Title :
Diffraction gratings utilizing total internal reflection facets in Littrow configuration
Author :
Smith, M.S.D. ; McGreer, K.A.
Author_Institution :
Telecommun. Res. Labs., Winnipeg, Man., Canada
Abstract :
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.
Keywords :
diffraction gratings; integrated optics; light reflection; optical design techniques; reflectivity; Littrow configuration; TIR grating design; blazed grating; bulk optic case; diffraction grating groove shape design; diffraction gratings; facet metallization; retrodiffracted order; total internal reflection; total internal reflection facets; total internal reflection grating; Diffraction gratings; Integrated optics; Optical diffraction; Optical fiber communication; Optical films; Optical filters; Optical reflection; Optical waveguides; Shape; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
