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US 6,643,603 B2Granted
Chromatic dispersion distribution measurement apparatus and method for the same
AssigneeAndo Electric Co., Ltd.
InventorsShoichi Aoki, Akio Ichikawa
Life of this patent
Estimating the term…
Abstract
A chromatic dispersion distribution measurement apparatus, comprises: a chromatic dispersion value calculation unit for calculating a plurality of actual chromatic dispersion values in an optical device at a plurality of wavelengths; and a chromatic dispersion interpolation unit for interpolating an expected chromatic dispersion value between the actual chromatic dispersion values calculated by the chromatic dispersion value calculation unit, in order to obtain a chromatic dispersion distribution as a function of wavelength.
Claims9
A chromatic dispersion distribution measurement apparatus, comprising:
- a plurality of light sources selected from the group consisting of two variable wavelength light sources and at least three fixed-wavelength light sources which emit lights having different wavelengths from one another;
- a chromatic dispersion distribution calculation unit for calculating a plurality of actual chromatic dispersion values in an optical device to be measured when a plurality of pairs of lights having different wavelengths from each other, which are emitted from the light sources, are inputted into the optical device to be measured;
- a chromatic dispersion interpolation unit for interpolating an expected chromatic dispersion value between the actual chromatic dispersion values calculated by the chromatic dispersion distribution calculation unit, in order to obtain a chromatic dispersion distribution at an optional wavelength and at an optional transmission distance along the optical device to be measured;
- a dispersion slope calculation unit for calculating a dispersion slope at the optional wavelength and at the optional transmission distance in accordance with the chromatic dispersion distribution;
- and
- a zero dispersion wavelength calculation unit for calculating a zero dispersion wavelength at the optional transmission distance in accordance with the chromatic dispersion distribution.
3 more elements
A chromatic dispersion distribution measurement method, comprising:
- calculating a plurality of actual chromatic dispersion values in an optical device to be measured when a plurality of pairs of lights having different wavelengths from each other are inputted into the optical device to be measured;
- interpolating an expected chromatic dispersion value between the calculated actual chromatic dispersion values, in order to obtain a chromatic dispersion distribution at an optional wavelength and at an optional transmission distance along the optical device to be measured;
- calculating a dispersion slope at the optional wavelength and at the optional transmission distance in accordance with the chromatic dispersion distribution;
- and
- calculating a zero dispersion wavelength at the optional transmission distance in accordance with the chromatic dispersion distribution.
2 more elements
A chromatic dispersion distribution measurement method, comprising:
- calculating a plurality of light sources selected from the group consisting of two variable wavelength light sources and at least three fixed-wavelength light sources which emit lights having different wavelengths from one another;
- calculating a plurality of actual chromatic dispersion values in an optical device to be measured when a plurality of pairs of lights having different wavelengths from each other, which are emitted from the light sources, are inputted into the optical device to be measured;
- interpolating an expected chromatic dispersion value between the actual chromatic dispersion values calculated by the chromatic dispersion distribution calculation unit, in order to obtain a chromatic dispersion distribution at an optional wavelength and at an optional transmission distance along the optical device to be measured;
- calculating a dispersion slope at the optional wavelength and at the optional transmission distance in accordance with the chromatic dispersion distribution;
- and
- calculating a zero dispersion wavelength at the optional transmission distance in accordance with the chromatic dispersion distribution.
3 more elements
A chromatic dispersion distribution measurement apparatus, comprising:
- a chromatic dispersion distribution calculation unit for calculating a plurality of actual chromatic dispersion values in an optical device to be measured when a plurality of pairs of lights having different wavelengths from each other are inputted into the optical device to be measured;
- a chromatic dispersion interpolation calculation unit for interpolating an expected chromatic dispersion value between the calculated actual chromatic dispersion values, in order to obtain a chromatic dispersion distribution at an optional wavelength and at an optional transmission distance along the optical device to be measured;
- a dispersion slope calculation unit for calculating a dispersion slope at the optional wavelength and at the optional transmission distance in accordance with the chromatic dispersion distribution;
- and
- a zero dispersion wavelength calculation unit for calculating a zero dispersion wavelength at the optional transmission distance in accordance with the chromatic dispersion distribution.
2 more elements
Dependencies are inferred from the claim text.