Search

CN-122002161-A - Optical path switching device and method

CN122002161ACN 122002161 ACN122002161 ACN 122002161ACN-122002161-A

Abstract

The invention relates to the technical field of optical communication and discloses an optical path switching device and an optical path switching method, wherein a transmitting end array is provided with a plurality of transmitting ports along a first direction, a receiving end array is provided with a plurality of receiving ports along a second direction, a regulating unit is arranged on an optical path between the transmitting end array and the receiving end array and comprises a plurality of electro-optical regulating modules, the electro-optical regulating modules are sequentially arranged along the first direction, when a target voltage combination is applied to the electro-optical regulating modules, the refractive indexes of the electro-optical regulating modules form specific refractive index distribution based on the target voltage combination, and the specific refractive index distribution is used for adjusting the propagation angle of an optical signal from the transmitting port in the second direction to an angle matched with the target receiving port. The invention can realize the transmission of the optical signals from the same transmitting port to the target receiving port by pre-storing corresponding different target voltage combinations for different target receiving ports, thereby improving the efficiency of optical path exchange.

Inventors

  • DONG KE

Assignees

  • 无锡众星微系统技术有限公司

Dates

Publication Date
20260508
Application Date
20251226

Claims (10)

  1. 1. An optical circuit switching device, the device comprising: the transmitting terminal array is provided with a plurality of transmitting ports along a first direction; A receiver array including a plurality of receiver ports arranged along a second direction; The adjusting and controlling unit is arranged on a light path between the transmitting end array and the receiving end array and comprises a plurality of electro-optic adjusting and controlling modules, wherein the electro-optic adjusting and controlling modules are sequentially arranged along a first direction; when a target voltage combination is applied to the electro-optic regulation module, the refractive index of the electro-optic regulation module forms a specific refractive index distribution based on the target voltage combination, wherein the specific refractive index distribution is used for adjusting the propagation angle of the optical signal from the emission port in the second direction to an angle matched with a target receiving port.
  2. 2. The optical circuit switching device according to claim 1, wherein the target voltage combination includes a set of driving voltages respectively applied to the electro-optic regulation modules, each driving voltage corresponding to one electro-optic regulation module.
  3. 3. The optical circuit switching device according to claim 2, wherein different combinations of said target voltages correspond to different propagation angles of said optical signal in said second direction; The optical path switching device stores a preset mapping relation, and the preset mapping relation is used for representing the corresponding relation between the voltage combination and the receiving port.
  4. 4. The optical circuit switching device according to claim 3, wherein the electro-optical regulation module is configured with an independent electrode connected to an external driving circuit for outputting the target voltage combination based on a preset mapping relation.
  5. 5. The optical circuit switching apparatus according to claim 1, wherein a plurality of receiving ports of the receiving end array arranged in the second direction constitute a plurality of parallel receiving channels; The regulation and control unit is used for transmitting an optical signal sent by any emission port in the emission end array to any target channel in a plurality of receiving channels, and the target channel corresponds to the target receiving port.
  6. 6. The optical path switching apparatus according to claim 1, wherein the light-transmitting material is a material having an electro-optical effect, and comprises at least one of lithium niobate, silicon nitride, silicon, barium titanate, lithium tantalate, and lead zirconate titanate.
  7. 7. An optical path switching method, characterized by being applied to the optical path switching apparatus according to any one of claims 1 to 6, comprising: Determining a target voltage combination corresponding to the target receiving port based on a preset mapping relation, wherein the target voltage combination comprises driving voltage sets respectively applied to a plurality of electro-optical regulation modules; and after the optical signals from the emission ports pass through the electro-optical regulation and control modules with the specific refractive index distribution, the propagation direction of the optical signals is adjusted to an angle matched with the target receiving port so as to reach the target receiving port.
  8. 8. The method of claim 7, wherein the target voltage combination comprises a set of drive voltages respectively applied to each electro-optic conditioning module, one for each drive voltage.
  9. 9. The method according to claim 7, wherein the preset mapping relationship is used for characterizing a correspondence between a voltage combination and a receiving port, and is obtained by: applying different test voltage combinations to the electro-optic regulation module; detecting and recording a receiving port actually reached by the optical signal under each test voltage combination; and storing the mapping relation between each test voltage combination and the corresponding receiving port to form the preset mapping relation.
  10. 10. The method of claim 7, further comprising performing an aggregation process or a distribution process on optical signals received by the plurality of physical ports when the target receiving port includes the plurality of physical ports.

Description

Optical path switching device and method Technical Field The invention relates to the technical field of optical communication, in particular to an optical path switching device and an optical path switching method. Background With the rapid development of technologies such as the internet, the internet of things and artificial intelligence, global data traffic is in explosive growth, and higher demands are put forward on high-bandwidth and low-delay data exchange, and the traditional interconnection architecture based on electric exchange is difficult to meet the demands such as high throughput and low delay, so that the optical exchange technology becomes a key direction for upgrading a data center and a high-performance computing network. The implementation of the optical switching technology of the related art generally depends on technologies such as a micro-electromechanical system or a waveguide switch, and has limitations in terms of switching speed, integration scale, control accuracy and the like. Therefore, how to improve the efficiency of optical path switching is a current urgent problem to be solved. Disclosure of Invention In view of the above, the present invention provides an optical path switching device and method to improve the efficiency of optical path switching. In a first aspect, the present invention provides an optical path switching apparatus, the apparatus comprising: the transmitting terminal array is provided with a plurality of transmitting ports along a first direction; A receiver array including a plurality of receiver ports arranged along a second direction; The adjusting and controlling unit is arranged on a light path between the transmitting end array and the receiving end array and comprises a plurality of electro-optic adjusting and controlling modules, wherein the electro-optic adjusting and controlling modules are sequentially arranged along a first direction; when a target voltage combination is applied to the electro-optic regulation module, the refractive index of the electro-optic regulation module forms a specific refractive index distribution based on the target voltage combination, wherein the specific refractive index distribution is used for adjusting the propagation angle of the optical signal from the emission port in the second direction to an angle matched with a target receiving port. In an alternative embodiment, the target voltage combination includes a set of driving voltages respectively applied to the electro-optic regulation modules, each driving voltage corresponding to one electro-optic regulation module. In an alternative embodiment, different combinations of the target voltages correspond to different propagation angles of the optical signal in the second direction; The optical path switching device stores a preset mapping relation, and the preset mapping relation is used for representing the corresponding relation between the voltage combination and the receiving port. In an alternative embodiment, the electro-optical regulation module is configured with an independent electrode, and the independent electrode is connected with an external driving circuit, and the external driving circuit is used for outputting the target voltage combination based on a preset mapping relation. In an alternative embodiment, a plurality of receiving ports arranged in the second direction by the receiving end array form a plurality of parallel receiving channels; The regulation and control unit is used for transmitting an optical signal sent by any emission port in the emission end array to any target channel in a plurality of receiving channels, and the target channel corresponds to the target receiving port. In an alternative embodiment, the light-transmitting material is a material having an electro-optic effect, including at least one of lithium niobate, silicon nitride, silicon, barium titanate, lithium tantalate, and lead zirconate titanate. In a second aspect, the present invention provides an optical path switching method, applied to the optical path switching device, where the method includes: Determining a target voltage combination corresponding to the target receiving port based on a preset mapping relation, wherein the target voltage combination comprises driving voltage sets respectively applied to a plurality of electro-optical regulation modules; Applying the target voltage combination to the electro-optic regulation modules so that the refractive index of each electro-optic regulation module forms specific refractive index distribution based on the corresponding driving voltage; After the optical signal from the transmitting port passes through the electro-optical regulation module with the specific refractive index distribution, the propagation direction of the optical signal is adjusted to an angle matched with the target receiving port, so that the optical signal reaches the target receiving port. In an alternative embodiment, the target volta