2009/10/22 by Jeremy Allington-Smith, J. R. Allington‐Smith, Joss Bland-Hawthorn +1 · 1 citation
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Advanced Fluorescence Microscopy Techniques #Astronomy #Computer science #Instrumentation (computer programming) #Optical Coherence Tomography Applications #Optics #Photonics #Physics #Spectral line #Spectrograph #Spectrometer #Spectroscopy #astro-ph.CO #astro-ph.IM
paper · pdf · doi:10.1111/j.1365-2966.2009.16173.x
Revised version submitted to MNRAS
arxiv created 2009/10/22 · openalex publication_date 2010/03/01 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A photonic spectrograph can be much smaller than a conventional spectrograph with the same resolving power. Individual devices can be integrated with optical fibres to improve the multiplex gain in astronomical spectroscopy. Although experimental devices have been tested, the parameter space where integrated photonic spectrographs offer significant advantage over traditional methods has not been defined. This paper gives an overview of the theory with verification by direct simulation using Fresnel propagation and quantifies the benefit for representative spectroscopic capabilities. We thereby confirm the advantage of photonic spectrographs, especially to the next generation of extremely large telescopes, and conclude that these devices may be important for the future development of astronomical instrumentation.