TY - GEN
T1 - Visible and near-infrared multilayer arrayed waveguide gratings
T2 - 2018 Optical and Infrared Interferometry and Imaging VI
AU - Douglass, G.
AU - Arriola, A.
AU - Gross, S.
AU - Withford, M. J.
AU - Le Coarer, E.
AU - Martin, G.
PY - 2018/7/9
Y1 - 2018/7/9
N2 - In this paper, we propose a multilayer arrayed waveguide gratings (AWG) for spectro-interferometry applications which were fabricated using the femtosecond laser direct writing technique. Individually these devices consisted on an array of 19 single mode waveguides, were designed for operation at 633nm, and have a measured free spectral range of 28nm and a resolution of 4 nm. The aim of this work is to show the potential of arrayed waveguides gratings (AWG) stacked in a vertical layered structure, in order to simultaneously achieve spectral dispersion and multi-telescope interferometry for astrophotonic applications (visibility vs baseline as a function of wavelength). In particular, with the fabrication of three independent AWG, we can address closure phase studies, an important tool for exoplanet detection in astronomy.
AB - In this paper, we propose a multilayer arrayed waveguide gratings (AWG) for spectro-interferometry applications which were fabricated using the femtosecond laser direct writing technique. Individually these devices consisted on an array of 19 single mode waveguides, were designed for operation at 633nm, and have a measured free spectral range of 28nm and a resolution of 4 nm. The aim of this work is to show the potential of arrayed waveguides gratings (AWG) stacked in a vertical layered structure, in order to simultaneously achieve spectral dispersion and multi-telescope interferometry for astrophotonic applications (visibility vs baseline as a function of wavelength). In particular, with the fabrication of three independent AWG, we can address closure phase studies, an important tool for exoplanet detection in astronomy.
KW - Electro-optic modulation
KW - Integrated Optics Beam Combiners
KW - mid-infrared waveguides
KW - Nulling Interferometry
KW - Photonic Crystals
KW - Spectro-Interferometry
UR - http://www.scopus.com/inward/record.url?scp=85052874109&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/CE1101018
UR - http://purl.org/au-research/grants/arc/DE160100714
U2 - 10.1117/12.2313156
DO - 10.1117/12.2313156
M3 - Conference proceeding contribution
AN - SCOPUS:85052874109
SN - 9781510619555
T3 - Proceedings of SPIE
BT - Optical and Infrared Interferometry and Imaging VI
A2 - Creech-Eakman, Michelle J.
A2 - Tuthill, Peter G.
A2 - Mérand, Antoine
PB - SPIE
CY - Bellingham, Washington
Y2 - 11 June 2018 through 15 June 2018
ER -