Optical communications – Multiplex – Time division
Reexamination Certificate
2008-03-26
2009-11-24
Curs, Nathan M (Department: 2613)
Optical communications
Multiplex
Time division
C398S098000
Reexamination Certificate
active
07623791
ABSTRACT:
An optical signal multiplexing device includes a delay-amount adjusting unit that converts wavelengths of optical signals to be multiplexed when the optical signals are obtained, and adjusts delay amounts of the optical signals by passing the wavelength-converted optical signals through waveguides that generate propagation delays corresponding to the wavelengths in the optical signals. The optical signal multiplexing device also includes a waveform-degradation compensation unit that compensates for degradation of a waveform of the optical signals while keeping a difference of propagation delay times between the optical signals delay amounts of which are adjusted by the delay-amount adjusting unit.
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Curs Nathan M
Fujitsu Limited
Fujitsu Patent Center
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