CN-122002162-A - Optical path switching method, device and system

CN122002162ACN 122002162 ACN122002162 ACN 122002162ACN-122002162-A

Abstract

The disclosure relates to the technical field of optical circuit switching and provides an optical path switching method, device and system, wherein the method comprises the steps of sending target incident light, enabling the target incident light to propagate along a first coordinate axis direction of a preset three-dimensional rectangular coordinate system, enabling the preset three-dimensional rectangular coordinate system to comprise the first coordinate axis direction, a second coordinate axis direction and a third coordinate axis direction, enabling a first voltage input configuration to act on a first light-transmitting material module so as to enable a propagation path of the target incident light to deflect in the second coordinate axis direction, enabling a second voltage input configuration to act on a second light-transmitting material module connected with the first light-transmitting material module in series so as to enable the propagation path of the target incident light to deflect in the third coordinate axis direction, and receiving the target incident light passing through the first light-transmitting material module and the second light-transmitting material module. According to the technical scheme provided by one or more embodiments of the present disclosure, link switching time can be reduced, and optical path data transmission efficiency can be improved.

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 (16)

1. An optical circuit switching method, the method comprising: Transmitting target incident light, wherein the target incident light propagates along a first coordinate axis direction of a preset three-dimensional rectangular coordinate system, and the preset three-dimensional rectangular coordinate system comprises the first coordinate axis direction, a second coordinate axis direction and a third coordinate axis direction; Configuring a first voltage input to act on a first light transmissive material module to deflect a propagation path of the target incident light in the second coordinate axis direction; configuring a second voltage input to act on a second light transmissive material module in series with the first light transmissive material module to deflect the propagation path of the target incident light in the third coordinate axis direction; receiving the target incident light passing through the first and second light transmissive material modules; And the optical path link switching in the nanosecond or picosecond order is realized by changing the first voltage input configuration and the second voltage input configuration.
2. The method according to claim 1, wherein the first and/or second light transmissive material modules are constituted by light transmissive material layers having an electro-optical effect, the first and/or second voltage input configuration being a combination of voltage conditions applied to different light transmissive material layers or to different areas of the same light transmissive material layer.
3. The method according to claim 2, wherein the light-transmitting material layer is composed of an optical material having an electro-optical effect.
4. The method according to claim 1 or 2, wherein the first voltage input configuration comprises a differential voltage applied across a pair of electrodes of the first light transmissive material module arranged along the third coordinate axis direction, and the second voltage input configuration comprises a differential voltage applied across a pair of electrodes of the second light transmissive material module arranged along the second coordinate axis direction.
5. The method according to claim 1, wherein the method further comprises: And according to the position of the target emergent light path, inquiring a pre-stored voltage configuration mapping table, and determining the corresponding first voltage input configuration and second voltage input configuration.
6. The method according to claim 2, wherein the first and/or second light transmissive material module is composed of at least two light transmissive material layers having an electro-optical effect, the at least two light transmissive material layers constituting the light transmissive material module in a stacked manner, the method further comprising: and different voltages are respectively applied to each light-transmitting material layer, so that the enhancement or compensation control of the beam deflection is realized.
7. The method of claim 1, wherein prior to the transmitting the target incident light, the method further comprises at least one of: Filtering stray spectrum components deviating from a working wave band in the target incident light by using a fixed light filter; the power amplifier is utilized to increase the signal power of the target incident light; calibrating the polarization state of the target incident light by using a first polarization controller; And correcting the signal waveform of the target incident light by using a first dispersion compensator.
8. The method of claim 1 or 7, wherein after the receiving the target incident light through the first and second modules of light transmissive material, the method further comprises at least one of: selecting and extracting an optical channel of a target operating wavelength from the received target incident light by using an adjustable optical filter; Adjusting the signal power of the target incident light to an optimal working range of a receiver by using a pre-amplifier; tracking and compensating the random change of the polarization state caused by the transmission link in real time by using a second polarization controller; and reversely compensating accumulated dispersion damage in the transmission process by using a second dispersion compensator.
9. An optical circuit switching device, the device comprising: The optical transmission unit is used for transmitting target incident light, the target incident light propagates along a first coordinate axis direction of a preset three-dimensional rectangular coordinate system, and the preset three-dimensional rectangular coordinate system comprises the first coordinate axis direction, a second coordinate axis direction and a third coordinate axis direction; A first control unit for configuring a first voltage input to act on a first light transmissive material module to deflect a propagation path of the target incident light in the second coordinate axis direction; A second control unit for configuring a second voltage input to act on a second light-transmitting material module connected in series with the first light-transmitting material module so as to deflect a propagation path of the target incident light in the third coordinate axis direction; a light receiving unit for receiving the target incident light passing through the first light transmitting material module and the second light transmitting material module; And the optical path link switching in the nanosecond or picosecond order is realized by changing the first voltage input configuration and the second voltage input configuration.
10. The device according to claim 9, wherein the first and/or second light transmissive material modules are constituted by light transmissive material layers having an electro-optical effect, the first and/or second voltage input configuration being a combination of voltage conditions applied to different light transmissive material layers or to different areas of the same light transmissive material layer.
11. The apparatus according to claim 9 or 10, wherein the first voltage input configuration comprises a differential voltage applied across a pair of electrodes of the first light transmissive material module arranged along the third coordinate axis direction, and the second voltage input configuration comprises a differential voltage applied across a pair of electrodes of the second light transmissive material module arranged along the second coordinate axis direction.
12. The apparatus of claim 9, wherein the apparatus further comprises: and the inquiring and positioning unit is used for inquiring a pre-stored voltage configuration mapping table according to the position of the target emergent light path and determining the corresponding first voltage input configuration and second voltage input configuration.
13. The device according to claim 10, characterized in that the first and/or the second light-transmitting material module is composed of at least two light-transmitting material layers with an electro-optical effect, which constitute the light-transmitting material module in a stacked manner, the first and the second control unit being further adapted to: and different voltages are respectively applied to each light-transmitting material layer, so that the enhancement or compensation control of the beam deflection is realized.
14. An optical path switching system is characterized by comprising an optical transmitting subsystem, an optical modulation and control subsystem and an optical receiving subsystem, wherein, The optical transmitting subsystem is used for transmitting target incident light to the optical modulation subsystem, the target incident light propagates along a first coordinate axis direction of a preset three-dimensional rectangular coordinate system, and the preset three-dimensional rectangular coordinate system comprises the first coordinate axis direction, a second coordinate axis direction and a third coordinate axis direction; The light modulation subsystem is used for configuring a first voltage input and acting on the first light-transmitting material module so as to deflect the propagation path of the target incident light in the direction of the second coordinate axis; The light modulation and control subsystem is further used for configuring a second voltage input to act on a second light-transmitting material module connected in series with the first light-transmitting material module so as to deflect the propagation path of the target incident light in the direction of the third coordinate axis; the light receiving subsystem is used for receiving the target incident light passing through the first light-transmitting material module and the second light-transmitting material module; by changing the first voltage input configuration and/or the second voltage input configuration, the optical modulation subsystem achieves optical path link switching on the order of nanoseconds or picoseconds.
15. The system of claim 14, wherein the light modulation subsystem is further configured to: And according to the position of the target emergent light path, inquiring a pre-stored voltage configuration mapping table, and determining the corresponding first voltage input configuration and second voltage input configuration.
16. The system according to claim 14 or 15, wherein the first and/or second light transmissive material module is composed of at least two light transmissive material layers having an electro-optical effect, the at least two light transmissive material layers constituting the light transmissive material module in a stacked manner, the light modulation subsystem further being adapted to: and different voltages are respectively applied to each light-transmitting material layer, so that the enhancement or compensation control of the beam deflection is realized.

Description

Optical path switching method, device and system Technical Field The disclosure relates to the technical field of optical circuit switching, and in particular relates to an optical path switching method, device and system. Background With the rapid development of the technologies such as the Internet, the Internet of things and artificial intelligence, the global data traffic shows explosive growth. For example, artificial intelligence training clusters have extremely high bandwidth requirements and various cloud service providers need to process massive amounts of data. Conventional electrical switching technology has difficulty in meeting the high bandwidth, low latency market demands, which has prompted the development of optical circuit switching (OCS, optical Circuit Switching) technology. The OCS technology has the remarkable advantages of ultra-low delay, ultra-low energy consumption, ultra-high bandwidth and the like through all-optical signal transmission and physical path dynamic reconstruction without a photoelectric conversion link. Currently, data centers are evolving from traditional architectures to more efficient, energy efficient. The OCS technology can realize high-efficiency interconnection inside the data center and among the data centers, can improve the network throughput and flexibility of the data center, and can remarkably reduce the power consumption of the data center. Thus, OCS technology is an important choice for architecture upgrades in data centers. The existing relatively mature OCS technology mainly comprises an OCS technology based on a micro-electromechanical system, an OCS technology based on digital liquid crystal, an OCS technology based on piezoelectric ceramics and an OCS technology based on silicon light. However, the link switching time of these OCS technologies is usually in the millisecond level or microsecond level, and compared with the link switching time of the nanosecond level in the conventional electrical switching technology, the existing OCS technologies have the disadvantage of excessively long link switching time. Disclosure of Invention In view of this, one or more embodiments of the present disclosure provide a method, an apparatus, and a system for optical path switching, which can reduce link switching time and improve optical path data transmission efficiency. In a first aspect, the disclosure provides an optical path switching method, which includes sending a target incident light, the target incident light propagating along a first coordinate axis direction of a preset three-dimensional rectangular coordinate system, the preset three-dimensional rectangular coordinate system including the first coordinate axis direction, a second coordinate axis direction and a third coordinate axis direction, applying a first voltage input configuration to a first light-transmitting material module so as to deflect a propagation path of the target incident light in the second coordinate axis direction, applying a second voltage input configuration to a second light-transmitting material module connected in series with the first light-transmitting material module so as to deflect the propagation path of the target incident light in the third coordinate axis direction, and receiving the target incident light passing through the first light-transmitting material module and the second light-transmitting material module, wherein nanosecond or picosecond optical path link switching is achieved by changing the first voltage input configuration and the second voltage input configuration. In the process that the target incident light propagates from the transmitting end to the receiving end along the direction of the first coordinate axis, the propagation direction of the target incident light in the second coordinate axis and the third coordinate axis can be effectively controlled by accurately controlling the configuration parameters of two groups of input voltages respectively applied to the two groups of light-transmitting material modules, so that the target incident light is accurately guided to a preset emergent light path position, and a data routing function based on light path regulation and control is realized. And the dynamic switching of the optical path channel can be efficiently completed by only changing the voltage input configuration, so that the expected optical switching operation is realized. The scheme does not involve physical displacement action and the like, so that the link switching time can be reduced to nanosecond or picosecond level. In an alternative embodiment, the first and/or second light transmissive material modules are constituted by light transmissive material layers having an electro-optical effect, and the first and/or second voltage input arrangements are arranged as combinations of voltage conditions applied to different light transmissive material layers or to different areas of the same light transmissive material layer. The l