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Optics Letters

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  • Vol. 36, Iss. 16 — Aug. 15, 2011
  • pp: 3058–3060

Relaxed fabrication tolerance for self-imaging photonic crystal waveguide splitters using a tapered multimode interference region

Min Zhang, Asger Christian Krüger, Nathaniel Groothoff, Thomas Balle, and Martin Kristensen  »View Author Affiliations


Optics Letters, Vol. 36, Issue 16, pp. 3058-3060 (2011)
http://dx.doi.org/10.1364/OL.36.003058


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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 27 nm . The output power is well-balanced to within 1 dB . The effective bandwidth of the splitters shifts only around 13 nm , for a reduction of 10 nm 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

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: April 28, 2011
Revised Manuscript: June 14, 2011
Manuscript Accepted: July 8, 2011
Published: August 8, 2011

Citation
Min Zhang, Asger Christian Krüger, Nathaniel Groothoff, Thomas Balle, and Martin Kristensen, "Relaxed fabrication tolerance for self-imaging photonic crystal waveguide splitters using a tapered multimode interference region," Opt. Lett. 36, 3058-3060 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-16-3058


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