Theoretical calculations provided for further elaboration of sensitive elements for fiberoptic sensors of physical values are stated at present paper. Technological possibilities of such element creation and their further application are considered. Theoretical analysis shown that reflection coefficient from fiber cladding gratings is balanced with different types of gratings because of possibility of creation of considerable equivalent periodical change of refractive index, though optical wave amplitude on the fiber cladding less than on the fiber core. Fiber cladding gratings can be formed by holographic method using photosensitive medium and blue-green lasers. The case of corrugated boundary between fiber core and cladding or between fiber cladding and external medium, for e.g. water contaminated by particles of heavy metals, which have influence on refractive index and absorption of waves in fiber is possible.
Analysis of light propagation in fiber cladding gratings
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V ; 1999 ; Denver,CO,United States
Proc. SPIE ; 3801
1999-09-20
Conference paper
Electronic Resource
English
Analysis of light propagation in fiber cladding gratings [3801-18]
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