All-fibre wavefront sensor

T. A. Wright, S. Yerolatsitis, K. Harrington, R. J. Harris, T. A. Birks

Research output: Contribution to journalArticlepeer-review

5 Citations (SciVal)


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.

Original languageEnglish
Pages (from-to)5422-5428
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Early online date15 Jun 2022
Publication statusPublished - 1 Aug 2022


  • instrumentation: adaptive optics

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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