Using single-mode fibres in astronomy enables revolutionary techniques including single-mode interferometry and spectroscopy. However, injection of seeing-limited starlight into single mode photonics is extremely difficult. One solution is Adaptive Injection (AI). The telescope pupil is segmented into a number of smaller subapertures each with size ∼ r 0, such that seeing can be approximated as a single tip / tilt / piston term for each subaperture, and then injected into a separate fibre via a facet of a segmented MEMS deformable mirror. The injection problem is then reduced to a set of individual tip tilt loops, resulting in high overall coupling efficiency.
|Title of host publication||Ground-Based and Airborne Instrumentation for Astronomy VI|
|Editors||Christopher J. Evans, Luc Simard, Hideki Takami|
|Place of Publication||Washington, US|
|Number of pages||8|
|Publication status||Published - 2016|
|Event||Ground-Based and Airborne Instrumentation for Astronomy VI - Edinburgh, United Kingdom|
Duration: 26 Jun 2016 → 30 Jun 2016
|Name||Proceedings of SPIE|
|Other||Ground-Based and Airborne Instrumentation for Astronomy VI|
|Period||26/06/16 → 30/06/16|
Bibliographical noteCopyright 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
- Adaptive optics
- Single mode Fibres
- Single mode waveguides