Ultrafast Laser Inscription of a 121-Waveguide Fan-Out for Astrophotonics

Details Ultrafast Laser Inscription of a 121-Waveguide Fan-Out for Astrophotonics Ultrafast Laser Inscription of a 121-Waveguide Fan-Out for Astrophotonics

2012-03-20

arxiv.org/abs/1203.4584v1

Physics

Optics

Scientific paper

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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