Astrophotonics and IR astronomy

Details Astrophotonics and IR astronomy Astrophotonics and IR astronomy

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..538o&link_type=abstract

Highlights of Astronomy, Volume 15, p. 538-538

Astronomy and Astrophysics

Astronomy

Scientific paper

Working in collaboration with industry, the University of Sydney, the Anglo-Australian Observatory and Macquarie University are developing new ‘astrophotonic’ solutions to problems in astronomical instrumentation. A key first step involves overcoming the limitations imposed by multimode (MM) optical fibres that have been used by astronomers for many years to transport or reformat light from the telescope focus to an optical spectrograph. These large-core MM fibres maximise light into an astronomical instrument but at the expense of propagating many unpolarized modes. Until recently, this has deterred the use of more complex in-fibre processing of the light since this is typically limited to single-mode (SM) propagation. A MM to SM converter, known as a ‘photonic lantern’, was first demonstrated by Leon-Saval et al. (2005). If the number of transverse modes equals the number of SM fibres, and if a gradual and adiabatic transition between the MM fiber and the ensemble of SM fibres can be achieved, lossless coupling can take place in either propagation direction. Noordegraaf et al. (2009) demonstrated an efficient 1 x 7 photonic lantern (1 MM input and 7 SM outputs) for the first time.

Affiliated with

Also associated with

No associations

Rating

Astrophotonics and IR astronomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Astrophotonics and IR astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Astrophotonics and IR astronomy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1485569