1.55 Glass for high and flat gain 1.55 optical amplifiers

摘要

The invention of the family (a family of) erbium for use in an optical signal amplifying relates to a phosphate-doped fluoro. 100 parts by weight, the composition with erbium oxide of up to 10 parts by weight, P ₂ O ₅ 15-40 parts by weight, based on, MgF ₂ 0-10 parts by weight, Al ₂ O ₃ 0-5 weight parts, CaF ₂ 0-25 parts by weight, 0-9 parts by weight of MgO, 0-25 parts by weight of SrF _2, 0-9 parts by weight of CaO, 0-20 parts by weight of BaF _2, SrO 0-9 parts by weight, 0-2 parts by weight of KHF ₂ , BaO 0-45 consists of the parts by weight, K ₂ TiF ₆ 0-2 parts by weight of AlF _3, and 5-25 wt. And the glass is compared to the glass of Figure 1 according to the present invention exhibits high gain and a very flat spectrum in the 1550nm bandwidth. These glass compositions are especially suitable for use in the optical amplifier of the fiber or plane in the WDM and the like applications.