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Optics Letters

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  • Vol. 20, Iss. 6 — Mar. 15, 1995
  • pp: 581–583

Spot size transformer with a periodically segmented waveguide based on InP

F. Dorgeuille, B. Mersali, S. François, G. Hervé-Gruyer, and M. Filoche  »View Author Affiliations


Optics Letters, Vol. 20, Issue 6, pp. 581-583 (1995)
http://dx.doi.org/10.1364/OL.20.000581


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Abstract

We report what is to our knowledge the first optimization of a spot size transformer by use of a periodically segmented waveguide for photonic integrated circuits based on InP. It is shown that a nonlinear variation of the segmentation ratio along the propagation direction allows one to make an adiabatic transition of a short length. A simple method based on the study of a beveled edge transition is presented for the optimization of such a device. Internal losses in the transition region as low as 1.2 dB are obtained between a coupling waveguide and a simple heterostructure waveguide, with a very high transition spot size expansion factor.

© 1995 Optical Society of America

History
Original Manuscript: September 9, 1994
Published: March 15, 1995

Citation
F. Dorgeuille, B. Mersali, S. François, G. Hervé-Gruyer, and M. Filoche, "Spot size transformer with a periodically segmented waveguide based on InP," Opt. Lett. 20, 581-583 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-6-581


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References

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