Apparatus for restoring clock signal by using circulator
AssigneeElectronics and Telecommunications Research Institute
InventorsSang Kyu LIM, Je Soo KO
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Abstract
Provided is an apparatus and method for restoring clock signals by using a circulator in an optical transmission system. The apparatus includes a circulator, which allows one of N types of input data signals having different transmission speeds to circulate in a single direction, band pass filters, which extract N types of clock frequency components respectively corresponding to each transmission speed of the N types of input data signals, and clock amplifiers, which amplify each of the N types of clock frequency components.
Claims7
An apparatus for restoring clock signals by using a circulator in an optical transmission system, the apparatus comprising:
- a circulator, which has N output ports and, upon receiving selectively one of N types of input data signals having N types of transmission speeds, allows the one input data signal to circulate in a single direction;
- and
- N types of band pass filters, which respectively extract N types of clock frequency components corresponding to the N types of transmission speeds,
- wherein each band pass filter passes the received input data signal when a clock frequency component corresponding to the transmission speed of the received input data signal corresponds to the pass-band of the band pass filter, and reflects the received input data signal to the circulator when the clock frequency component corresponding to the transmission speed of the received input data signal does not correspond to the pass-band of the band pass filter.
Dependencies are inferred from the claim text.