Electrostriction mechanism of Bragg grating formation in germanosilicate fibres

Journal Article · Fri Nov 30 04:00:00 EST 2001 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2001V031N11ABEH002092· OSTI ID:21442859

Neustruev, V B ^[1]

---

1. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)

An electrostriction model is proposed for the photorefractive effect observed during the writing of Bragg gratings in germanosilicate fibres. Electrostriction is caused by a spatial charge grating formed upon the exposure to UV radiation. According to our estimate, the contribution of electrostriction to the photorefractive effect under real writing conditions is comparable with the contribution from colour centres and exceeds the contribution from the electrooptical effect by more than an order of magnitude. The electrostriction model explains the production of the IIA type Bragg grating in fibres with a high content of germanium in the core, as well as a number of effects that could not be explained earlier. (optical fibres)

• OSTI ID: 21442859
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 11 Vol. 31; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BRAGG REFLECTION
COLOR CENTERS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
ELEMENTS
FIBERS
GERMANIUM
GERMANIUM COMPOUNDS
GERMANIUM SILICATES
GRATINGS
METALS
OPTICAL FIBERS
OXYGEN COMPOUNDS
POINT DEFECTS
RADIATIONS
REFLECTION
REFRACTION
SILICATES
SILICON COMPOUNDS
ULTRAVIOLET RADIATION
VACANCIES