CN115694656A

CN115694656A - Optical pulse modulation device and coherent beam Xin Ji

Info

Publication number: CN115694656A
Application number: CN202110836981.3A
Authority: CN
Inventors: 文凯; 马寅; 王川
Original assignee: Beijing Bose Quantum Technology Co ltd
Current assignee: Beijing Bose Quantum Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2023-02-03

Abstract

The invention provides an optical pulse modulation device and coherent light beam Xin Ji. The optical pulse modulation device comprises: a controller and an injector; the injector is provided with n waveguides and at least one injection module, wherein n is a natural number greater than 1; the n waveguides pass through the injection module; the controller is respectively connected with the plurality of waveguides in the injection module and is used for controlling the connected waveguides so as to modulate the intensity and/or the phase of the pulse in the waveguides, and the pulse with the preset proportion in each waveguide in the injector is respectively injected into the other n-1 waveguides. The invention can realize the mutual injection of a plurality of input pulses and modulate the intensity and/or the phase of the mutual injection of the plurality of input pulses.

Description

Optical pulse modulation device and coherent beam Xin Ji

Technical Field

The application relates to the technical field of data calculation, in particular to an optical pulse modulation device and coherent light Xin Ji based on the optical pulse modulation device.

Background

Currently, in many leading-edge technical fields, it is necessary to modulate optical pulses to achieve the corresponding technical purpose.

For example, in the field of computer technology, since the NP-complete problem is limited by computational power and cannot obtain an accurate solution in a valid time, an algorithm designed by using a coherent isooctane model has been proposed in the prior art to solve the problems of maximal segmentation and the like.

In the prior art, a commonly used coherent yixin Xin Ji mode is to inject an optical pulse into an optical fiber ring to perform cyclic resonance by using the optical fiber ring structure, and during calculation, the coherent yixin network is constructed by deriving the pulse, performing measurement feedback, and controlling injection, and completing the calculation.

In the above process, it is generally necessary to inject a plurality of light pulses into the fiber ring separately. However, the optical pulse injection method in the prior art is complicated, has low efficiency, and cannot effectively control the intensity and/or phase of mutual injection of a plurality of input pulses.

Disclosure of Invention

In view of the above, the present invention provides an optical pulse modulation apparatus, which can realize mutual injection of a plurality of input pulses and modulate the intensity and/or phase of mutual injection of the plurality of input pulses.

The technical scheme of the invention is realized as follows:

an optical pulse modulation apparatus comprising: a controller and an injector;

the injector is provided with n waveguides and at least one injection module, wherein n is a natural number more than 1;

the n waveguides pass through the injection module; the controller is respectively connected with the plurality of waveguides in the injection module and is used for controlling the connected waveguides so as to modulate the intensity and/or the phase of the pulse in the waveguides, and the pulse with a preset proportion in each waveguide in the injector is respectively injected into the other n-1 waveguides.

Preferably, n (n-1) injection modules are arranged in the injector;

the n (n-1) injection modules are sequentially connected in series, and the n waveguides sequentially penetrate through the n (n-1) injection modules; there are 2 waveguide connections in each injection module;

the controller is respectively connected with the 2 waveguides connected in each injection module and is used for controlling the 2 connected waveguides so as to modulate the intensity and/or the phase of the pulse in the waveguides, and the pulse with the preset proportion in one waveguide in the 2 connected waveguides is injected into the other waveguide in each injection module.

Preferably, when n is 2:

the injector is provided with a first waveguide, a second waveguide, a first injection module and a second injection module;

the first injection module and the second injection module are sequentially connected in series, and the first waveguide and the second waveguide sequentially penetrate through the first injection module and the second injection module;

in the first injection module, a branch of the first waveguide is connected with the second waveguide and is used for injecting pulses with preset proportion in the first waveguide into the second waveguide;

in the second injection module, a branch of the second waveguide is connected to the first waveguide for injecting a predetermined proportion of the pulses in the second waveguide into the first waveguide.

Preferably, when n is 4:

4 waveguides and 12 injection modules are arranged in the injector;

the 12 injection modules are sequentially connected in series, and the 4 waveguides sequentially penetrate through the 12 injection modules; there are 2 waveguides connected in each injection module; the controller is respectively connected with the 2 waveguides connected in each injection module and is used for controlling the 2 connected waveguides so as to modulate the intensity and/or the phase of the pulse in the waveguides, and the pulse with the preset proportion in one waveguide in the 2 connected waveguides is injected into the other waveguide in each injection module.

Preferably, 1 injection module is arranged in the injector;

the n waveguides pass through the injection module; the controller is respectively connected with the n waveguides in the injection module and is used for controlling the connected n waveguides so as to modulate the intensity and/or the phase of the pulse in the waveguides, and the pulse with the preset proportion in each waveguide is respectively injected into the other n-1 waveguides in the injection module.

Preferably, when n is 2:

the injector is provided with a first waveguide, a second waveguide and 1 injection module;

the first waveguide and the second waveguide penetrate through the injection module, the branch of the first waveguide is connected with the second waveguide, and the branch of the second waveguide is connected with the first waveguide; the controller is respectively connected with the first waveguide and the second waveguide in the injection module and is used for controlling the first waveguide and the second waveguide so as to modulate the intensity and/or the phase of the pulse in the waveguides and enable the pulse in each waveguide in a preset proportion to be injected into the other waveguide.

Preferably, when n is 4:

the injector is provided with 4 waveguides and 1 injection module;

the 4 waveguides penetrate through the injection module, and the controller is respectively connected with the 4 waveguides in the injection module and is used for controlling the connected 4 waveguides so as to modulate the intensity and/or the phase of the pulse in the waveguides, and enable the pulse in each waveguide with a preset proportion to be respectively injected into the other 3 waveguides.

Preferably, the controller modulates the intensity and/or phase of the pulses in the waveguide by changing the refractive index of the waveguide.

Preferably, the predetermined ratio is 10%.

The invention also provides coherent light beam Xin Ji based on the optical pulse modulation device, wherein the coherent light beam Xin Ji comprises: the optical pulse modulation device comprises a laser, a first coupler, a first converter, a second coupler, a second converter, a third coupler, a first delayer, a second delayer, a homodyne frequency detector and the optical pulse modulation device;

the laser is used for outputting first pulse laser with a first wavelength;

the first coupler is used for dividing the first pulse laser into two paths of pulse lasers; wherein, a path of pulse laser is output to the first converter; the other path of pulse laser is output to the homodyne frequency detector;

the first converter is used for converting the received pulse laser into second pulse laser with a second wavelength and outputting the second pulse laser to the second coupler;

the second coupler is used for outputting the received pulse laser to the second converter;

the second converter is used for converting the received pulse laser into a third pulse laser with a first wavelength and outputting the third pulse laser to the third coupler;

the third coupler is used for dividing the received third pulse laser into two paths of pulse laser; one path of pulse laser is output to the delayer through the ring resonator; the other path of pulse laser is output to the homodyne frequency detector;

the first delayer is used for correspondingly delaying the received pulse laser according to a preset delay strategy and then outputting the delayed pulse laser to each input end of the optical pulse modulation device;

the optical pulse modulation device is used for modulating the pulse laser received by each input end and outputting the modulated pulse laser to the beam combiner through each output end;

the second delayer is used for correspondingly delaying the received pulse laser according to a preset delay strategy and then respectively outputting the delayed pulse laser to the second coupler;

the homodyne frequency detector is used for carrying out balance homodyne measurement according to the received pulse laser, reading the phase information of each pulse laser and obtaining a corresponding calculation result.

Preferably, the coherent i Xin Ji further comprises: an amplifier;

the amplifier is arranged between the laser and the first coupler and used for amplifying the first pulse laser output by the laser.

Preferably, the amplifier is an erbium-doped fiber amplifier.

Preferably, the coherent i Xin Ji further comprises: an optical fiber coil;

the optical fiber coil is arranged between the second coupler and the delayer and is used for delaying the received pulse laser according to a preset delay strategy.

Preferably, the first converter and the second converter are periodically poled lithium niobate crystals.

Preferably, the controller is a field programmable gate array.

Preferably, the first wavelength is 1560 nm, and the second wavelength is 780 nm.

Preferably, the ring resonator is an optical fiber.

As can be seen from the above, in the optical pulse modulation apparatus of the present invention, the controller and the injector are provided, the plurality of waveguides and the at least one injection module are provided in the injector, the waveguides in the injection module are controlled by the controller to modulate the intensity and/or phase of the pulse in the waveguides, and the pulses with the preset proportion in each waveguide in the injector are injected into the other n-1 waveguides, respectively, so that the intensity and/or phase of each pulse can be effectively modulated, and the mutual injection between a plurality of input pulses can be realized.

Furthermore, in the coherent i Xin Ji of the present invention, the optical pulse modulation device is introduced, and the optical pulse modulation device completes the mutual injection between the plurality of pulses in the coherent i Xin Ji to construct an all-optical coherent i xin network, so that the measurement of the phase of the optical pulse is not required during the calculation process, but the controller controls (e.g., can control in a programmed manner) the intensity and phase of the mutual injection between different pulses on the optical chip, so as to implement the all-optical coherent injection and complete the calculation of the i xin network.

Therefore, the coherent light beam Xin Jiju based on the optical pulse modulation device in the invention has programmability and integratability; in addition, because the mutual injection of all light can be realized by using a programmable optical chip, measurement feedback and control injection are not needed in the whole calculation process, so that the noise introduced by measurement to an optical quantum system can be effectively eliminated, and simultaneously, the power consumption of photoelectric/electro-optical conversion generated by measurement and control can be reduced.

Drawings

Fig. 1 is a schematic structural diagram of an optical pulse modulation device according to a first embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating a process of injecting optical pulses into each other according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an optical pulse modulation device according to a second embodiment of the present invention.

Fig. 4 is a schematic diagram illustrating a process of injecting optical pulses into each other according to a second embodiment of the present invention.

Fig. 5 is a schematic diagram of a first injection module according to a second embodiment of the present invention.

Fig. 6 is a schematic diagram of a second injection module according to a second embodiment of the present invention.

Fig. 7 is a schematic diagram of a third injection module according to a second embodiment of the present invention.

Fig. 8 is a schematic structural diagram of an optical pulse modulation device according to a third embodiment of the present invention.

Fig. 9 is a schematic structural diagram of an optical pulse modulation device according to a fourth embodiment of the present invention.

FIG. 10 is a schematic diagram of a principle structure of coherent Ife Xin Ji in an embodiment of the present invention.

Detailed Description

In order to make the technical scheme and advantages of the invention more apparent, the invention is further described in detail with reference to the accompanying drawings and specific embodiments.

In an aspect of the present invention, there is provided an optical pulse modulation apparatus capable of modulating the intensity and/or phase of mutual injection of a plurality of input pulses.

For example, in one particular embodiment of the present application, the optical pulse modulation apparatus includes: a controller and an injector;

the injector is provided with n waveguides and at least one injection module, wherein n is a natural number greater than 1;

Therefore, the optical pulse modulation apparatus described above can modulate the intensity and/or phase of each pulse, and realize the mutual injection of n input pulses.

The technical solution of the present invention will be described in detail by each specific embodiment.

For example, in the specific embodiment of the present invention, one injection module or a plurality of injection modules may be disposed in the injector according to the requirements of the practical application scenario to complete the mutual injection of the n input pulses.

For example, in one embodiment of the present invention, n waveguides and n (n-1) injection modules may be disposed in the injector;

the n (n-1) injection modules are sequentially connected in series, and the n waveguides sequentially penetrate through the n (n-1) injection modules; there are 2 waveguides connected in each injection module; the controller is connected with the 2 waveguides connected in each injection module respectively, and is used for controlling the 2 connected waveguides to modulate the intensity and/or phase of the pulse in the waveguides, and enable the pulse (namely a part of the pulse) with a preset proportion in one waveguide of the 2 connected waveguides to be injected into the other waveguide in each injection module.

The first embodiment is as follows: n =2,n input pulses, n waveguides, n (n-1) injection modules.

Fig. 1 is a schematic structural diagram of an optical pulse modulation device according to a first embodiment of the present invention. Fig. 2 is a schematic diagram illustrating a process of injecting optical pulses into each other according to a first embodiment of the present invention.

As shown in fig. 1, in the present embodiment, the optical pulse modulation apparatus includes: a controller 101 and an injector 102;

the injector 102 has 2 waveguides (e.g., the first waveguide and the second waveguide shown in fig. 1) and 2 injection modules (e.g., the first injection module 103 and the second injection module 104 shown in fig. 1) disposed therein.

The 2 injection modules are sequentially connected in series, and the 2 waveguides sequentially penetrate through the 2 injection modules; 2 waveguides in each injection module are connected; the controller 101 is connected to the 2 waveguides in each injection module, and is configured to control the 2 waveguides to modulate the intensity and/or phase of the pulse in the waveguides, and to inject a predetermined proportion of pulses (i.e., a portion of pulses) in one waveguide of the 2 waveguides into the other waveguide in each injection module.

For example, as shown in fig. 1, in this particular embodiment, the first injection module 103 and the second injection module 104 are serially connected in sequence, and the first waveguide and the second waveguide pass through the first injection module 103 and the second injection module 104 in sequence. In the first injection module 103 and the second injection module 104 described above, both the first waveguide and the second waveguide are connected.

For example, in the first injection module 103, a branch, which may be a first waveguide (i.e., a branch that branches off from the first waveguide), is connected to a second waveguide, which can be used to inject a portion of the pulses in the first waveguide into the second waveguide; while in the second injection module 104, a branch, which may be a second waveguide (i.e., a branch that branches off from the second waveguide), is connected to the first waveguide, which branch may be used to inject a portion of the pulses in the second waveguide into the first waveguide.

In this particular embodiment, the injector 102 has 2 inputs (e.g., input pulse 1 and input pulse 2) and 2 outputs (e.g., output pulse 1 and output pulse 2), and thus the controller 101 described above can achieve modulation of the intensity and/or phase of the phase injection between the 2 input pulses by controlling the 2 waveguides in each injection module in the injector.

For example, after input pulse 1 and input pulse 2 enter the first injection module through the corresponding first waveguide and second waveguide, respectively, the controller may control the waveguides in the first injection module (e.g., the above control may include, but is not limited to, changing the refractive index of a certain section of the waveguide; for example, the refractive index of a branch of the first waveguide may be changed by temperature and/or voltage), and modulate the intensity and/or phase of the pulses in the waveguides, so that a portion of the pulses in the first waveguide (i.e., a portion of input pulse 1) may be injected into the pulses in the second waveguide (i.e., input pulse 2) through the branch of the first waveguide. The function of the first injection module described above can be represented by the first arrow in fig. 2 (i.e. the downward arrow).

In the second injection module, the controller may control the waveguide in the second injection module (e.g., may be to change the refractive index of the branches of the second waveguide), and modulate the intensity and/or phase of the pulses in the waveguide such that a portion of the pulses in the second waveguide may be injected into the pulses in the first waveguide. The function of the second injection module described above can be represented by the second arrow in fig. 2 (i.e., the upward arrow).

After the injection process is completed, the two pulses output by the second injection module can be used as an output pulse 1 and an output pulse 2; wherein, the output pulse 1 comprises the components of the input pulse 1 and the components of the input pulse 2; the output pulse 2 also includes both the components of the input pulse 1 and the components of the input pulse 2.

Thus, by the above-described optical pulse modulation device in this embodiment, it is possible to achieve modulation of the intensity and/or phase of the mutual injection of the 2 input pulses.

In addition, in the first embodiment, the ratio of the pulses in the branch to the pulses in the original waveguide can be preset according to the needs of practical application.

For example, in one specific embodiment of the present invention, the preset ratio may be 10% by way of example.

For example, when the preset ratio is 10%, in the first injection module shown in fig. 1, 10% of the input pulse 1 in the first waveguide will be injected into the second waveguide through the branch of the first waveguide, and 90% of the input pulse 1 in the first waveguide will continue to be output from the first injection module along the first waveguide.

Similarly, in the second injection module shown in fig. 1, 10% of the pulses in the second waveguide will be injected into the first waveguide through the branches of the second waveguide, while 90% of the input pulses in the second waveguide will continue to be output from the second injection module along the second waveguide.

In addition, in the technical scheme of the invention, pulses with preset proportion can be separated from original pulses in various modes.

For example, in one embodiment of the present invention, a beam splitter may be disposed at the junction of the waveguide and the waveguide branch, and the beam splitter may split one pulse into two pulses, and make the ratio of one pulse to the original pulse be a predetermined ratio (e.g., 10%, or other predetermined ratio).

The second embodiment is as follows: n =4,n input pulses, n waveguides, n (n-1) injection modules.

Fig. 3 is a schematic structural diagram of an optical pulse modulation device according to a second embodiment of the present invention. Fig. 4 is a schematic diagram illustrating a process of injecting optical pulses into each other according to a second embodiment of the present invention.

The specific structure of the optical pulse modulation device in the second embodiment is similar to that of the optical pulse modulation device in the first embodiment shown in fig. 1, and the difference is mainly the number of waveguides and injection modules.

As shown in fig. 3, in the present embodiment, the optical pulse modulation apparatus includes: a controller 301 and an injector 302;

the injector 302 is provided therein with 4 waveguides (e.g., a first waveguide, a second waveguide, a third waveguide, and a fourth waveguide shown in fig. 3) and 12 injection modules (e.g., a first injection module to a twelfth injection module shown in fig. 3).

The 12 injection modules are sequentially connected in series, and the 4 waveguides sequentially penetrate through the 12 injection modules; there are 2 waveguides connected in each injection module; the controller 301 is connected to the 2 waveguides connected in each injection module, and is configured to control the 2 waveguides connected to modulate the intensity and/or phase of the pulse in the waveguides, and enable a predetermined proportion of the pulse (i.e., a portion of the pulse) in one waveguide of the 2 waveguides connected to be injected into another waveguide in each injection module.

In this embodiment, the injector 302 has 4 inputs (e.g., input pulses 1-4) and 4 outputs (e.g., output pulses 1-4), so that the controller 301 can modulate the intensity and/or phase of the mutual injection between the 4 input pulses by controlling the 2 waveguides in each injection module of the injector.

For example, as shown in fig. 5, in the first injection module, a branch (i.e., a branch branching from the first waveguide) which may be the first waveguide is connected to the second waveguide, and neither the third waveguide nor the fourth waveguide is connected to the other waveguides. Wherein the branches of the first waveguide are operable to inject a portion of the pulses in the first waveguide into the second waveguide. The controller 301 is connected to the first waveguide and the second waveguide in the first injection module, respectively.

After the input pulse 1 and the input pulse 2 enter the first injection module through the corresponding first waveguide and the second waveguide, respectively, the controller may control the waveguide in the first injection module (for example, may change the refractive index of the branch of the first waveguide), and modulate the intensity and/or the phase of the pulse in the waveguide, so that a part of the pulse in the first waveguide (i.e., the input pulse 1 in the preset proportion) may be injected into the pulse in the second waveguide (i.e., the input pulse 2) through the branch of the first waveguide. The function of the first injection module described above may be represented by the first arrow from the left in fig. 4.

In the second injection module, as shown in fig. 6, the branch of the first waveguide (i.e., a branch branched from the first waveguide) may be connected to the third waveguide, and neither the second waveguide nor the fourth waveguide is connected to the other waveguides. Wherein the branch of the first waveguide is operable to inject a portion of the pulses in the first waveguide into the third waveguide.

Similarly, after the two pulses enter the second injection module through the corresponding first waveguide and the corresponding third waveguide, the controller may control the waveguides in the second injection module (for example, the refractive index of the branch of the first waveguide may be changed), and modulate the intensity and/or the phase of the pulses in the waveguides, so that a part of the pulses in the first waveguide (i.e., pulses in the first waveguide with a preset proportion) may be injected into the pulses in the third waveguide (i.e., input pulses 3) through the branch of the first waveguide. The function of the second injection module described above can be represented by the second arrow from the left in fig. 4.

In the third injection module, as shown in fig. 7, the branch of the first waveguide (i.e., one branch branched from the first waveguide) may be connected to the fourth waveguide, and neither the second waveguide nor the third waveguide may be connected to the other waveguides. Wherein the branch of the first waveguide is operable to inject a portion of the pulses in the first waveguide into the fourth waveguide.

Similarly, after the two beams of pulses enter the third injection module through the corresponding first waveguide and the fourth waveguide, respectively, the controller may control the waveguide in the third injection module (for example, may change the refractive index of the branch of the first waveguide), and modulate the intensity and/or the phase of the pulse in the waveguide, so that a part of the pulses in the first waveguide (i.e., pulses in the first waveguide in a preset proportion) may be injected into the pulses in the fourth waveguide (i.e., input pulses 4) through the branch of the first waveguide. The function of the third injection module described above can be represented by the third arrow from the left in fig. 4.

It can be seen that the first, second, and third injection modules described above can inject a portion of input pulse 1 into input pulses 2, 3, and 4, respectively.

Similarly, a part of the input pulse 2 may be injected into the input pulses 1, 3, and 4 through the fourth to sixth injection modules, respectively, in a similar injection manner as described above. The detailed implementation is not described herein.

The functions of the fourth to sixth injection modules may be represented by the fourth to sixth arrows from the left in fig. 4, respectively.

Similarly, a part of the input pulse 3 may be injected into the input pulses 1, 2, and 4 by the seventh to ninth injection modules, respectively, in a similar injection manner as described above. The detailed implementation is not described herein.

The functions of the seventh to ninth injection modules may be represented by the seventh to ninth arrows from the left in fig. 4, respectively.

Similarly, a part of the input pulse 4 may be injected into the input pulses 1, 2, and 3 through the tenth to twelfth injection modules, respectively, in a similar injection manner as described above. The detailed implementation is not described herein.

The functions of the tenth to twelfth injection modules may be respectively represented by tenth to twelfth arrows from the left in fig. 4.

After the injection process is completed, 4 pulses output by the last injection module (for example, the twelfth injection module) can be used as output pulses 1 to 4; wherein, each of the 4 output pulses includes a part of the input pulses 1 to 4.

Therefore, by the optical pulse modulation device in the present embodiment, the modulation of the intensity and/or phase of the mutual injection of the 4 input pulses can be achieved.

In the second embodiment, the ratio of the pulses in the branch to the pulses in the original waveguide may be set in advance according to the needs of the actual application. The specific implementation manner is substantially the same as that in the first embodiment, and therefore, the detailed description thereof is omitted here.

In the above-described embodiment one and embodiment two, n waveguides and n (n-1) injection modules are provided in the injector.

In addition, in the technical solution of the present invention, n waveguides and 1 injection module may be provided in the injector;

The third concrete example: n =2,n input pulses, n waveguides, 1 injection module.

As shown in fig. 8, in the present embodiment, the optical pulse modulation apparatus includes: a controller 801 and an injector 802;

the injector 802 has 2 waveguides (e.g., the first waveguide and the second waveguide shown in fig. 8) and 1 injection module (e.g., the first injection module 803 shown in fig. 8) disposed therein.

The 2 waveguides pass through the injection module, and the controller 801 is connected to the 2 waveguides in the injection module, and is configured to control the connected 2 waveguides to modulate the intensity and/or phase of the pulses in the waveguides, and inject a preset proportion of the pulses (i.e., a portion of the pulses) in each waveguide into the other waveguide.

In this embodiment, the injector 802 has 2 inputs and 2 outputs, so the controller 801 can modulate the strength and/or phase of the mutual injection between 2 input pulses by controlling 2 waveguides in the injection module of the injector.

For example, as shown in fig. 8, in the first injection module, the branch of the first waveguide (i.e., one branch taken from the first waveguide) is connected to the second waveguide, and the branch of the second waveguide (i.e., one branch taken from the second waveguide) is connected to the first waveguide. Wherein the branch of the first waveguide is operable to inject a portion of the pulses in the first waveguide into the second waveguide and the branch of the second waveguide is operable to inject a portion of the pulses in the second waveguide into the first waveguide. The controller 801 is connected to the first waveguide and the second waveguide, respectively.

After the input pulse 1 and the input pulse 2 enter the first injection module through the corresponding first waveguide and the corresponding second waveguide, respectively, the controller may control the waveguides in the first injection module (for example, may change refractive indexes of the branches of the first waveguide and/or the branches of the second waveguide), and modulate the intensity and/or phase of the pulses in the waveguides, so that a part of the pulses in the first waveguide (i.e., the input pulse 1 in the preset proportion) may be injected into the pulses in the second waveguide (i.e., the input pulse 2) through the branches of the first waveguide, and a part of the pulses in the second waveguide (i.e., the input pulse 2 in the preset proportion) may be injected into the pulses in the first waveguide (i.e., the input pulse 1) through the branches of the second waveguide.

After the injection process is completed, the two pulses output by the first injection module can be used as an output pulse 1 and an output pulse 2; wherein, the output pulse 1 includes both the input pulse 1 component and the input pulse 2 component; the output pulse 2 also contains both the components of the input pulse 1 and the components of the input pulse 2.

Therefore, by the optical pulse modulation device in the present embodiment, the modulation of the intensity and/or phase of the mutual injection of the 2 input pulses can be achieved.

In the third embodiment, the ratio of the pulses in the branch to the pulses in the original waveguide may be set in advance according to the needs of the actual application. The specific implementation manner is substantially the same as that in the first embodiment, and therefore, the detailed description thereof is omitted here.

The fourth concrete embodiment: n =4,n input pulses, n waveguides, 1 injection module.

As shown in fig. 9, in the present embodiment, the optical pulse modulation apparatus includes: a controller 901 and an injector 902;

the injector 902 has 4 waveguides (e.g., the first waveguide, the second waveguide, the third waveguide, and the fourth waveguide shown in fig. 9) and 1 injection module (e.g., the first injection module 903 shown in fig. 9) disposed therein.

The 4 waveguides penetrate through the injection module, and the controller 901 is connected to the 4 waveguides in the injection module, and is configured to control the connected 4 waveguides to modulate the intensity and/or phase of the pulse in the waveguides, and inject a preset proportion of the pulse (i.e., a portion of the pulse) in each waveguide into the other 3 waveguides.

For example, in this particular embodiment, 4 waveguides pass through the injection module. In the injection module, each waveguide has 3 branches connected to the other 3 waveguides, and the branches of each waveguide are connected to the controller 901.

In this embodiment, the injector 902 has 4 inputs (e.g., input pulses 1-4) and 4 outputs (e.g., output pulses 1-4), so that the controller 901 can modulate the intensity and/or phase of the mutual injection between the 4 input pulses by controlling the 4 waveguides in the injection module in the injector.

For example, as shown in fig. 9, in the first injection module 903, three branches of the first waveguide (i.e., three branches branching from the first waveguide) are connected with the second waveguide, the third waveguide, and the fourth waveguide, respectively, and the three branches of the first waveguide can be used to inject a portion of the pulses in the first waveguide into the second waveguide, the third waveguide, and the fourth waveguide, respectively.

Similarly, three branches of the second waveguide are respectively connected with the first waveguide, the third waveguide and the fourth waveguide, three branches of the third waveguide are respectively connected with the first waveguide, the second waveguide and the fourth waveguide, and three branches of the fourth waveguide are respectively connected with the first waveguide, the second waveguide and the third waveguide.

Therefore, after the output pulses 1 to 4 enter the first injection module through the corresponding first to fourth waveguides, respectively, the controller may control the waveguides in the first injection module (for example, the refractive index of the branches of each waveguide may be changed), and modulate the intensity and/or phase of the pulses in the waveguides, so that a part of the pulses (i.e., pulses of a preset proportion) in each waveguide may be injected into the pulses in the other three waveguides through the branches thereof, respectively.

After the injection process is completed, 4 pulses output by the first injection module can be used as output pulses 1 to 4; wherein, each of the 4 output pulses includes a part of the input pulses 1 to 4.

In the fourth embodiment, the ratio of the pulses in the branch to the pulses in the original waveguide may be set in advance according to the needs of the actual application. The specific implementation manner is substantially the same as that in the first embodiment, and therefore, the detailed description thereof is omitted here.

As is apparent from the above description, in the aspect of the present invention, the mutual injection of a plurality of input pulses is realized by using the optical pulse modulation device, and the intensity and/or phase of the mutual injection of a plurality of input pulses can be modulated.

Therefore, the optical pulse modulation apparatus of the present invention can be applied to various technical fields. For example, it can be applied to the technical field of data calculation.

In the prior art, an existing coherent yixin Xin Jimo type generally generates pulses of optical frequency by using degenerate parametric oscillation in nonlinear optics, then injects the optical pulses into an optical fiber ring to perform cyclic resonance by using an optical fiber ring structure, then realizes interaction between the optical pulses by using a mechanism of measurement feedback injection, and constructs a coherent yixin network and completes calculation by deriving the pulses, performing measurement feedback, and controlling injection during calculation, thereby completing a calculation process such as a maximum cutting problem.

However, in the above calculation process, measurement feedback and control injection are required, and the measurement operation introduces extra noise in the light quantity subsystem, and the measurement feedback and control injection also cause a power consumption problem of photoelectric/electro-optical conversion.

Therefore, in order to solve the above problems, the optical pulse modulation device of the present invention may be introduced into a coherent icoxin model to obtain a coherent icoxin model Xin Ji based on the optical pulse modulation device.

For example, according to an aspect of the present invention, there is provided coherent light beam Xin Ji based on the optical pulse modulation device.

Fig. 10 is a schematic structural diagram of a coherent beam Xin Ji based on the optical pulse modulation device in an embodiment of the present invention. As shown in fig. 10, the coherent light beam Xin Ji based on the optical pulse modulation device of the present invention includes: a laser 111, a first coupler 112, a first converter 113, a second coupler 114, a second converter 115, a third coupler 116, a first delayer 117, an optical pulse modulation device 118, a second delayer 119, and a homodyne frequency detector 120;

the laser 111 is configured to output first pulsed laser light having a first wavelength;

the first coupler 112 is configured to divide the first pulse laser into two paths of pulse lasers; wherein, one path of pulse laser is output to the first converter 113; the other path of pulse laser is output to the homodyne frequency detector 120;

the first converter 113 is configured to convert the received pulsed laser light into a second pulsed laser light with a second wavelength, and output the second pulsed laser light to the second coupler 114;

the second coupler 114, configured to output the received pulsed laser light to the second converter 115;

the second converter 115 is configured to convert the received pulsed laser into a third pulsed laser with the first wavelength, and output the third pulsed laser to the third coupler 116;

the third coupler 116 is configured to divide the received third pulse laser into two paths of pulse laser; one path of pulse laser is output to the delayer 117 through the ring resonator 122; the other path of pulse laser is output to the homodyne frequency detector 120;

the first delayer 117 is configured to perform corresponding delay on the received pulse laser according to a preset delay strategy, and output the pulse laser to each input end of the optical pulse modulation device;

the optical pulse modulation device 118 is configured to modulate the pulse laser received by each input end, and output the modulated pulse laser to the beam combiner 119 through each output end;

the optical pulse modulation device 118 may be the optical pulse modulation device described in the above embodiments, and therefore, the internal structure thereof is not described herein again;

the second delayer 119 is configured to perform corresponding delay on the received pulse laser according to a preset delay strategy, and then output the pulse laser to the second couplers 114 respectively;

the homodyne frequency detector 120 is configured to perform balanced homodyne measurement according to the received pulse laser, read phase information of each pulse laser, and obtain a corresponding calculation result.

In the coherent beam Xin Ji of the above optical pulse modulation apparatus, a first pulse laser having a first wavelength output by a laser may be divided into two pulse lasers by a first coupler, and the two pulse lasers are respectively output to a first converter and a homodyne detector (wherein, most of the pulse laser is output to the first converter, and a small part of the pulse laser is output to the homodyne detector); the first converter converts the first pulse laser into second pulse laser with a second wavelength, and the second pulse laser is input into the optical fiber loop through the second coupler; then, the third pulse laser with the first wavelength is converted again through a second converter; the third pulse laser is divided into two paths of pulse lasers through the second coupler, wherein one path of pulse laser (a small part of pulse laser) is separated from the optical fiber loop and output to the homodyne frequency detector, and the other path of pulse laser (a large part of pulse laser) is still continuously transmitted in the optical fiber loop and output to the delayer through the ring resonator.

As is apparent from the above-described configuration of the optical pulse modulation device, when the number of optical pulses to be subjected to the calculation is n, at least n input ports and n output ports may be provided in the optical pulse modulation device.

In addition, according to the yixin problem to be solved, it is necessary to control the injection of a plurality of groups of light pulses, that is, to control the intensity and phase of the mutual injection between two light pulses in each group. Therefore, the first delayer can correspondingly delay the received pulse laser and output the delayed pulse laser to each input end of the optical pulse modulation device, so that n pulse lasers received at different times can simultaneously reach n input ends of the optical pulse modulation device (the n pulse lasers are n input pulses). The optical pulse modulation device can perform mutual injection on the pulse laser received by each input end, modulate the intensity and/or phase of the mutual injection of a plurality of input pulses, and then respectively output n pulse lasers (namely n output pulses) from n output ports to the second delayer.

Subsequently, the second delayer can respectively delay the received n pulse lasers according to a preset delay strategy, so that the n pulse lasers can be sequentially output to the second coupler according to a preset time interval and a preset sending sequence to form a pulse sequence, and the pulse sequence is input into the optical fiber loop again through the second coupler, so that the next cycle resonance can be started. After the pulse laser is circulated for many times in the optical fiber loop, a stable pulse sequence can be formed.

When calculation is needed, the pulse lasers shunted from the first coupler and the third coupler can be respectively received directly through the homodyne frequency detector, balanced homodyne measurement is carried out, phase information of each pulse laser is read, and a corresponding calculation result is obtained.

In addition, as an example, in a specific embodiment of the present application, the coherent light beam Xin Ji based on the optical pulse modulation apparatus may further include: an amplifier 121;

the amplifier 121 is disposed between the laser 111 and the first coupler 112, and is configured to amplify the first pulse laser output by the laser 111.

Further, by way of example, in one embodiment of the present application, the amplifier may be an Erbium-doped fiber amplifier (EDFA), or other suitable amplifier.

In addition, as an example, in a specific embodiment of the present application, each of the first converter and the second converter may be a Periodically polarized Lithium Niobate crystal (PPLN), or other suitable converters.

In addition, as an example, in a specific embodiment of the present application, the controller may employ a Field-Programmable Gate Array (FPGA), so that the strength and phase of mutual injection between pulses in the injector can be controlled in a programmed manner.

In addition, as an example, in one specific embodiment of the present application, the first wavelength may be 1560 nanometers and the second wavelength may be 780 nanometers.

Further, by way of example, in one particular embodiment of the present application, the ring resonator 122 is an optical fiber.

In addition, as an example, in an embodiment of the present application, the coherent light beam Xin Ji based on the optical pulse modulation apparatus may further include: a fiber coil 123;

the fiber coil 123 is disposed between the second coupler 116 and the delayer 117, and is configured to delay the received pulsed laser according to a preset delay strategy.

In summary, in the technical solution of the present invention, a controller and an injector are arranged in an optical pulse modulation apparatus, a plurality of waveguides and at least one injection module are arranged in the injector, and the waveguides in the injection module are controlled by the controller to modulate the intensity and/or phase of pulses in the waveguides, so that pulses with a preset proportion in each waveguide in the injector are injected into n-1 other waveguides respectively, thereby effectively modulating the intensity and/or phase of each pulse, and realizing mutual injection between a plurality of input pulses.

In addition, in the technical solution of the present invention, the optical pulse modulation device may be introduced into coherent i Xin Ji, and the optical pulse modulation device completes mutual injection between a plurality of pulses in coherent i Xin Ji to construct an all-optical coherent i xin network, so that the controller may control (for example, may control in a programmed manner) the intensity and phase of mutual injection between different pulses on the optical chip without measuring the phase of the optical pulse during the calculation process, so as to implement the all-optical coherent injection and complete the calculation of the i xin network.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An optical pulse modulation apparatus, characterized by comprising: a controller and an injector;

2. The optical pulse modulation device according to claim 1, wherein:

n (n-1) injection modules are arranged in the injector;

the n (n-1) injection modules are sequentially connected in series, and the n waveguides sequentially penetrate through the n (n-1) injection modules; there are 2 waveguides connected in each injection module;

3. An optical pulse modulation device according to claim 2, wherein when n is 2:

4. An optical pulse modulation device according to claim 2, wherein when n is 4:

4 waveguides and 12 injection modules are arranged in the injector;

5. The optical pulse modulation device according to claim 1, wherein:

the injector is provided with 1 injection module;

the n waveguides pass through the injection module; the controller is respectively connected with the n waveguides in the injection module and is used for controlling the connected n waveguides to modulate the intensity and/or the phase of the pulse in the waveguides, and the pulse with the preset proportion in each waveguide is respectively injected into the other n-1 waveguides in the injection module.

6. An optical pulse modulation device according to claim 5, wherein when n is 2:

the first waveguide and the second waveguide penetrate through the injection module, a branch of the first waveguide is connected with the second waveguide, and a branch of the second waveguide is connected with the first waveguide; the controller is respectively connected with the first waveguide and the second waveguide in the injection module and is used for controlling the first waveguide and the second waveguide so as to modulate the intensity and/or the phase of the pulse in the waveguides and enable the pulse in each waveguide in a preset proportion to be injected into the other waveguide.

7. An optical pulse modulation device according to claim 5, wherein when n is 4:

the injector is provided with 4 waveguides and 1 injection module;

8. The optical pulse modulation apparatus according to claim 1, wherein:

the controller modulates the intensity and/or phase of the pulses in the waveguide by changing the refractive index of the waveguide.

9. The optical pulse modulation device according to claim 1, wherein:

the preset proportion is 10%.

10. A coherent i Xin Ji based on an optical pulse modulation device, wherein said coherent i Xin Ji comprises: a laser, a first coupler, a first converter, a second coupler, a second converter, a third coupler, a first delayer, a second delayer, a homodyne frequency detector and an optical pulse modulation apparatus according to any one of claims 1 to 9;

the laser is used for outputting first pulse laser with a first wavelength;

the third coupler is used for dividing the received third pulse laser into two paths of pulse lasers; one path of pulse laser is output to the delayer through the ring resonator; the other path of pulse laser is output to the homodyne frequency detector;

11. The coherent i Xin Ji of claim 10 wherein said coherent i Xin Ji further comprises: an amplifier;

12. The coherent i Xin Ji of claim 11, wherein:

the amplifier is an erbium-doped fiber amplifier.

13. The coherent i Xin Ji of claim 10 wherein said coherent i Xin Ji further comprises: an optical fiber coil;

14. The coherent i Xin Ji of claim 10, wherein:

the first converter and the second converter are periodically poled lithium niobate crystals.

15. The coherent i Xin Ji of claim 10, wherein:

the controller is a field programmable gate array.

16. The coherent i Xin Ji of claim 10, wherein:

the first wavelength is 1560 nanometers and the second wavelength is 780 nanometers.

17. The coherent i Xin Ji of claim 10, wherein:

the ring resonator is an optical fiber.