Abstract

The power imbalance between different waveguide outputs is compensated by manipulating the dispersion of the guided propagation in the multimode interference (MMI) region. This is attainable using a tapered region at the beginning of the MMI region that has been verified through simulation and experiment. From this, the fabrication tolerance for the diameters of holes in a tapered 1×3 photonic crystal waveguide (PhCW) splitter is relaxed up to a range of at least 27nm. The output power is well-balanced to within 1dB. The effective bandwidth of the splitters shifts only around 13nm, for a reduction of 10nm in the diameter of the PhCW holes. The optimized component is an outstanding ultracompact 1×3 splitter for the photonic integrated circuit (PIC).

© 2011 Optical Society of America

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References

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M. Zhang, N. Groothoff, A. C. Krüger, P. X. Shi, and M. Kristensen, Opt. Express 19, 7120 (2011).
[CrossRef] [PubMed]

A. Peruzzo, A. Laing, A. Politi, T. Rudolph, and J. L. O'Brien, Nat. Commun. 2, 224 (2011).
[CrossRef] [PubMed]

2010

2008

T. B. Yu, H. F. Zhou, Z. Gong, J. Y. Yang, X. Q. Jiang, and M. H. Wang, J. Phys. D 41, 095101 (2008).
[CrossRef]

2006

2005

2004

2000

T. Sondergaard, A. Bjarklev, M. Kristensen, J. Erland, and J. Broeng, Appl. Phys. Lett. 77, 785 (2000).
[CrossRef]

Bjarklev, A.

T. Sondergaard, A. Bjarklev, M. Kristensen, J. Erland, and J. Broeng, Appl. Phys. Lett. 77, 785 (2000).
[CrossRef]

Borel, P. I.

Broeng, J.

T. Sondergaard, A. Bjarklev, M. Kristensen, J. Erland, and J. Broeng, Appl. Phys. Lett. 77, 785 (2000).
[CrossRef]

Erland, J.

T. Sondergaard, A. Bjarklev, M. Kristensen, J. Erland, and J. Broeng, Appl. Phys. Lett. 77, 785 (2000).
[CrossRef]

Fage-Pedersen, J.

Frandsen, L. H.

Gong, Z.

T. B. Yu, H. F. Zhou, Z. Gong, J. Y. Yang, X. Q. Jiang, and M. H. Wang, J. Phys. D 41, 095101 (2008).
[CrossRef]

Groothoff, N.

Harpoth, A.

Jensen, J. S.

Jiang, X. Q.

T. B. Yu, H. F. Zhou, Z. Gong, J. Y. Yang, X. Q. Jiang, and M. H. Wang, J. Phys. D 41, 095101 (2008).
[CrossRef]

Kim, H. J.

Kristensen, M.

Kruger, A. C.

Krüger, A. C.

Laing, A.

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Lee, E. H.

Lee, H. S.

Lee, S. G.

Malureanu, R.

Moon, K. M.

O, B. H.

O'Brien, J. L.

A. Peruzzo, A. Laing, A. Politi, T. Rudolph, and J. L. O'Brien, Nat. Commun. 2, 224 (2011).
[CrossRef] [PubMed]

Park, I.

Park, S. G.

Peruzzo, A.

A. Peruzzo, A. Laing, A. Politi, T. Rudolph, and J. L. O'Brien, Nat. Commun. 2, 224 (2011).
[CrossRef] [PubMed]

Politi, A.

A. Peruzzo, A. Laing, A. Politi, T. Rudolph, and J. L. O'Brien, Nat. Commun. 2, 224 (2011).
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Rudolph, T.

A. Peruzzo, A. Laing, A. Politi, T. Rudolph, and J. L. O'Brien, Nat. Commun. 2, 224 (2011).
[CrossRef] [PubMed]

Shi, P.

Shi, P. X.

Sigmund, O.

Sondergaard, T.

T. Sondergaard, A. Bjarklev, M. Kristensen, J. Erland, and J. Broeng, Appl. Phys. Lett. 77, 785 (2000).
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Tetu, A.

Wang, M. H.

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Figures (4)

Fig. 1
Fig. 1

SEM micrographs of the original (a) and proposed tapered (b) splitters with Λ = 380 nm and D = 222 nm . Inset of (b) shows a magnified image of the optimized taper corner.

Fig. 2
Fig. 2

Transverse profile of the magnetic field H y for the ground-mode (a) and the excited-mode (b) in the splitters at k Λ / 2 π = 0.5 .

Fig. 3
Fig. 3

Simulated normalized TE-polarized transmittance by 3D FDTD for different designs of the original (“ o ” in pink dash lines) and the tapered-MMI regions (“ n ” in dark lines) with Λ = 380 nm , D = 222 nm .

Fig. 4
Fig. 4

Measured normalized TE-polarized transmittances for the original (a) and tapered (b) splitters with different diameters ( 222 nm , 208 nm and 195 nm ) in PhCW. Black red and blue curves show the transmittance of the individual output ports and cyan curves show the total transmittance. All transmittances are normalized to the same length W1 PhCW.

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