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Ultrafast laser inscription of a 121-waveguide fan-out for astrophotonics.

Scottish Universities Physics Alliance (SUPA), Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
Optics Letters (Impact Factor: 3.18). 06/2012; 37(12):2331-3. DOI: 10.1364/OL.37.002331
Source: PubMed

ABSTRACT Using ultrafast laser inscription, we report the fabrication of a prototype three-dimensional 121-waveguide fan-out device capable of reformatting the output of a 120-core multicore fiber (MCF) into a one-dimensional linear array. When used in conjunction with an actual MCF, we demonstrate that the reformatting function using this prototype would result in an overall through put loss of ≈7.0  dB. However, if perfect coupling from the MCF into the fan-out could be achieved, the reformatting function would result in an overall loss of only ≈1.7  dB. With adequate development, similar devices could efficiently reformat the output of so-called "photonic lanterns" fabricated using highly multicore fibers.

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Available from: Joss Bland-Hawthorn, Aug 13, 2014
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