Paper 13100-90
Paper 13100-90
Athermal package for OH suppression filters in astronomy - part 1: design
20 June 2024 • 13:20 - 13:35 Japan Standard Time | Room G214, North - 2F
Abstract
We present the design of an athermal package for fiber Bragg grating (FBG) filters for use in suppressing atmospheric hydroxyl (OH) emission lines in ground-based near-infrared (NIR) astronomy. We demonstrate the complete design methodology of such a package in a temperature range of of about 40 K (i.e. 263 K to 303 K). The design steps include, measurement of fiber characteristics, selection of possible combinations of materials for the temperature compensation, followed by determination of the nominal dimensions of the components. We finally discuss the novel aspects of the design to achieve high-precision thermal stabilization of these filters in the temperature range of interest. Our design is scalable to longer filter lengths and can also be used for other in-fiber devices for their stable operations in astronomical applications.
Presenter
Leibniz-Institut für Astrophysik Potsdam (Germany), Technische Univ. Berlin (Germany)
Carlos E. Rodriguez Alvarez received his Bachelor of Science in Mechanical Engineering from the University of Applied Sciences, Berlin in 2018, in his Bachelor thesis he focuses on the development and design of test benches for the photovoltaic industry. During his master studies he worked at the Fraunhofer Institute for Reliability and Microintegration (IZM) in the field of chip manufacturing. Afterwards he worked as a mechanical engineer at the Leibniz Institute for Astrophysics Potsdam (AIP), designing and integrating optomechanical systems for the 4-meter Multi-Object Spectroscopic Telescope (4MOST). He is currently working on his master's thesis at the Technische Universität Berlin and at the AIP in fiber Bragg grating filters for ground-based telescopes.