Optical communications – Transmitter – Including compensation
Reexamination Certificate
2006-10-03
2006-10-03
Phan, Hanh (Department: 2613)
Optical communications
Transmitter
Including compensation
C398S147000, C398S158000, C398S159000, C398S183000, C398S192000, C398S199000, C398S208000
Reexamination Certificate
active
07116918
ABSTRACT:
In a system connecting a transmitter and a receiver using transmission paths and repeaters (in-line amplifiers), red chirping whose α parameter is positive is performed for an optical signal on a transmitting side. Each of the repeaters includes a dispersion-compensator for compensating the amount of dispersion on a preceding transmission path. The amount of dispersion compensation of the dispersion-compensator included in the transmitter is made constant. The dispersion-compensator included in the receiver is arranged in order to compensate the amount of dispersion on a preceding transmission path. A spread of a pulse width on a transmission path can be efficiently compensated by using the compensation capability of the dispersion-compensators and the red chirping on the transmitting side.
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Kawasaki Yumiko
Miyauchi Akira
Okano Satoru
Yamane Kazuo
Fujitsu Limited
Phan Hanh
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