PIMMS: Photonic integrated multimode microspectrograph

Reference:

Bland-Hawthorn, J., Lawrence, J., Robertson, G., Campbell, S., Pope, B., Betters, C., Leon-Saval, S., Birks, T., Haynes, R., Cvetojevic, N. and Jovanovic, N., 2010. PIMMS: Photonic integrated multimode microspectrograph. Proceedings of SPIE - The International Society for Optical Engineering, 7735, 77350N.

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Official URL:

http://dx.doi.org/10.1117/12.856347

Abstract

We present the first integrated multimode photonic spectrograph, a device we call PIMMS #1. The device comprises a set of multimode fibres that convert to single-mode propagation using a matching set of photonic lanterns. These feed to a stack of cyclic array waveguides (AWGs) that illuminate a common detector. Such a device greatly reduces the size of an astronomical instrument at a fixed spectroscopic resolution. Remarkably, the PIMMS concept is largely independent of the telescope diameter, input focal ratio and entrance aperture - i.e. one size fits all! The instrument architecture can also exploit recent advances in astrophotonics (e.g. OH suppression fibres). We present a movie of the instrument's operation and discuss the advantages and disadvantages of this approach.

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