H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
88/97.4, 363/1.5
H04Q 11/00 (2006.01)
Patent
CA 1313319
ABSTRACT OF THE DISCLOSURE An optical switching system receives an optical input signal which is a wavelength-division multiplexed and time-division multiplexed signal. The optical input signal is divided into time-division multiplexed optical signals in different wavelength regions and transferred within an optical data bus after being subjected to a predetermined process including a frequency shift. The optical signals in the different wavelength regions are extracted from the optical data bus using optical bandpass filters, and multiplexed into an output optical signal which is a wavelength-division multiplexed and time-division multiplexed signal after being subjected to a predetermined process including a frequency shift.
605871
Fetherstonhaugh & Co.
Fujitsu Limited
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