Optical communications – Multiplex
Reexamination Certificate
2006-10-10
2006-10-10
Sedighian, M. R. (Department: 2613)
Optical communications
Multiplex
C398S042000, C398S049000, C398S058000, C398S030000, C398S033000, C398S079000
Reexamination Certificate
active
07120357
ABSTRACT:
A WDM (Wavelength Divisional Multiplex) device is provided in which a client signal having a band that is greater than a band of a wavelength used for wavelength-division multiplexing is allocated a plurality of wavelengths and is transmitted as a wavelength-division multiplexed signal. The WDM device includes a used-band detecting part for detecting a used-band that is used by the client signal supplied from a client device. The used-band is detected from a path layer of the client signal using set-up information contained in the path layer of the client signal. The WDM device also includes a mapping part for mapping the detected used-band onto wavelengths used for wavelength-division multiplexing.
REFERENCES:
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patent: 6701088 (2004-03-01), Watanabe et al.
patent: 2002/0018261 (2002-02-01), Takeguchi et al.
patent: 2003/0020991 (2003-01-01), Chang
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Japanese Office Action of Application No. 2002-070515 mailed Jul. 19, 2005.
Fujitsu Limited
Sedighian M. R.
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