Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2008-07-29
2011-11-29
Sedighian, M. R. (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S038000, C398S033000, C398S094000
Reexamination Certificate
active
08068730
ABSTRACT:
A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.
REFERENCES:
patent: 2007/0201878 (2007-08-01), Nakashima et al.
patent: 2003-332983 (2003-11-01), None
patent: 2006-352364 (2006-12-01), None
Goto Ryosuke
Kachita Yoshito
Nakajima Ichiro
Sugaya Yasushi
Fujitsu Limited
Sedighian M. R.
Staas & Halsey , LLP
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