To fluorine the rare earths dope Tsuga lath and the glass ceramic product which are converted

摘要

(57) Abstract As for this invention, the fluorine conversion rare earths dope Tsuga lath composition and then the glass ceramic optical product, for example, the optical fiber guided wave road which possesses the communication window of 1300nm and 1550nm, it regards the fiber laser and the method of producing the active fiber amplifier. As for composition of this invention, 300-2,000 PR^{3+ of} density range between mass ppm and/or Dy³⁺ and 500-2,000 Ag ^{+ of} range of density between mass ppm; Or 500-5,000 the Er^{3+ of the} density range between mass ppm and 0-2,000 Ag ^{+ of the} density range between mass ppm is included. As for the monobalent silver ion, the fishing of ion electric charge the glass ceramic crystal which it can be brought together is offered. As for these compositions, under existing of the rare earths ion dopant of high density, cluster formation of the rare earths ion and the serving to which the effect of fluorescent passing time is decreased.