C.-T. Lin, Y.-T. Huang, J.-Y. Huang, and H.-H. Lin (Taiwan)
integrated optics, concave grating, etched grating, wavelength-division multiplexing, polarization indepen dence.
Three-type designs of concave gratings, including Rowland-circle type, Taylor-expansion type, and recursive de nition type are discussed and their diffraction perfor mance are compared. Furthermore, the structure of compensation design for polarization independence in a planar waveguide structure is discussed.
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