Photoinduced absorption and refractive-index induction in phosphosilicate fibres by radiation at 193 nm

被引：13
|
作者：
Rybaltovsky, A. A.
Sokolov, V. O.
Plotnichenko, V. G.
Lanin, A. V.
Semenov, S. L.
Gur'yanov, A. N.
Khopin, V. F.
Dianov, E. M.
机构：
[1] Russian Acad Sci, Fiber Opt Res Ctr, Moscow 119991, Russia
[2] Russian Acad Sci, Inst Chem High Pur Substances, Nizhnii Novgorod 603950, Russia
来源：
QUANTUM ELECTRONICS | 2007年 / 37卷 / 04期
关键词：
photosensitivity; induced absorption; fibre Bragg grating; phosphosilicate fibre;
D O I：
10.1070/QE2007v037n04ABEH013455
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The photoinduced room-temperature-stable increase in the refractive index by similar to 5 x 10(-4) at a wavelength of 1.55 mu m was observed in phosphosilicate fibres without their preliminary loading with molecular hydrogen. It is shown that irradiation of preliminary hydrogen-loaded fibres by an ArF laser at 193 urn enhances the efficiency of refractive-index induction by an order of magnitude. The induced-absorption spectra of preforms with a phosphosilicate glass core and optical fibres fabricated from them are studied in a broad spectral range from 150 to 5000 run. The intense induced-absorption band (similar to 800 cm(-1)) at 180 mn is found, which strongly affects the formation of the induced refractive index. The quantum-chemical model of a defect related to this band is proposed.
引用
收藏
页码：388 / 392
页数：5
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