| 摘要 |
There is disclosed a super-high speed light transmission method making use of quasi-solitons. Chirped stationary pulses are transmitted through a fiber (OFa-1, OFb-1, OFx-1). At a position where the effect of the chirp becomes weak and the sign of the chirp reverses, the sign of the chirp is reversed by a dispersion compensation fiber (OFa-2, OFb-2, OFx-2) or fiber grating connected to the fiber in order to recover the initial chirp. The dispersion profile of each of the fibers (OFa-1, OFa-2, OFb-1, OFb-2, OFx-1, OFx-2) is properly controlled in order to produce stationary quasi-solitons having a stable pulse shape. The method can prevent widening of pulses, which would otherwise occur due to dispersion. <IMAGE>
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