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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 1 — Jan. 9, 2006
  • pp: 148–161

Monolithically integrated asymmetric graded and step-index couplers for microphotonic waveguides

A. Delâge, S. Janz, B. Lamontagne, A. Bogdanov, D. Dalacu, D.-X. Xu, and K.P. Yap  »View Author Affiliations


Optics Express, Vol. 14, Issue 1, pp. 148-161 (2006)
http://dx.doi.org/10.1364/OPEX.14.000148


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Abstract

A monolithically integrated asymmetric graded index (GRIN) or step-index (GRIN) mode converters for microphotonic waveguides are proposed and described. The design parameters and tolerances are calculated for amorphous silicon (a-Si) couplers integrated with silicon-on-insulator waveguides. The GRIN and step-index couplers operate over a wide wavelength range with low polarization dependence, and the lithographic resolution needed is only ±1 μm. Finally, experimental results are presented for a single layer 3 μm thick step-index a-Si coupler integrated on a 0.8 μm thick SOI waveguide. The measured variation of coupling efficiency with coupler length is in agreement with theory, with an optimal coupling length of 15 μm for this device.

© 2006 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.5990) Integrated optics : Semiconductors
(230.7370) Optical devices : Waveguides

ToC Category:
Integrated Optics

Citation
A. Delâge, S. Janz, B. Lamontagne, A. Bogdanov, D. Dalacu, D.-X. Xu, and K. P. Yap, "Monolithically integrated asymmetric graded and step-index couplers for microphotonic waveguides," Opt. Express 14, 148-161 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-1-148


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References

  1. V.R. Almeida, R.R. Panepucci, and M. Lipson, "Nanotaper for compact mode conversion," Opt. Lett. 28, 1302-1304 (2003). [CrossRef] [PubMed]
  2. T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 µm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002). [CrossRef]
  3. K.K. Lee, D.R. Lim, D. Pan, C. Hoepfner, W.-Y. Oh, K. Wada, L.C Kimmerling, K.P. Yap and M.T. Doan, "Mode transformer for miniaturized optical circuits," Opt. Lett. 30, 498-500 (2005). [CrossRef] [PubMed]
  4. G.Z. Masanovic, V.M.N. Passaro, and G.T. Reed, "Dual grating-assisted directional coupling between fibers and thin semiconductor waveguides," IEEE Photonics Technol. Lett. 15, 1395-1397 (2003). [CrossRef]
  5. A. Sure, T. Dillon, J. Murakowski, C. Lin, D. Pustai, and D. Prather, "Fabrication and characterization of three-dimensional silicon tapers," Optics Express 11, 3555-3561 (2003). [CrossRef] [PubMed]
  6. C. Manolatou and H.A. Haus, Passive components for Dense Optical Integration (Kluwer Academic Publishers, Boston, 2002), Chapter 6. [CrossRef]
  7. K. Shiraishi, C.S. Tsai, H. Yoda, and K. Minagawa, "A micro-GRIN slab tip for integrating coupling between superfine-core waveguides and single mode fibers," in Proceedings of CLEO/Pacific RIM 2003, CD-ROM (Institute of Electrical and Electronics Engineers, Piscataway, NJ, 2003).
  8. K. Iizuka, Engineering Optics, 2nd Edition (Springer-Verlag, Berlin 1987), Chapter 5.
  9. H. Kogelnik, "Theory of Optical Waveguides," in Guided-wave Optoelectronics, T. Tamir, ed., 7-87 (Springer Verlag, Berlin 1990)
  10. A. Delâge, S. Janz, D.-X. Xu, D. Dalacu, B. Lamontagne, and A. Bogdanov, in Photonics North 2004: Optical Components and Devices, J.C. Armitage, S. Fafard, R.A. Lessard, and G.A Lamprpoulos, eds. "Graded-index coupler for microphotonic waveguides," Proc. SPIE Vol. 5577, 204-212 (2004). [CrossRef]
  11. L.B. Soldano and E.C.M. Pennings, "Optical multi-mode interference devices based on self-imaging: principles and applications," J. Lightwave Technol. 13, 615-627 (1995). [CrossRef]
  12. R. Gordon, "Harmonic oscillation in a spatially finite array waveguide," Opt. Lett. 29, 2752-2755 (2004). [CrossRef] [PubMed]
  13. R.U. Ahmad, F. Pizzuto, G.S. Camarda, R.L. Espinola, H. Rao, and R.M. Osgood, "Ultracompact corner-mirrors and T-branches in silicon-on-insulator," IEEE Photon. Technol. Lett. 14, 65-67 (2002). [CrossRef]
  14. V. Nguyen, T. Montalbo, C. Manolatou, A. Agarwal, Yasaitis, L.C. Kimmerling, and J. Michel, "Compact 3dB single mode fibre-to-waveguide coupler," in Proceedings of the 2nd International Conference on Group IV Photonics, 195-197 (Institute of Electrical and Electronics Engineers, Piscataway, NJ, 2005).

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