| 摘要 |
An optical pulse amplifier. The optical pulse amplifier includes: a first optical coupler having first, second, third and fourth ports, for outputting an optical pulse incident onto the first port to the second and third ports, and the optica l pulse re-incident from the second and third ports to the fourth port; a first gr ating connected to the second port of the first optical coupler, for reflecting the in cident optical pulse for each wavelength at a position satisfying the Bragg condition; a second grating connected to the third port of the first optical coupler and havi ng the same optical characteristics as the first grating, for reflecting the incide nt optical pulse for each wavelength at a position satisfying the Bragg condition; an optical amplifying portion connected to the fourth port of the first optical cou pler, for amplifying the optical pulse reflected by the first and second gratings and output by the fourth port of the first optical coupler; and a second optical cou pler having first, second, third and fourth ports, for outputting the optical pulse i ncident from the optical amplifying portion connected to the first port to the second an d third ports respectively connected to the first and second gratings, and the opt ical pulse re-incident after being reflected by the first and second gratings to the fourth port. Therefore, non-linear effect and spectral hole burning effect can be avoid ed through amplifying and broadening of the optical pulse, and there is less diffra ction loss and manufacturing the optical pulse amplifier is easy.
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