TY - JOUR
T1 - Second generation OH suppression filters using multicore fibres
AU - Haynes, R.
AU - Birks, T.A.
AU - Bland-Hawthorn, J.
AU - Cruz, J.L.
AU - Diez, A.
AU - Ellis, S.C.
AU - Haynes, D.
AU - Krämer, R.G.
AU - Mangan, B.J.
AU - Min, S.
AU - Murphy, D.F.
AU - Nolte, S.
AU - Olaya, J.C.
AU - Thomas, J.U.
AU - Trinh, C.Q.
AU - Tünnermann, A.
AU - Voigtländer, C.
PY - 2012
Y1 - 2012
N2 - Ground based near-infrared observations have long been plagued by poor sensitivity when compared to visible observations as a result of the bright narrow line emission from atmospheric OH molecules. The GNOSIS instrument recently commissioned at the Australian Astronomical Observatory uses Photonic Lanterns in combination with individually printed single mode fibre Bragg gratings to filter out the brightest OH-emission lines between 1.47 and 1.70μm. GNOSIS, reported in a separate paper in this conference, demonstrates excellent OH-suppression, providing very "clean" filtering of the lines. It represents a major step forward in the goal to improve the sensitivity of ground based near-infrared observation to that possible at visible wavelengths, however, the filter units are relatively bulky and costly to produce. The 2nd generation fibre OH-Suppression filters based on multicore fibres are currently under development. The development aims to produce high quality, cost effective, compact and robust OH-Suppression units in a single optical fibre with numerous isolated single mode cores that replicate the function and performance of the current generation of "conventional" photonic lantern based devices. In this paper we present the early results from the multicore fibre development and multicore fibre Bragg grating imprinting process.
AB - Ground based near-infrared observations have long been plagued by poor sensitivity when compared to visible observations as a result of the bright narrow line emission from atmospheric OH molecules. The GNOSIS instrument recently commissioned at the Australian Astronomical Observatory uses Photonic Lanterns in combination with individually printed single mode fibre Bragg gratings to filter out the brightest OH-emission lines between 1.47 and 1.70μm. GNOSIS, reported in a separate paper in this conference, demonstrates excellent OH-suppression, providing very "clean" filtering of the lines. It represents a major step forward in the goal to improve the sensitivity of ground based near-infrared observation to that possible at visible wavelengths, however, the filter units are relatively bulky and costly to produce. The 2nd generation fibre OH-Suppression filters based on multicore fibres are currently under development. The development aims to produce high quality, cost effective, compact and robust OH-Suppression units in a single optical fibre with numerous isolated single mode cores that replicate the function and performance of the current generation of "conventional" photonic lantern based devices. In this paper we present the early results from the multicore fibre development and multicore fibre Bragg grating imprinting process.
UR - http://www.scopus.com/inward/record.url?scp=84869764316&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1117/12.925923
U2 - 10.1117/12.925923
DO - 10.1117/12.925923
M3 - Article
AN - SCOPUS:84869764316
SN - 0277-786X
VL - 8450
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
M1 - 845011
T2 - Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II
Y2 - 1 July 2012 through 6 July 2012
ER -