Wortelboer, Mariëlle (2025) The Efficiency of Single-mode Fibers for Spatial Filtering as Part of the Optical Design for the Large Interferometer For Exoplanets. Master's Thesis / Essay, Astronomy.
|
Text
mAST2025WortelboerCM.pdf Download (2MB) | Preview |
|
![[img]](https://fse.studenttheses.ub.rug.nl/style/images/fileicons/text.png) |
Text
Toestemming.pdf Restricted to Registered users only Download (188kB) |
Abstract
This thesis investigates the coupling efficiency of single-mode fibers as a function of key parameters: wavelength, wavefront error, and spectral bandwidth. The goal is to determine the viability and optimal implementation of single-mode fibers in the optical design of the large interferometer for exoplanets (LIFE). I performed simulations to model the propagation of light through a step-index single-mode fiber. Subsequently, I computed its coupling efficiency for various wavelengths, wavefront errors, and bandwidth configurations. The results identified key thresholds, including a maximum wavefront error of 0.2 μm and a required bandpass split near 9.1 μm, necessitating two fibers to cover the full wavelength range. While the findings support the integration of single-mode fibers into LIFE’s optical architecture, further research—especially experimental validation and assessment of additional optical components—is needed. This work establishes a foundation for the continued development of spatial filtering in space-based nulling interferometry.
| Item Type: | Thesis (Master's Thesis / Essay) |
|---|---|
| Supervisor name: | Lichtenberg, T. |
| Degree programme: | Astronomy |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 05 Aug 2025 07:40 |
| Last Modified: | 05 Aug 2025 07:40 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/36663 |
Actions (login required)
 |
View Item |