Title:
WAVELENGTH-DIVISION MULTIPLEXING OPTICAL COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2002/030026
Kind Code:
A1
Abstract:
A WDM optical communication system in which optical signals transmitted at a plurality of bit rates of different wavelength intervals can be efficiently arranged, comprising a demultiplexing unit that basically has, for example, a demultiplexer for demultiplexing a WDM signal light into 2m signals according to the wavelength regions preset according to a minimum wavelength interval, 2m optical switches each having an input port to which the light from the demultiplexer is inputted and output ports one of which is selected and connected to the input port, and m multiplexers for multiplexing the output lights from the 2m optical switches, wherein the optical switches are so operated that the bandwidth of each optical signal approximately agrees with the wavelength arrangement interval corresponding to the bit rate.
Inventors:
TOMOFUJI HIROAKI (JP)
ONAKA HIROSHI (JP)
CHIKAMA TERUMI (JP)
ONAKA HIROSHI (JP)
CHIKAMA TERUMI (JP)
Application Number:
PCT/JP2001/008263
Publication Date:
April 11, 2002
Filing Date:
September 21, 2001
Export Citation:
Assignee:
FUJITSU LTD (JP)
TOMOFUJI HIROAKI (JP)
ONAKA HIROSHI (JP)
CHIKAMA TERUMI (JP)
TOMOFUJI HIROAKI (JP)
ONAKA HIROSHI (JP)
CHIKAMA TERUMI (JP)
International Classes:
H04B10/077; H04B10/2507; H04B10/27; G02F1/31; H04B10/29; H04B10/296; H04J14/00; H04J14/02; H04J14/08; H04Q3/52; H04Q11/00; (IPC1-7): H04J14/02; H04Q3/52; G02F1/31
Foreign References:
| JPH1127238A | 1999-01-29 | |||
| JP2000197077A | 2000-07-14 | |||
| JPH02137411A | 1990-05-25 |
Other References:
H. MIYATA ET AL., IEEE PROC. OFC, vol. 4, 2000, pages 287 - 289
E. L. GOLDSTEIN; L. Y. LIN, IEEE PROC. OPT. MEMS, 2000, pages 2728
See also references of EP 1324523A4
E. L. GOLDSTEIN; L. Y. LIN, IEEE PROC. OPT. MEMS, 2000, pages 2728
See also references of EP 1324523A4
Attorney, Agent or Firm:
Sasajima, Fujio (Toranomon 1-chome Minato-ku, Tokyo, JP)
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