All-fibre wavefront sensor
arXiv:2204.14029 · doi:10.1093/mnras/stac1658
Abstract
We report on a tapered three-core optical fibre that can be used as a tip-tilt wavefront sensor. In this device, a coupled region of a few millimetres at the sensing tip of the fibre converts fragile phase information from an incoming wavefront into robust intensity information within each of the cores. The intensity information can be easily converted to linear wavefront error over small ranges, making it ideal for closed loop systems. The sensor uses minimal information to infer tip-tilt and is compatible with remote detector arrays. We explore its application within adaptive optics and present a validation case to show its applicability to astronomy.
arXiv comment7 pages, 6 figures
References in corpus (9)
- High Proper Motion Stars in the Vicinity of Sgr A*: Evidence for a Supermassive Black Hole at the Center of Our Galaxy
- A Giant Planet Candidate near a Young Brown Dwarf
- The Photonic Lantern
- Adaptive Optics for Astronomy
- Calibration and Pre-Compensation of Non-Common Path Aberrations for extreme Adaptive Optics
- An all-photonic focal-plane wavefront sensor
- Photonic spatial reformatting of stellar light for diffraction-limited spectroscopy
- Diffraction-limited integral-field spectroscopy for extreme adaptive optics systems with the Multi-Core fiber-fed Integral-Field Unit
- Demonstration of a photonic lantern low order wavefront sensor using an adaptive optics testbed