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A general design algorithm for low optical loss adiabatic connections in waveguides

Chen, Tong and Lee, Hansuek and Li, Jiang and Vahala, Kerry J. (2012) A general design algorithm for low optical loss adiabatic connections in waveguides. Optics Express, 20 (20). pp. 22819-22829. ISSN 1094-4087. doi:10.1364/OE.20.022819.

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Single-mode waveguide designs frequently support higher order transverse modes, usually as a consequence of process limitations such as lithography. In these systems, it is important to minimize coupling to higher-order modes so that the system nonetheless behaves single mode. We propose a variational approach to design adiabatic waveguide connections with minimal intermodal coupling. An application of this algorithm in designing the “S-bend” of a whispering-gallery spiral waveguide is demonstrated with approximately 0.05dB insertion loss. Compared to other approaches, our algorithm requires less fabrication resolution and is able to minimize the transition loss over a broadband spectrum. The method can be applied to a wide range of turns and connections and has the advantage of handling connections with arbitrary boundary conditions.

Item Type:Article
Related URLs:
URLURL TypeDescription
Lee, Hansuek0000-0002-0748-7662
Vahala, Kerry J.0000-0003-1783-1380
Additional Information:© 2012 Optical Society of America. Received 3 Jul 2012; revised 6 Sep 2012; accepted 7 Sep 2012; published 20 Sep 2012. We gratefully acknowledge the Defense Advanced Research Projects Agency under the iPhoD program, the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation, and also the Kavli Nanoscience Institute at Caltech. H. L. thanks the Center for the Physics of Information.
Group:Kavli Nanoscience Institute, Institute for Quantum Information and Matter
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
Caltech Center for the Physics of InformationUNSPECIFIED
Issue or Number:20
Classification Code:OCIS codes: (230.7370)Waveguide; (230.7390)Waveguide, planar; (220.0220) Optical design and fabrication
Record Number:CaltechAUTHORS:20121101-083137362
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35224
Deposited By: Tony Diaz
Deposited On:01 Nov 2012 21:56
Last Modified:09 Nov 2021 23:13

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