H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 3/52 (2006.01) G02B 6/122 (2006.01) G02B 26/00 (2006.01) H04B 10/12 (2006.01) H04Q 11/00 (2006.01) G02B 6/12 (2006.01) G02B 6/35 (2006.01)
Patent
CA 2386352
An N×N optical matrix switch using a modified cross-connection of 1×N switches is proposed in this invention where the 1×N switch unit is built with the cascaded 2×2 switching nodes. In this invention, the optical outputs at the OFF-state are separated from the output ports at the ON-state where the switching operations are required. Meanwhile, all the switching paths have to pass the same number of switching units and the same number of the activated switching units, so the high uniformity among all the optical paths can be implemented, and not only is a low power consumption required for a switching operation, but also the same power consumption is needed for all the switching operations. Especially this advantage is very apparent with optical integrated technology such as waveguides. If the wavelength sensitive switching nodes are used in this type of devices, at different operation codes of any optical path, the switching units are designed at different central wavelengths to uniformly cover the whole wavelength range so that the wavelength sensitivity of the whole device can be depressed. Therefore, the final performance of N×N optical matrix switch based on the present invention includes low insertion loss, low power consumption, high operating speed, compact device size, wavelength insensitivity and nonblocking.
Na
Sun De-Gui
LandOfFree
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