Miniature spectrographs

Characterization of arrayed waveguide gratings for astronomy

Nick Cvetojevic*, Nemanja Jovanovic, Joss Bland-Hawthorn, Roger Haynes, Jon Lawrence

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

6 Citations (Scopus)

Abstract

We present results from a laboratory characterization of integrated photonic arrayed-waveguide grating chips, which are a modified version of commercial arrayed-waveguide grating multiplexors, for the purposes of creating an integrated photonic spectrograph. Using a robust probing setup we measure the peak total efficiency of the chips to be ∼75%. We measure the spectral resolution full-width half maximum to be 0.22 ± 0.02 nm, (giving R = λ/δλ = 7000 ± 700 at 1500 nm). For our device we find the free-spectral range is ∼60 nm and slightly larger than the full-width half-maximum of the efficiency profile (53 nm). Finally, we briefly discuss the importance of an integrated cross-dispersion component for the new integrated photonic spectrograph prototype.

Original languageEnglish
Title of host publicationModern Technologies in Space- and Ground-Based Telescopes and Instrumentation
EditorsEli Atad-Ettedgui, Dietrich Lemke
Place of PublicationBellingham, WA
PublisherSPIE
Pages77394H-1-77394H-7
Number of pages7
ISBN (Print)9780819482297
DOIs
Publication statusPublished - 2010
EventModern Technologies in Space- and Ground-Based Telescopes and Instrumentation - San Diego, CA, United States
Duration: 27 Jun 20102 Jul 2010

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume7739
ISSN (Print)0277-786X

Other

OtherModern Technologies in Space- and Ground-Based Telescopes and Instrumentation
CountryUnited States
CitySan Diego, CA
Period27/06/102/07/10

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