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Broadband angular measurement of rectangular photonic crystal superprisms

Broadband angular measurement of rectangular photonic crystal superprisms
Broadband angular measurement of rectangular photonic crystal superprisms
We demonstrate the fabrication, characterization and simulation of visible wavelength superprism devices in photonic crystal waveguides. We studied the super refraction dependence on lattice symmetry orientation and for propagation angles close to the main symmetry orientation. A variety of rectangular lattices devices with various pitches and hole diameters as well as number of rows have been fabricated. We used our previously developed automated broadband spectral and angular measurement to map the chromatic refractivity. We found the refraction angles and sign to be dependent on the lattice orientation and bandgap. As the lattice was rotated away from the main symmetry direction the magnitude of the angular dispersion increased indicating enhanced super-refractive properties away from symmetry direction. We found the chromatic refraction to be up to 1°/nm close to the band edge of the principal bandgaps, 10x more than equivalent gratings, and 100x more than equivalent prisms [[xiv]]. Dispersion curve obtained from plane wave simulation allowed us to model the Bloch mode propagation directions in the periodic structure. We found these simple models to be in excellent agreement with the experimental results, allowing us to design a range of effective superprism devices.
0277-786X
67-73
International Society for Optical Engineering
Perney, Nicholas M.
86643365-c604-44ac-85bb-bff67beb7fe0
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Cattaneo, Francesco
72ee715f-508b-4608-af33-ab82d2f5ecf7
Netti, Maria C.
3f98b493-5eeb-4d09-a87d-4fa14488534a
Charlton, Martin D.
fcf86ab0-8f34-411a-b576-4f684e51e274
Zoorob, Majd E.
5917e55e-58ba-49c6-b801-f9aa1573850a
Parker, Greg J.
edf88b88-ba05-48a5-8ae4-d6d6aa984364
Adibi, Ali
Lin, Shawn-Yu
Scherer, Axel
Perney, Nicholas M.
86643365-c604-44ac-85bb-bff67beb7fe0
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Cattaneo, Francesco
72ee715f-508b-4608-af33-ab82d2f5ecf7
Netti, Maria C.
3f98b493-5eeb-4d09-a87d-4fa14488534a
Charlton, Martin D.
fcf86ab0-8f34-411a-b576-4f684e51e274
Zoorob, Majd E.
5917e55e-58ba-49c6-b801-f9aa1573850a
Parker, Greg J.
edf88b88-ba05-48a5-8ae4-d6d6aa984364
Adibi, Ali
Lin, Shawn-Yu
Scherer, Axel

Perney, Nicholas M., Baumberg, Jeremy J., Cattaneo, Francesco, Netti, Maria C., Charlton, Martin D., Zoorob, Majd E. and Parker, Greg J. (2005) Broadband angular measurement of rectangular photonic crystal superprisms. Adibi, Ali, Lin, Shawn-Yu and Scherer, Axel (eds.) In Photonic Crystal Materials and Devices III. vol. 5733, International Society for Optical Engineering. pp. 67-73 . (doi:10.1117/12.588616).

Record type: Conference or Workshop Item (Paper)

Abstract

We demonstrate the fabrication, characterization and simulation of visible wavelength superprism devices in photonic crystal waveguides. We studied the super refraction dependence on lattice symmetry orientation and for propagation angles close to the main symmetry orientation. A variety of rectangular lattices devices with various pitches and hole diameters as well as number of rows have been fabricated. We used our previously developed automated broadband spectral and angular measurement to map the chromatic refractivity. We found the refraction angles and sign to be dependent on the lattice orientation and bandgap. As the lattice was rotated away from the main symmetry direction the magnitude of the angular dispersion increased indicating enhanced super-refractive properties away from symmetry direction. We found the chromatic refraction to be up to 1°/nm close to the band edge of the principal bandgaps, 10x more than equivalent gratings, and 100x more than equivalent prisms [[xiv]]. Dispersion curve obtained from plane wave simulation allowed us to model the Bloch mode propagation directions in the periodic structure. We found these simple models to be in excellent agreement with the experimental results, allowing us to design a range of effective superprism devices.

Full text not available from this repository.

More information

Published date: April 2005
Additional Information: Event Dates: 22nd - 27th January
Venue - Dates: Photonic Crystal Materials and Devices III, 2005-01-24 - 2005-01-24
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 260109
URI: https://eprints.soton.ac.uk/id/eprint/260109
ISSN: 0277-786X
PURE UUID: 7aa8cb9d-1a01-4c45-b485-50228547d32e

Catalogue record

Date deposited: 15 Nov 2004
Last modified: 04 Dec 2018 17:30

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