Photorefractive effect and photoinduced x(2) grating formation in germanosilicate core fibers codoped with nitrogen in MCVD process

Eugeni M. Dianov; Alexei N. Guryanov; Vladimir F. Khopin; Valery M. Mashinsky; Oleg I. Medvedkov; Oleg D. Sazhin; Sergei A. Vasiliev; Nikolai N. Vechkanov; Yu. P. Yatsenko

doi:10.1117/12.385641

17 May 2000 Photorefractive effect and photoinduced χ⁽²⁾grating formation in germanosilicate core fibers codoped with nitrogen in MCVD process

Eugeni M. Dianov, Alexei N. Guryanov, Vladimir F. Khopin, Valery M. Mashinsky, Oleg I. Medvedkov, Oleg D. Sazhin, Sergei A. Vasiliev, Nikolai N. Vechkanov, Yu. P. Yatsenko

Author Affiliations +

Proceedings Volume 4083, Advances in Fiber Optics; (2000) https://doi.org/10.1117/12.385641
Event: Advances in Fiber Optics, 2000, Moscow, Russian Federation

Abstract

Single-mode germanosilicate-core optical fibers were fabricated by the MCVD process modified by sintering of the deposited soot in a reduced atmosphere (helium- or nitrogen- containing one). The fibers showed a higher photoinduced refractive index change and a higher efficiency of (chi) ⁽²) formation as compared to an ordinary germanosilicate fiber. The sintering process in nitrogen and helium atmospheres was shown to increase the concentration of germanium oxygen-deficient centers. Besides, nitrogen appears to enter into the glass network in a sufficient concentration to modify the glass network and to additionally increase photosensitivity of the fibers.

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Eugeni M. Dianov, Alexei N. Guryanov, Vladimir F. Khopin, Valery M. Mashinsky, Oleg I. Medvedkov, Oleg D. Sazhin, Sergei A. Vasiliev, Nikolai N. Vechkanov, and Yu. P. Yatsenko "Photorefractive effect and photoinduced χ⁽²⁾grating formation in germanosilicate core fibers codoped with nitrogen in MCVD process", Proc. SPIE 4083, Advances in Fiber Optics, (17 May 2000); https://doi.org/10.1117/12.385641

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