OSA's Digital Library

Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 23, Iss. 8 — Aug. 1, 2005
  • pp: 2462–

Efficient Nonadiabatic Planar Waveguide Tapers

Bert Luyssaert, Peter Bienstman, Peter Vandersteegen, Pieter Dumon, and Roel Baets

Journal of Lightwave Technology, Vol. 23, Issue 8, pp. 2462- (2005)

View Full Text Article

Acrobat PDF (505 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


We report taper designs with high transmission efficiencies and with lengths shorter than those needed for adiabatic operation. The tapering occurs between rectangular optical waveguides with the same vertical silicon-on-insulator layer structure, but with different horizontal widths, namely 0.5 and 2.0 µm, and for taper lengths between 0.5 and 3.0 µm. After a comparison between two different optimization methods in a two-dimensional calculation scheme, one of these is repeated using three-dimensional calculations. The results show that, also in the length region where conventional linear and parabolic tapers are not yet adiabatic, tapers with a high efficiency can be designed by applying complex taper structures with more degrees of freedom.

© 2005 IEEE

Bert Luyssaert, Peter Bienstman, Peter Vandersteegen, Pieter Dumon, and Roel Baets, "Efficient Nonadiabatic Planar Waveguide Tapers," J. Lightwave Technol. 23, 2462- (2005)

Sort:  Journal  |  Reset


  1. D. Marcuse, "Radiation losses of tapered dielectric slab waveguides", Bell Syst. Tech. J., vol. 49, no. 2, pp. 273-290, 1970.
  2. C. K. Burns, A. F. Milton and A. B. Lee, "Optical-waveguide parabolic coupling horns", Appl. Phys. Lett., vol. 30, no. 1, pp. 28-30, 1977.
  3. A. F. Milton and C. K. Burns, "Mode coupling in optical waveguide horns", IEEE J. Quantum Electron., vol. 13, no. 10, pp. 828-835, Oct. 1977.
  4. K. Kato and Y. Tohmori, "PLC hybrid integration technology and its application to photonic components", IEEE J. Sel. Top. Quantum Electron., vol. 6, no. 1, pp. 4-13, Jan.-Feb. 2000.
  5. D. Taillaert, P. Bienstman and R. Baets, "Compact efficient broadband grating coupler for silicon-on-insulator waveguides", Opt. Lett., vol. 29, no. 23, pp. 2749-2751, 2004.
  6. M. M. Spühler, B. J. Offrein, G. L. Bona, R. Germann, I. Masserek and D. Erni, "A very short planar silica spot-size converter using a nonperiodic segmented waveguide", J. Lightw. Technol., vol. 16, no. 9, pp. 1680-1685, Sep. 1998.
  7. M. M. Spühler, D. Erni and J. Fröhlich, "An evolutionary optimization procedure applied to the synthesis of integrated spot-size converters", Opt. Quantum Electron., vol. 30, no. 5-6, pp. 305-321, 1998.
  8. T. Felici and H. W. Engl, "On shape optimization of optical waveguides using inverse problem techniques", Inverse Probl., vol. 17, no. 4, pp. 1141-1162, 2001.
  9. T. Yabu, M. Geshiro and S. Sawa, "New design method for low-loss Y-branch waveguides", J. Lightw. Technol., vol. 19, no. 9, pp. 1376-1384, Sep. 2001.
  10. B. Luyssaert, P. Vandersteegen, D. Taillaert, P. Dumon, W. Bogaerts, P. Bienstman, D. Van Thourhout, V. Wiaux, S. Beckx and R. Baets, "A compact photonic horizontal spot-size converter realized in silicon-on-insulator", IEEE Photon. Technol. Lett., vol. 17, no. 1, pp. 73-75, Jan. 2005.
  11. P. Bienstman and R. Baets, "Optical modelling of photonic crystals and VCSELs using eigenmode expansion and perfectly matched layers", Opt. Quantum Electron., vol. 33, no. 4-5, pp. 327-341, 2001.

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited