Ultrafast laser inscription of an integrated multimode-to-single-modes waveguide transition for astrophotonics

Reference:

Thomson, R. R., Birks, T. A., Leon-Saval, S. G., Kar, A. K. and Bland-Hawthorn, J., 2011. Ultrafast laser inscription of an integrated multimode-to-single-modes waveguide transition for astrophotonics. In: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC). Piscataway, NJ: IEEE.

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Official URL:

http://dx.doi.org/10.1109/CLEOE.2011.5943676

Abstract

Astrophotonics is the application of photonic principles to astronomical instrumentation, in order to reduce cost, size, weight and complexity while increasing performance. In astrophotonics the photonic lantern (PL) [1-4] is a remarkable photonic device which efficiently couples light between a multimode (MM) optical fibre and a set of degenerate single modes (SMs) which are guided by the cores of either individual SM fibres [1-3] or a multicore optical fibre [4]. If the SMs produced by the PL are arranged into a linear array [5], the PL facilitates the efficient collection of light from a telescope using a MM fibre and the low-loss reformatting of this light into a near diffraction limited input (in one axis) for a spectrometer [6].

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