Diffraction gratings utilizing total internal reflection facets in Littrow configuration

The shape of the grooves of a diffraction grating can be designed to take advantage of total internal reflection. We demonstrate the effectiveness of the total internal reflection (TIR) grating numerically for the bulk optic case. The results indicate that the efficiency of the retrodiffracted order...

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Bibliographic Details
Published in:IEEE photonics technology letters 1999-01, Vol.11 (1), p.84-86
Main Authors: Smith, M.S.D., McGreer, K.A.
Format: Article
Language:English
Subjects:
Diffraction gratings
Gratings (spectra)
Grooves
Integrated optics
Mathematical models
Metallizing
Noise levels
Optical diffraction
Optical fiber communication
Optical films
Optical filters
Optical reflection
Optical waveguides
Photonics
Reflection
Shape
Wavelength division multiplexing
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Summary:The shape of the grooves of a diffraction grating can be designed to take advantage of total internal reflection. We demonstrate the effectiveness of the total internal reflection (TIR) grating numerically for the bulk optic case. The results indicate that the efficiency of the retrodiffracted order is enhanced by as much as 11 dB when the TIR grating design is used in place of a blazed grating with no facet metallization.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.736401