modes, and vice versa. The structure consists of several pairs of complementary tapers capable of making this mode conversion virtually lossless. The capability of extremely low-loss mode transformation between these two classes of waveguides has been demonstrated by means of single- and double-slot transformers. Our simulation has shown that the total transformation losses are less than 0.01 and 0.02 dB per transformer, respectively, and can be easily achieved, with a total device length of less than 100 μ m .

© 2007 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves

ToC Category:
Integrated Optics

Original Manuscript: December 14, 2006
Revised Manuscript: February 8, 2007
Manuscript Accepted: February 9, 2007
Published: April 17, 2007

Ning-Ning Feng, Rong Sun, Lionel C. Kimerling, and Jurgen Michel, "Lossless strip-to-slot waveguide transformer," Opt. Lett. 32, 1250-1252 (2007)

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