Optical communications – Multiplex – Time division
Reexamination Certificate
2006-08-29
2006-08-29
Phan, Hanh (Department: 2613)
Optical communications
Multiplex
Time division
C398S079000, C398S045000, C398S052000, C398S053000, C398S158000, C398S161000, C398S176000, C385S001000, C385S002000, C385S004000, C385S005000, C385S014000, C385S015000, C250S227120
Reexamination Certificate
active
07099587
ABSTRACT:
A delayed optical signal is generated from an inputted optical signal by cyclically transmitting the inputted optical signal between at least two ends of an optical medium and outputting the inputted optical signal from one of the ends of the optical medium after at least one transmission cycle via the optical medium. Each transmission of the inputted optical signal in a direction via the optical medium is carried out over a wavelength resource that is different from a wavelength resource used in a preceding transmission of the inputted optical signal in a direction via the optical medium. Interference among repeated transmissions of the inputted optical signal via the optical medium is therefore minimized or even avoided. Related apparatus and method are also described.
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