Optical communications – Multiplex – Code division multiplexing
Reexamination Certificate
2008-01-29
2008-01-29
Chan, Jason (Department: 2613)
Optical communications
Multiplex
Code division multiplexing
C398S078000
Reexamination Certificate
active
07324754
ABSTRACT:
An object of the present invention is to adjust the operating wavelength of a decoder, in order to coordinate the operating characteristics of an encoder and the decoder. To this end, an optical code division multiplex transmission device of the present invention comprises a second SSFBG in the decoder, and has a mechanism to perform adjustment (phase adjustment step) of the fixation portion interval L which is the interval between a first and second fixation portions fixing in place the second SSFBG, such that the extent of the eye opening of optical pulses output from the second SSFBG is maximum. The extent of the eye opening is measured using a correlation waveform monitor, and the measurement data is sent to the wavelength control portion. A signal is sent from the wavelength control portion to the movement control portion to set the fixation portion interval L, based on data relating to the extent of the eye opening sent from the correlation waveform monitor.
REFERENCES:
patent: 2003-244101 (2003-08-01), None
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Kobayashi Shuko
Kutsuzawa Satoko
Nishiki Akihiko
Chan Jason
OKI Electric Industry Co., Ltd.
Rabin & Berdo P.C.
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