Article

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
throughput loss of approximately 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 approximately 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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