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The article overviews the main properties, fabrication techniques and ares of application of long-period fiber gratings. The basic theoretical equations describing spectral properties of the gratings are given. Experimental investigation of the cladding modes excited by long-period gratings, as well as sensitivity of the long-period grating spectrum to external perturbations are discussed. The most common fabrication techniques of long-period gratings are examined with reference to their advantages and disadvantages. The most important applications of long- period gratings are discussed. Particular attention is paid to the recent results obtained with participation of the authors.
Sergei A. Vasiliev andOleg I. Medvedkov
"Long-period refractive index fiber gratings: properties, applications, and fabrication techniques", Proc. SPIE 4083, Advances in Fiber Optics, (17 May 2000); https://doi.org/10.1117/12.385648
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Sergei A. Vasiliev, Oleg I. Medvedkov, "Long-period refractive index fiber gratings: properties, applications, and fabrication techniques," Proc. SPIE 4083, Advances in Fiber Optics, (17 May 2000); https://doi.org/10.1117/12.385648