Absorption losses in glasses and glass fibre waveguides

Optical communication fiber waveguide fabrication: A review

“…Typical glass systems employed by the British Post Office [24,251 are sodium calcium silicate (Na, 0-CaO-SO,) and sodium borosilicate (Na, 0-B,O,-SiO,). Much of the recent emphasis is placed on the latter system [ 261 because it requires lower operating temperatures (-850°C) compared with those needed by the sodium calcium silicate system (-1 100°C).…”

“…24, 251 Potential impurity contamination due to leaching (typically < 5 ppm) from the platinum crucible can be avoided by using a high-purity fused-silica crucible within a silica enclosure [321 or by inductive heating,[34] simultaneously sweeping the furnace with a purging gas.An alternate novel approach[35 I for minimizing contamination involves the use of high-frequency (4-5 MHz at 15 kW) induction Downloaded by [Monash University Library] at 20:47 19 October 2012…”

Specific absorption coefficient of cobalt(II) in (TeO2)0.80(MoO3)0.20 glass

“…Available data for tellurite glasses are limited to the shape and width of the absorption bands of cobalt in the TeO 2 -Nb 2 O 5 system [4]. Absorption by transition metals has also been studied in quartz [5], silicate [6], germanate [7], and fluoride [8] glasses. Data on absorption by cobalt in tellurite-molybdate glasses are not available in the literature.…”

Synthesis optical properties of novel TeO2 based glasses

“…The interference filters need high technology of fabrication [2] while the absorption filters can be fabricated from glass using the melt-quench method [3,4]. 3d transition metals ions (V, Cr, Mn, Fe, Co, Ni and Cu) giving rise to intense absorption in the visible and near infrared region [3][4][5][6][7][8][9].…”