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Two-dimensional photonic crystal material in fibre form

Two-dimensional photonic crystal material in fibre form
Two-dimensional photonic crystal material in fibre form
Photonic crystals are formed of periodically structured dielectric material, the pitch or period of the structure being of the order of the optical wavelength. A novel property of photonic crystal materials is they can be designed so as to exhibit photonic bandgaps, i.e. frequency ranges in which there are no propagating modes in the material. Some interesting consequences of such photonic band gaps occur for waves propagating out-of-plane in two-dimensionally materials. One possibility is to fabricate low-loss waveguides which guide soley by Bragg reflection. This could be done by using a 2-D structure which is effectively infinite in the third dimension, and which exhibits a bandgap in its transmission characteristics for waves which have a certain wavevector component beta =k along the structure. By purposefully introducing some kind of defect which is embedded in the crystal structure we can create a spatially localized region where such a wave can exist - a "defect state" appears in the band structure of the material. Light in this defect state would be unable to leak away from the defect through the crystal material, but would travel along the defect with propagation constant beta.
0-7803-3169-9
75
IEEE
Knight, J.C.
856fc97c-953c-4928-b389-40cdce61c078
Birks, T.A.
65bb633e-6fa2-40f7-a1c6-748bb5ca2178
Atkin, D.M.
8d4f9c4a-a4ab-405c-82bc-decd1dd59ac8
Russell, P.St.J.
77db5e8d-8223-4806-ae60-a106619a022a
Knight, J.C.
856fc97c-953c-4928-b389-40cdce61c078
Birks, T.A.
65bb633e-6fa2-40f7-a1c6-748bb5ca2178
Atkin, D.M.
8d4f9c4a-a4ab-405c-82bc-decd1dd59ac8
Russell, P.St.J.
77db5e8d-8223-4806-ae60-a106619a022a

Knight, J.C., Birks, T.A., Atkin, D.M. and Russell, P.St.J. (1996) Two-dimensional photonic crystal material in fibre form. In Conference on Lasers and Electro-optics Europe (CLEO 1996). IEEE. p. 75 .

Record type: Conference or Workshop Item (Paper)

Abstract

Photonic crystals are formed of periodically structured dielectric material, the pitch or period of the structure being of the order of the optical wavelength. A novel property of photonic crystal materials is they can be designed so as to exhibit photonic bandgaps, i.e. frequency ranges in which there are no propagating modes in the material. Some interesting consequences of such photonic band gaps occur for waves propagating out-of-plane in two-dimensionally materials. One possibility is to fabricate low-loss waveguides which guide soley by Bragg reflection. This could be done by using a 2-D structure which is effectively infinite in the third dimension, and which exhibits a bandgap in its transmission characteristics for waves which have a certain wavevector component beta =k along the structure. By purposefully introducing some kind of defect which is embedded in the crystal structure we can create a spatially localized region where such a wave can exist - a "defect state" appears in the band structure of the material. Light in this defect state would be unable to leak away from the defect through the crystal material, but would travel along the defect with propagation constant beta.

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More information

Published date: 1996
Venue - Dates: Conference on Lasers and Electro-optics Europe (CLEO 1996), Hamburg, Germany, 1996-09-01 - 1996-09-01

Identifiers

Local EPrints ID: 76854
URI: http://eprints.soton.ac.uk/id/eprint/76854
ISBN: 0-7803-3169-9
PURE UUID: fe5841cb-16ac-42b6-a9d3-72e06eeae19d

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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:38

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Contributors

Author: J.C. Knight
Author: T.A. Birks
Author: D.M. Atkin
Author: P.St.J. Russell

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