| 摘要 |
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 ëÑ 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 ëÑ approximately 74ù10-7. ^ EFFECT: increased refraction index and improved dispersion characteristics. ^ 32 cl, 3 tbl |
