Patent ID: 9515766
Filing Date: 2016-12-06
CPC Classification: H04B,H04J,H04Q

Claim Text:
1. A node apparatus, comprising: a first N×N wavelength selective switch, a second N×N wavelength selective switch, at least one power splitter, and at least one power combiner, wherein: the first N×N wavelength selective switch and the second N×N wavelength selective switch form a parallel-connected structure, each power splitter has one input end and two output ends, and the two output ends are a first output end and a second output end; the first output end of each power splitter is connected to a different input end of the first N×N wavelength selective switch, and the second output end of each power splitter is connected to a different input end of the second N×N wavelength selective switch; each power combiner has two input ends and one output end, and the two input ends are a first input end and a second input end; and the first input end of each power combiner is connected to one output end of the first N×N wavelength selective switch, and the second input end of each power combiner is connected to one output end of the second N×N wavelength selective switch, wherein N is a natural number greater than 1; and each power splitter sends, using the first output end, a signal comprising a working service and a backup service to the first N×N wavelength selective switch, each power splitter sends, using the second output end, the signal comprising the working service and the backup service to the second N×N wavelength selective switch, the first N×N wavelength selective switch blocks the backup service in the signal, switches the working service, and sends the working service to the power combiner using the first input end of the power combiner, and the second N×N wavelength selective switch blocks the working service in the signal, switches the backup service, and sends the backup service to the power combiner using the second input end of the power combiner.