SYSTEM OF OPTICAL DEVICES WITH OPTICAL FIBRE MADE THROUGH FUSION Russian patent published in 2010 - IPC G02B6/02 

FIELD: physics; optics.

SUBSTANCE: invention relates to a system of optical devices with optical fibre made through fusion. The proposed optical system with optical fibre which is made through fusion includes at least one optical component containing optical fibres and at least one other optical component which interacts with light passing through the said optical fibres, which include a glass core with the following composition: La₂O₃ - 1-23 mol %, ZrO₂ - 1-10 mol %, WO₃ ≥ 2.5 mol %, ZnO - 1-15 mol %, BaO - 0-9 mol %, B₂O₃ - 20-70 mol %, Ta₂O₅ - 0-3 mol %, CaO - 0-7 mol %, PbO - 6-35 mol %, SiO₂ - 0-40 mol %, As₂O₃ and/or Sb₂O₃ - 0-0.1 mol %, Nb₂O₅ - 0-3 mol % and Al₂O₃ - 0-8 mol %. The glass core essentially does not contain CdO and is characterised by refraction index of at least 1.8, and coefficient of thermal expansion CTE ≥ approximately 74×10^-7.

EFFECT: increased refraction index and improved dispersion characteristics.

32 cl, 3 tbl