Densely spaced two-channel wavelength division demultiplexer with an S-shaped two-coupler optical fiber ring resonator.
It is proposed that an S-shaped two-coupler single-mode optical fiber ring resonator be used as a densely spaced two-channel wavelength division demultiplexer. The dependence of the channel separation and the cross talk on the parameters of the couplers and the fiber, such as the intensity-coupling coefficients and the transmission coefficients of the couplers and the attenuation of the fiber, are studied theoretically.
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