Abstract: An optical switch control method and an apparatus are disclosed, to reduce impact on access performance by time overheads of optical link switching. The method includes: receiving an optical link establishment request sent by a computation node; determining whether the first optical link that needs to be established conflicts with the existing optical link; and if the first optical link that needs to be established conflicts with the existing optical link, determining whether to allow establishment of the first optical link, and establishing the first optical link if the establishment of the first optical link is allowed; or establishing the first optical link if the first optical link that needs to be established does not conflict with the existing optical link.

Abstract: A routing node includes: at least one optical buffer, a switching node, and at least one transmission waveguide, where an output end of each optical buffer is connected to an input end of the switching node; each transmission waveguide is connected to an output end of the switching node. The optical buffer is configured to parse a received optical signal to obtain an identifier of a destination routing node, and send the identifier to the switching node. The switching node determines whether an output port required by the destination routing node is in an idle state or a busy state; and control the optical buffer to store the optical signal if the output port is in a busy state; or send the optical signal to the destination routing node if the output port is in an idle state.

Abstract: A method and an apparatus for coupling an optical waveguide to a single-mode fiber are disclosed. The apparatus includes a substrate, a first optical waveguide, a single-mode fiber and a second optical waveguide. The first optical waveguide, the single-mode fiber and the second optical waveguide dispose on the substrate. One end of the single-mode fiber has an optical fiber taper structure. One end of the second optical waveguide is optically coupled to the first optical waveguide. Another end of the second optical waveguide is optically coupled to the single-mode fiber using the optical fiber taper structure of the single-mode fiber.

Abstract: An optical switch control method and an apparatus are disclosed, to reduce impact on access performance by time overheads of optical link switching. The method includes: receiving an optical link establishment request sent by a computation node; determining whether the first optical link that needs to be established conflicts with the existing optical link; and if the first optical link that needs to be established conflicts with the existing optical link, determining whether to allow establishment of the first optical link, and establishing the first optical link if the establishment of the first optical link is allowed; or establishing the first optical link if the first optical link that needs to be established does not conflict with the existing optical link.

Abstract: An optical interconnection system and method are provided. The system includes two or more basic components that are stacked and interconnected. The basic component includes an optical network layer and an electrical layer, where in each basic component, the optical network layer is electrically interconnected with the electrical layer, and the optical network layer of each basic component is optically interconnected with an optical network layer of an adjacent basic component, and through optical interconnection in three-dimensional space, a limitation on a quantity of stacked electrical layers is reduced, and efficiency of signal transmission is increased.

Abstract: An interconnection system, an apparatus, and a data transmission method. In the interconnection system, to-be-transmitted data is converted into a data packet in an optical signal form for transmission, and a control packet corresponding to the data packet is transmitted in an electrical signal form and includes routing information of the data packet. When the control packet passes through a switching node, the switching node directly determines, according to the routing information in the control packet, a neighboring node that serves as a next hop, and opens, in the switching node, an optical path used to transmit the data packet. Because no optical-to-electrical or electrical-to-optical conversion needs to be performed on the control packet and the data packet during an entire transmission procedure, problems of an extra delay and power consumption caused by electrical-optical-electrical conversion can be reduced, thereby improving data transmission efficiency.

Abstract: A routing node includes: at least one optical buffer, a switching node, and at least one transmission waveguide, where an output end of each optical buffer is connected to an input end of the switching node; each transmission waveguide is connected to an output end of the switching node. The optical buffer is configured to parse a received optical signal to obtain an identifier of a destination routing node, and send the identifier to the switching node. The switching node determines whether an output port required by the destination routing node is in an idle state or a busy state; and control the optical buffer to store the optical signal if the output port is in a busy state; or send the optical signal to the destination routing node if the output port is in an idle state.

Abstract: A polarization control device and a polarization control method, wherein the polarization control device includes a polarization beam splitting apparatus, a first phase shifter, a beam combiner, a first waveguide, a second waveguide, and a third waveguide, where the polarization beam splitting apparatus is configured to split input light into two beams of transverse electric (TE) mode light or two beams of transverse magnetic (TM) mode light, where the first phase shifter is configured to adjust a phase of light that is input to the first phase shifter, and the beam combiner is configured to adjust a split ratio of the beam combiner, and combine the two beams of TE mode light or the two beams of TM mode light that is input from a first input port and a second input port of the beam combiner, into one beam of TE mode light or one beam of TM mode light.

Abstract: A method and an apparatus for coupling an optical waveguide to a single-mode fiber are disclosed. The apparatus includes a substrate, a first optical waveguide, a single-mode fiber and a second optical waveguide. The first optical waveguide, the single-mode fiber and the second optical waveguide dispose on the substrate. One end of the single-mode fiber has an optical fiber taper structure. One end of the second optical waveguide is optically coupled to the first optical waveguide. Another end of the second optical waveguide is optically coupled to the single-mode fiber using the optical fiber taper structure of the single-mode fiber.

Abstract: An optical interconnection system and method are provided. The system includes two or more basic components that are stacked and interconnected. The basic component includes an optical network layer and an electrical layer, where in each basic component, the optical network layer is electrically interconnected with the electrical layer, and the optical network layer of each basic component is optically interconnected with an optical network layer of an adjacent basic component, and through optical interconnection in three-dimensional space, a limitation on a quantity of stacked electrical layers is reduced, and efficiency of signal transmission is increased.

Abstract: A wavelength routing device is disclosed, wherein the device includes: a primary circuit, and a secondary circuit, where the primary circuit includes N 2×2 wavelength switches, the secondary circuit includes two N×N wavelength routers, and each N×N wavelength router includes at least one 2×2 wavelength switch, where a value of N is 2n, n being a positive integer; and an input port of each 2×2 wavelength switch in the primary circuit is connected to an input stage, an output port of each 2×2 wavelength switch is connected to an input port of an N×N wavelength router of the secondary circuit, and an output port of the N×N wavelength router of the secondary circuit is connected to an output stage.

Abstract: An interconnection system, an apparatus, and a data transmission method. In the interconnection system, to-be-transmitted data is converted into a data packet in an optical signal form for transmission, and a control packet corresponding to the data packet is transmitted in an electrical signal form and includes routing information of the data packet. When the control packet passes through a switching node, the switching node directly determines, according to the routing information in the control packet, a neighboring node that serves as a next hop, and opens, in the switching node, an optical path used to transmit the data packet. Because no optical-to-electrical or electrical-to-optical conversion needs to be performed on the control packet and the data packet during an entire transmission procedure, problems of an extra delay and power consumption caused by electrical-optical-electrical conversion can be reduced, thereby improving data transmission efficiency.