| 摘要 |
A wavelength-selective cross connect (WSC) switch is disclosed that can selectively pass a multi-wavelength incoming signal received on a given incoming port to a corresponding output port in a bar state; or cross the received signal to an opposite output port in a cross state, using only two wavelength blockers and a number of optical circulators. Power splitters divide the power of each incoming signal in half and the half-power signals are applied to the two wavelength blockers surrounded by corresponding optical circulators. Each of the wavelength blockers control either the bar state or the cross state. The outputs of the two wavelength blockers are combined to produce an output signal at each of the output ports. Thus, the wavelength-selective cross connect can selectively pass or cross an incoming signal to an appropriate output port, as desired. The disclosed wavelength-selective cross connects can be serviced without interrupting traffic. In addition, the disclosed wavelength-selective cross connect requires only shutters, i.e., the wavelength blocker, and is significantly easier to manufacture than a device requiring switches.
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