Title:
OPTICAL NETWORK
Document Type and Number:
Japanese Patent JP2790039
Kind Code:
B2
Abstract:
PURPOSE: To provide an optical network capable of handling signals of different transmission speed.
CONSTITUTION: Time division multiplexing devices 2-1 to 2-n perform time division multiplexes for plural input signals inputted in parallel in each of input terminals 1-1 to 1-n for equal transmission speed synchronizing with the synchronizing signals with frequencies which are different with each other from synchronizing signal generators 3-1 to 3-n and output time division multiplex signals of the frame frequencies which are different with each other. A wavelength division multiplex is performed for these plural time division signals in a star coupler 5 via electrooptical converters 4-1 to 4-n and optical signals of an arbitrary wavelength are selected by variable wavelength optical filters 6-1 to 6-n. Time division separators 9-1 to 9-n perform time division separation for input time division multiplex signals based on the clock signals of the input time division multiplex signals extracted by clock extracters 8-1 to R-n.
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Inventors:
KAJITANI SHUNICHI
Application Number:
JP12452394A
Publication Date:
August 27, 1998
Filing Date:
May 13, 1994
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H04J14/00; H04B10/27; H04B10/272; H04B10/556; H04J4/00; H04J14/02; H04J14/04; H04J14/06; (IPC1-7): H04J14/00; H04B10/00; H04J4/00; H04J14/02
Domestic Patent References:
| JP596637A | ||||
| JP63194449A | ||||
| JP61206334A | ||||
| JP6011132A | ||||
| JP6216845A | ||||
| JP5145494A |
Attorney, Agent or Firm:
Matsuura
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