Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2005-01-31
2009-06-30
Sedighian, M. R. (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S183000, C398S198000, C398S051000
Reexamination Certificate
active
07555224
ABSTRACT:
An all-optical label swapping system and method superimposes a low-speed ASK label on top of a high-speed DC-balanced-line-coded ASK payload. An old ASK label is erased by modulating the combined payload and label signal with the inverse of the received ASK label. This ASK labeling technique requires only low speed external modulators and low speed optical receivers to perform the label swapping mechanism, and does not require sophisticated optical components.
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Lee San-Liang
Lin Yu-Min
Way Winston I.
Yuang Maria C.
Industrial Technology Research Institute
Rabin & Berdo P.C.
Sedighian M. R.
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