Slow Light Based On-Chip High Resolution Fourier Transform Spectrometer For Geostationary Imaging of Atmospheric Greenhouse Gases, Phase I

Metadata Updated: May 2, 2019

Fourier transform spectroscopy (FTS) in infrared wavelength range is an effective measure for global greenhouse gas monitoring. However, conventional FTS instruments are bulky, heavy, and frail to environmental vibration, making them not suitable for satellite platforms. In this proposal, Omega Optics, Inc., together with the University of Texas at Austin, proposes a slow light enhanced on-chip FTS array covering compound spectral wavelength range (1.1 ~ 6.2 [HTML_REMOVED]m) for geostationary imaging of greenhouse gases. Each array pixel is made of a Mach-Zehnder interferometer, one arm of which is conventional waveguide and the other is 'fishbone' slow light waveguide. Harnessing the nonlinear phase enhancement generated by the slow light effect of the 'fishbone' waveguide, a resolution better than 0.2 cm-2 can be readily achieved within a limited chip surface. An N x M array can be formed by integrating N pixels on one silicon-on-sapphire chip and stacking M chips. Leveraging the CMOS compatible fabrication process, the imaging unit can be ~$10 per pixel and the whole imaging array weights ~ 30g. In addition, the whole module does not have moving parts, making it an ideal candidate for airborne and spaceborne applications.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93763
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 7d968731-8efd-48bd-8988-ffceba2513be
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-12-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash e91a47a633a393d17d02a013695581914eafa07c
Source Schema Version 1.1

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