| 摘要 |
PURPOSE:To enable the waveform compression and intensity amplification of a signal optical pulse with small-sized, simple constitution by making a signal optical pulse and an exciting optical pulse incident on an optical fiber for compression and compressing the pulse width of the signal optical pulse, and making it incident on an optical fiber to which rare earth elements are added and amplifying the signal optical pulse. CONSTITUTION:The optical fiber 7 for signal optical pulse compression is interposed between the terminal 3B of an optical coupler 3 and the erbium-added optical fiber 2, its one terminal is connected to a terminal B, and the other terminal is connected to one end of the erbium-added optical fiber 2. Then the signal optical pulse and exciting optical pulse are made incident on the optical fiber 7 for compression at the same time, the signal optical pulse has a chirp by non-linear optical effect caused by the exciting optical pulse, and the pulse width of the signal optical pulse is compressed by the effect of abnormal dispersion. Then the compressed signal optical pulse and exciting light pulse are made incident on the optical fiber 2 to which rare earth elements are added and the signal optical pulse is amplified by excited amplification effect caused by erbium. Consequently, the signal optical pulse can be relayed by the device of small-sized, simple constitution. |
