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US 8,275,010 B2Granted
Optical pulse amplifier and optical pulse source
AssigneeFurukawa Electric Co., Ltd.
InventorsAtsushi Oguri, Shunichi Matsushita
Life of this patent
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Abstract
The pulse light source according to the present invention comprises: a seed pulse generator 1 for outputting an input pulse 10 as a seed pulse; a pulse amplifier 2; and a dispersion compensator 3 for dispersion compensating a light pulse output from the pulse amplifier 2. Moreover, the pulse amplifier 2 comprises a normal dispersion medium (DCF 4) and an amplification medium (EDF 5) that are multistage-connected alternately, for changing the input pulse 10 to a light pulse having a linear chirp and outputting the light pulse. Furthermore, an absolute value of the dispersion of the DCF 4 becomes to be larger than the absolute value of the dispersion of the EDF 5.
Claims29
A pulse amplifier, comprising:
- an amplification medium and a normal dispersion medium that are multistage-connected alternately, to change an input pulse to a light pulse having a linear chirp in a bandwidth range of wider than that for the input pulse and to output the light pulse,
- wherein the normal dispersion medium is a dispersion compensating medium and an absolute value of a dispersion of the normal dispersion medium is larger than an absolute value of a dispersion of the amplification medium,
- wherein each subsequent stage of the multi-stage connected media increases an intensity of the output light pulse, and
- wherein each subsequent stage of the multi-stage connected media widens a spectrum width of the output light pulse.
1 more element
A pulse light source, comprising:
- a seed pulse generator for outputting a seed pulse;
- and
- a pulse amplifier comprising an amplification medium and a normal dispersion medium that are multistage-connected alternately,
- wherein the pulse amplifier changes an input pulse to a light pulse having a linear chirp in a bandwidth range of wider than that for the input pulse and outputs the light pulse,
- wherein the normal dispersion medium is a dispersion compensating medium and an absolute value of a dispersion of the normal dispersion medium is larger than an absolute value of a dispersion of the amplification medium,
- wherein each subsequent stage of the multi-stage connected media increases an intensity of the output light pulse, and
- wherein each subsequent stage of the multi-stage connected media widens a spectrum width of the output light pulse.
4 more elements
A pulse amplifier, comprising:
- an amplification medium and a normal dispersion medium that are multistage-connected alternately, to change an input pulse to a light pulse having a linear chirp in a bandwidth range of wider than that for the input pulse and to output the light pulse,
- wherein the normal dispersion medium is a dispersion compensating medium and an absolute value of a dispersion of the normal dispersion medium is larger than an absolute value of a dispersion of the amplification medium,
- wherein the multistage-connected media include at least three in total of the amplification media and the normal dispersion media that are multistage-connected alternately, and
- wherein the multistage-connected media, which include at least three in total of the amplification media and the normal dispersion media, are arranged in a same package, a first isolator and a first wavelength divisional multiplex coupler are positioned at an input of the package, and a second isolator and a second wavelength divisional multiplex coupler are positioned at an output of the package.
1 more element
A pulse light source, comprising:
- a seed pulse generator for outputting a seed pulse;
- and
- a pulse amplifier comprising an amplification medium and a normal dispersion medium that are multistage-connected alternately,
- wherein the pulse amplifier changes an input pulse to a light pulse having a linear chirp in a bandwidth range of wider than that for the input pulse and outputs the light pulse,
- wherein the normal dispersion medium is a dispersion compensating medium and an absolute value of a dispersion of the normal dispersion medium is larger than an absolute value of a dispersion of the amplification medium,
- wherein the multistage-connected media include at least three in total of the amplification media and the normal dispersion media that are multistage-connected alternately, and
- wherein the multistage-connected media, which include at least three in total of the amplification media and the normal dispersion media, are arranged in a same package, a first isolator and a first wavelength divisional multiplex coupler are positioned at an input of the package, and a second isolator and a second wavelength divisional multiplex coupler are positioned at an output of the package.
4 more elements
Dependencies are inferred from the claim text.