Letter abstract


Nature Materials 5, 532 - 536 (2006)
Published online: 25 June 2006 | doi:10.1038/nmat1674

Subject Categories: Semiconductors | Optical, photonic and optoelectronic materials

Large-scale optical-field measurements with geometric fibre constructs

Ayman F. Abouraddy1, Ofer Shapira1,2, Mehmet Bayindir1,5, Jerimy Arnold2, Fabien Sorin3, Dursen S. Hinczewski3, John D. Joannopoulos1,4 & Yoel Fink1,3

Top

Optical fields are measured using sequential arrangements of optical components such as lenses, filters, and beam splitters in conjunction with planar arrays of point detectors placed on a common axis1. All such systems are constrained in terms of size, weight, durability and field of view. Here a new, geometric approach to optical-field measurements is presented that lifts some of the aforementioned limitations and, moreover, enables access to optical information on unprecedented length and volume scales. Tough polymeric photodetecting fibres drawn from a preform2 are woven into light-weight, low-optical-density, two- and three-dimensional constructs that measure the amplitude and phase of an electromagnetic field on very large areas. First, a three-dimensional spherical construct is used to measure the direction of illumination over 4pi steradians. Second, an intensity distribution is measured by a planar array using a tomographic algorithm. Finally, both the amplitude and phase of an optical wave front are acquired with a dual-plane construct. Hence, the problem of optical-field measurement is transformed from one involving the choice and placement of lenses and detector arrays to that of designing geometrical constructions of polymeric, light-sensitive fibres.

Top
  1. Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  2. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  3. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  4. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  5. Present address: Department of Physics, Bilkent University, Ankara 06800, Turkey

Correspondence to: Yoel Fink1,3 e-mail: yoel@mit.edu

MORE ARTICLES LIKE THIS

These links to content published by NPG are automatically generated.

NEWS AND VIEWS

X-Ray optics Clarity through a keyhole

Nature Physics News and Views (01 May 2008)

Imaging technology Harmonic pictures in a flash

Nature News and Views (04 Oct 2007)

See all 3 matches for News And Views