Glass composition containing bismuth and method of amplifying signal light therewith
A composition and signal light technology, applied in optics, light guides, lasers, etc., can solve problems such as the reduction of Bi luminous intensity, and achieve the effects of easy optical fiberization, simplified manufacturing equipment, and easy temperature management.
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Embodiment 1
[0052] Composition as shown in table 2, weigh silicon oxide, aluminum oxide, bismuth oxide (Bi 2 o 3 ), yttrium oxide, germanium oxide, titanium oxide, boron oxide, phosphorus pentoxide (P 2 o 5 ), lithium carbonate, and mix well in a mortar and mortar. From the glass raw material powder obtained in this way, the glass raw material powder was filled in the quartz glass tube of inner diameter 2mm, this glass tube was heated by the infrared heating apparatus, and it cooled, and sample glasses 1-24 were obtained. The colors of the sample glasses 1 to 24 are all reddish brown. This color is characteristic of glass in which fluorescence derived from Bi can be confirmed in the infrared region.
[0053] For each composition shown in Table 2, the "melting point" (raw material melting temperature) of the glass raw material was measured. The measurement of the melting point is carried out as follows: the glass tube filled with glass raw material powder is heated by an infrared heat...
Embodiment 2
[0061] Glass raw material powders having the compositions shown in Table 3 were prepared using the same raw materials as in Example 1, and the glass raw material powders were fused in the same manner as in the preliminary test to obtain respective sample glasses. For each sample glass, the emission intensity was measured in the same manner as described above. In Example 2, in addition to measuring the intensity of fluorescence with a wavelength of 1250 nm based on excitation light with a wavelength of 800 nm, the intensity of fluorescence with a wavelength of 1140 nm based on excitation light with a wavelength of 500 nm was also measured.
[0062] Table 3 summarizes the luminescence intensities of the fluorescent light. In Table 3, at the respective Bi 2 o 3 concentration, passed to remove GeO-free 2 and TiO 2 Other than this, it is the same composition (Bi 2 o 3 -Al 2 o 3 -Y 2 o 3 -SiO 2 glass), or without GeO 2 and TiO 2 Similar composition of (Bi 2 o 3 -Al 2...
Embodiment 3
[0072] Sample glass having the composition shown in Table 4 was obtained in the same manner as in Example 2. For each sample glass, the emission intensity was measured in the same manner as described above, and gain measurement was further implemented. Table 4 shows the results. In addition, the gain measurement was performed by the following method using the device shown in FIG. 3 .
[0073] In the measurement system shown in FIG. 3 , signal light 61 with a wavelength of 1.3 μm is emitted from a laser diode 51 , and excitation light 62 with a wavelength of 0.8 μm is emitted from a laser diode 52 . The signal light 61 is reflected by the mirrors 72 and 73 , enters the wavelength selective mirror 74 , and passes through the mirror 74 . On the other hand, the excitation light 62 is reflected by the mirror 71 , enters the wavelength selective mirror 74 and is reflected by the mirror 74 . The wavelength selection mirror 74 is designed to transmit light with a wavelength of 1.3 ...
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