Design of the optical fiber grating with the equivalence rule

Based on grating electromagnetic theory, initial values of the grating groove were computed with grating equivalence rule. The design was then optimized with the diffraction efficiency contour method. Gratings of arbitrary groove shape with a geometry symmetry center can be designed in this way. As...

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Bibliographic Details
Published inHong wai yu hao mi bo xue bao Vol. 33; no. 2; pp. 158 - 163
Main Authors Zhang, Shan-Wen, Pan, Ming-Zhong
Format Journal Article
LanguageChinese
Published 01.04.2014
Subjects
Diffraction efficiency
Diffraction gratings
Gratings (spectra)
Grooves
Infrared
Optical fibers
Rectangles
Shape
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Summary:Based on grating electromagnetic theory, initial values of the grating groove were computed with grating equivalence rule. The design was then optimized with the diffraction efficiency contour method. Gratings of arbitrary groove shape with a geometry symmetry center can be designed in this way. As examples, four kinds of groove gratings were designed and fabricated with groove shapes of sine, rectangle and trapeze. The peak efficiency of TM mode for sine groove grating is 95% theoretically and 92% experimentally in C band.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1001-9014
DOI:10.3724/SP.J.1010.2014.00158