Abstract

A 2-D blazed grating coupler with fully etched triangular holes to realize high efficient and broadband coupling between silicon-on-insulator nanowaveguide and fiber is proposed. By changing the lateral width of a triangular hole along propagating direction in each single grating period gradually according to effective medium theory, a high coupling efficiency of -2.78 dB and an extremely large 1 dB bandwidth of 180 nm are achieved simultaneously. By optimizing the buried oxide thickness from 2 to 1.83 <i>μ</i>m, the coupling efficiency can be further improved to -2.18 dB and 1 dB bandwidth is enlarged to 290 nm.

© 2012 IEEE

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  1. G. Roelkens, D. Van Thourhout, R. Baets, "High efficiency silicon-on-insulator grating coupler based on a poly-Silicon overlay," Opt. Express 14, 11622-11630 (2006).
  2. P. Dumon, W. Bogaerts, D. Van Thourhout, D. Taillaert, R. Baets, J. Wouters, S. Beckx, P. Jaenen, "Compact wavelength router based on a silicon-on-insulator arrayed waveguide grating pigtailed to a fiber array," Opt. Express 14, 664-669 (2006).
  3. G. Roelkens, D. V. Thourhout, R. Baets, "High efficiency grating coupler between silicon-on-insulator waveguides and perfectly vertical optical fibers," Opt. Lett. 32, 1495-1497 (2007).
  4. F. V. Laere, G. Roelkens, J. Schrauwen, D. Taillaert, P. Dumon, W. Bogaerts, D. V. Thourhout, R. Baets, "Compact grating couplers between optical fibers and silicon-on-insulator photonic wire waveguides with 69% coupling efficiency," Proc. Opt. Fiber Commun. Conf./Nat. Fiber Opt. Eng. Conf., Vols 1–6 (2006) pp. 2684-2686.
  5. D. Taillaert, P. Bienstman, R. Baets, "Compact efficient broadband grating coupler for silicon-on-insulator waveguides," Opt. Lett. 29, 2749-2751 (2004).
  6. X. Chen, C. Li, H. K. Tsang, "Fabrication-tolerant waveguide chirped grating coupler for coupling to a perfectly vertical optical fiber," IEEE Photon. Technol. Lett. 20, 1914-1916 (2008).
  7. R. Halir, P. Cheben, J. Schmid, R. Ma, D. Bedard, S. Janz, D. X. Xu, A. Densmore, J. Lapointe, Í. Molina-Fernández, "Continuously apodized fiber-to-chip surface grating coupler with refractive index engineered subwavelength structure," Opt. Lett. 35, 3243-3245 (2010).
  8. R. Halir, P. Cheben, S. Janz, D. X. Xu, I. Molina-Fernandez, J. G. Wanguemert-Perez, "Waveguide grating coupler with subwavelength microstructures," Opt. Lett. 34, 1408-1410 (2009).
  9. M. Antelius, K. B. Gylfason, H. Sohlstrm, "An apodized SOI waveguide-to-fiber surface grating coupler for single lithography silicon photonics," Opt. Express 19, 3592-3598 (2011).
  10. X. Chen, C. Fung, Y. M. Chen, H. K. Tsang, "Subwavelength waveguide grating coupler for fiber-to-chip coupling on SOI with 80 nm 1 dB-Bandwidth," Conf. Lasers and Electro-optics (2011) pp. 1-2.
  11. J. Yang, Z. Zhou, H. Jia, X. Zhang, S. Q. Qin, "High-performance and compact binary blazed grating coupler based on an asymmetric subgrating structure and vertical coupling," Opt. Lett. 36, 2614-2617 (2011).
  12. S. G. Johnson, J. D. Joannopoulos, "Block-iterative frequency-domain methods for Maxwell's equations in a planewave basis," Opt. Express 8, 173-190 (2001).
  13. C. R. Doerr, L. Chen, Y. K. Chen, L. L. Buhl, "Wide bandwidth silicon nitride grating coupler," IEEE Photon. Technol. Lett. 22, 1461-1463 (2010).
  14. L. Liu, M. Pu, K. Yvind, J. M. Hvam, "High-efficiency, large-bandwidth silicon-on-insulator grating coupler based on a fully-etched photonic crystal structure," Appl. Phys. Lett. 96, 051126 (2010).
  15. J. Feng, Z. Zhou, "Polarization beam splitter using a binary blazed grating coupler," Opt. Lett. 32, 1662-1664 (2007).

2011

2010

R. Halir, P. Cheben, J. Schmid, R. Ma, D. Bedard, S. Janz, D. X. Xu, A. Densmore, J. Lapointe, Í. Molina-Fernández, "Continuously apodized fiber-to-chip surface grating coupler with refractive index engineered subwavelength structure," Opt. Lett. 35, 3243-3245 (2010).

C. R. Doerr, L. Chen, Y. K. Chen, L. L. Buhl, "Wide bandwidth silicon nitride grating coupler," IEEE Photon. Technol. Lett. 22, 1461-1463 (2010).

L. Liu, M. Pu, K. Yvind, J. M. Hvam, "High-efficiency, large-bandwidth silicon-on-insulator grating coupler based on a fully-etched photonic crystal structure," Appl. Phys. Lett. 96, 051126 (2010).

2009

2008

X. Chen, C. Li, H. K. Tsang, "Fabrication-tolerant waveguide chirped grating coupler for coupling to a perfectly vertical optical fiber," IEEE Photon. Technol. Lett. 20, 1914-1916 (2008).

2007

2006

2004

2001

Appl. Phys. Lett.

L. Liu, M. Pu, K. Yvind, J. M. Hvam, "High-efficiency, large-bandwidth silicon-on-insulator grating coupler based on a fully-etched photonic crystal structure," Appl. Phys. Lett. 96, 051126 (2010).

IEEE Photon. Technol. Lett.

C. R. Doerr, L. Chen, Y. K. Chen, L. L. Buhl, "Wide bandwidth silicon nitride grating coupler," IEEE Photon. Technol. Lett. 22, 1461-1463 (2010).

X. Chen, C. Li, H. K. Tsang, "Fabrication-tolerant waveguide chirped grating coupler for coupling to a perfectly vertical optical fiber," IEEE Photon. Technol. Lett. 20, 1914-1916 (2008).

Opt. Express

Opt. Lett.

Other

X. Chen, C. Fung, Y. M. Chen, H. K. Tsang, "Subwavelength waveguide grating coupler for fiber-to-chip coupling on SOI with 80 nm 1 dB-Bandwidth," Conf. Lasers and Electro-optics (2011) pp. 1-2.

F. V. Laere, G. Roelkens, J. Schrauwen, D. Taillaert, P. Dumon, W. Bogaerts, D. V. Thourhout, R. Baets, "Compact grating couplers between optical fibers and silicon-on-insulator photonic wire waveguides with 69% coupling efficiency," Proc. Opt. Fiber Commun. Conf./Nat. Fiber Opt. Eng. Conf., Vols 1–6 (2006) pp. 2684-2686.

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