| 摘要 |
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for optical switching. An optical switch device includes a first multicast switch unit; and a second multicast switch unit, wherein each of the first and second multicast switch units respectively include: multiple optical input ports; multiple optical switches; multiple optical splitters/combiners; and multiple optical output ports. |
| 主权项 |
1. An optical device comprising:
a first optical multicast switch unit comprising a drop optical multicast switch unit, the drop optical multicast switch unit comprising:
a plurality of input optical ports,a plurality of optical splitters, each optical splitter coupled to a corresponding input optical port,a plurality of optical switches, each optical switch having L number of selectors, wherein N selectors of the L number of selectors, N being less than L, are respectively coupled to a corresponding optical splitter of the plurality of optical splitters, and wherein (L-N) selectors are reserved for expanding a number of input optical ports coupled to the plurality of optical switches, anda plurality of output optical ports, each optical output port coupled to an output of a corresponding optical switch of the plurality of optical switches; and a second optical multicast switch unit comprising an add optical multicast switch unit, the add optical multicast switch unit comprising;
a plurality of input optical ports;a plurality of optical switches, each optical switch coupled to a corresponding input optical port and each optical switch configured to selectively route an optical signal received from a corresponding input optical port to one or more optical combiners;a plurality of optical combiners, each optical combiner coupled to each optical switch of the plurality of optical switches, anda plurality of output optical ports coupled to a corresponding optical combiner. |
