Optical parametric amplifier
AssigneeFujitsu Limited
InventorShigeki Watanabe
Life of this patent
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Abstract
In an optical parametric amplifier of the invention, pumping light which is amplified using a practical optical amplifier such as an EDFA is supplied together with signal light having a wavelength outside the amplification band of the optical amplifier, to a nonlinear optical medium via a multiplexer, to thereby amplify the signal light by an optical parametric amplification effect due to the pumping light in the nonlinear optical medium. As a result, the amplification band of a practical optical amplifier such as an EDFA, can be extended, and the noise characteristics can be improved.
Claims20
An optical parametric amplifier provided with a nonlinear optical medium to which is input signal light and pumping light for which the wavelength is different to that of said signal light, which amplifies the signal light by an optical parametric amplification effect due to the pumping light, and outputs this, said optical parametric amplifier comprising:
- a first optical amplifying section which has an amplification band which includes the wavelength of said pumping light, and which amplifies said pumping light and outputs this;
- and
- a pumping light supply section which supplies pumping light output from said first optical amplifying section, together with signal light having a wavelength outside the amplification band of said first optical amplifying section, to said nonlinear optical medium.
An optical parametric amplifier provided with a nonlinear optical medium to which is input signal light and pumping light for which the wavelength is different to that of said signal light, which amplifies the signal light by an optical parametric amplification effect due to the pumping light, and outputs this, said optical parametric amplifier comprising:
- a first optical amplifying section which has an amplification band which includes the wavelength of said signal light and the wavelength of said pumping light, and which amplifies said pumping light and outputs this;
- a second optical amplifying section which has an amplification band which includes the wavelength of said signal light and the wavelength of said pumping light, and which amplifies said signal light and outputs this;
- and
- a pumping light supply section which supplies pumping light output from said first optical amplifying section, together with signal light output from said second optical amplifying section to said nonlinear optical medium.
Dependencies are inferred from the claim text.