Efficient Excitation of High-Purity Modes in Arbitrary Waveguide Geometries
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Mouthaan, R https://orcid.org/0000-0001-9817-0742
Christopher, PJ https://orcid.org/0000-0003-4034-2147
Pinnell, J https://orcid.org/0000-0003-4568-7937
Gordon, G https://orcid.org/0000-0002-7333-5106
Abstract
Abstract—A general method is presented for exciting discrete modes in waveguides of arbitrary geometry. Guided modes supported by the waveguide are first calculated using a finite difference frequency domain model. High efficiency holograms to excite these discrete modes are then generated using the Direct Search hologram generation algorithm. The Direct Search algorithm is optimised such that the inherent properties of waveguide modes are exploited to give faster execution times. A nodeless antiresonant photonic crystal fibre is considered as a test geometry, in which high-purity modes are experimentally excited and in-coupling efficiencies of up to 32.8% are obtained.
Description
Keywords
Optical waveguides, Geometry, Mathematical models, Eigenvalues and eigenfunctions, Refractive index, Propagation losses, Propagation constant, Holography, optical waveguides, fiber optics
Journal Title
Journal of Lightwave Technology
Conference Name
Journal ISSN
0733-8724
1558-2213
1558-2213
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publisher DOI
Rights
Sponsorship
Leverhulme Trust (RPG-2018-256)
EPSRC (via University of Southampton) (517129)
Cancer Research UK (24669)
EPSRC (EP/T008369/1)
Engineering and Physical Sciences Research Council (EP/L016567/1)
Engineering and Physical Sciences Research Council (EP/L015889/1)
EPSRC (via University of Southampton) (517129)
Cancer Research UK (24669)
EPSRC (EP/T008369/1)
Engineering and Physical Sciences Research Council (EP/L016567/1)
Engineering and Physical Sciences Research Council (EP/L015889/1)
The authors wish to thank the Engineering and Physical
Sciences Research Council (EP/L015889/1, EP/T008369/1,
EP/L016567/1, and EP/T008369/1) and the Leverhulme Trust
(Research Project Grant RPG-2018-256) for financial support
during the period of this research.