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Title: Waveguide-integrated photonic crystal spectrometer with camera readout

We demonstrate an infrared spectrometer based on waveguide-coupled nanocavity filters in a planar photonic crystal structure. The input light is coupled into the waveguide, from which spectral components are dropped into the cavities and radiated off-chip for detection on a commercial InGaAs camera. The spectrometer has a footprint of only 60 μm by 8 μm. The spectral resolution is about 1 nm in the operation bandwidth of 1522–1545 nm. By substituting the membrane material and structure parameters, this design can be easily extended into the visible regime and developed for a variety of highly efficient, miniature photonic applications.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [3] ;  [4]
  1. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139 (United States)
  2. Department of Physics, Columbia University, New York, New York 10027 (United States)
  3. Chromation Partners LLC, 18 Bridge Street Suite 2J, Brooklyn, New York 11201 (United States)
  4. (United States)
Publication Date:
OSTI Identifier:
22314467
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CAMERAS; CRYSTAL STRUCTURE; CRYSTALS; GALLIUM ARSENIDES; INDIUM ARSENIDES; INFRARED SPECTROMETERS; READOUT SYSTEMS; WAVEGUIDES