| 摘要 |
PROBLEM TO BE SOLVED: To provide a waveguide which uses a silicon oxide film containing a silicon nanocrystal, and also an optical amplifying method using the silicon oxide film containing the silicon nanocrystal. SOLUTION: The optical amplifying method uses a silicon oxide (SiOx) containing a silicon nanocrystal. In the optical amplifying method, an SiOx (x is 2 or less) waveguide is formed which contains the silicon nanocrystal having a quantum efficiency exceeding 10%. A light input signal having a first power with a first wavelength of 700-950 nm is supplied to the SiOx waveguide containing the silicon nanocrystal. The SiOx waveguide containing the silicon nanocrystal is excited by a light source having a second power with a second wavelength of 250-550 nm. As a result, a light output signal having a third power larger than the first power is generated with the first wavelength. For example, the third power increases with the length of an SiOx waveguide stripe containing the silicon nanocrystal. COPYRIGHT: (C)2010,JPO&INPIT
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