Use of wavelength selective switch for a few-mode fiber
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United States of America Patent
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Jun 12, 2018
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Sep 14, 2016
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Sep 16, 2015
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Abstract
A wavelength selective switch (WSS) may include a front-end unit that includes an input few-mode fiber (FMF) providing an input optical signal including multiple wavelengths. The multiple wavelengths may each have N modes. The front-end unit may include two or more output few-mode fibers (FMFs), and a side that has a 1×N port for each of the input FMF and the two or more output FMFs. Each of the 1×N ports may be single mode in a wavelength dispersion dimension and N-mode in a switching dimension. The WSS may include a switching element to receive the input optical signal from the front-end unit, switch each of the multiple wavelengths of the input optical signal to form one or more output optical signals, and direct each of the one or more output optical signals to a corresponding 1×N port of the front-end unit.
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