Tellurite glass, optical amplifier, and light source

Details Tellurite glass, optical amplifier, and light source Tellurite glass, optical amplifier, and light source

C - Chemistry, Metallurgy

03

C

261/11, 345/43,

C03C 3/12 (2006.01) C03C 4/00 (2006.01) C03C 13/04 (2006.01) G02B 1/00 (2006.01) G02B 6/255 (2006.01) G02B 6/36 (2006.01) G02B 6/38 (2006.01) H01S 3/067 (2006.01) H01S 3/17 (2006.01) H04B 10/17 (2006.01) H01S 3/16 (2006.01) H01S 3/23 (2006.01)

Patent

CA 2229348

A tellurite glass as a glass material of optical fiber and optical waveguide has a composition of 0 < Bi2O3 <= 20 (mole %), 0 <= Na2O <= 35 (mole %), 0 <= ZnO <= 35 (mole %), and 55 <= TeO2 <= 90 (mole %). The tellurite glass allows an optical amplifier and a laser device that have broadband and low-noise characteristics. In a splicing structure of non silica-based optical fiber (as a first fiber) and a silica-based optical fiber (as a second fiber), optical axes of the first and second optical fibers are held at different angles .THETA.1 and .THETA.2 (.THETA.1 .noteq. .THETA.2) respectively from a vertical axis of a boundary surface between their spliced ends, and a relationship between the angles .THETA.1 and .THETA.2 satisfies Snell's law represented by an equation of sin .THETA.1 / sin .THETA.2 = n2 / n1 (where n1 is a refractive index of the first optical fiber and n2 is a refractive index of the second optical fiber) at the time of splicing the first and second optical fibers.

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