CN114967838A - Wide-space ultra-low jitter synchronous signal generation system and method - Google Patents
Wide-space ultra-low jitter synchronous signal generation system and method Download PDFInfo
- Publication number
- CN114967838A CN114967838A CN202210560644.0A CN202210560644A CN114967838A CN 114967838 A CN114967838 A CN 114967838A CN 202210560644 A CN202210560644 A CN 202210560644A CN 114967838 A CN114967838 A CN 114967838A
- Authority
- CN
- China
- Prior art keywords
- signal
- optical
- clock
- module
- delay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/12—Synchronisation of different clock signals provided by a plurality of clock generators
Abstract
The invention provides a system and a method for generating a wide-space ultra-low jitter synchronous signal, which comprises a synchronous time sequence generating assembly, at least one synchronous signal generator and a computer control module, wherein the synchronous signal generator is respectively connected with the computer control module and the synchronous time sequence generating assembly, and the synchronous time sequence generating assembly generates an optical clock signal and a data stream signal with frequency information. The computer control module sets the frequency and the time delay of the synchronous trigger signal, the synchronous signal generator recovers frequency information from the data stream, compares the frequency information with the frequency information set by the computer control module and successfully outputs an output frequency signal, one path of optical clock signal selects a pulse signal under the action of the frequency signal and carries out photoelectric conversion after time delay to output an ultra-low jitter synchronous trigger signal, and the other path of optical clock signal directly carries out photoelectric conversion to obtain a synchronous clock signal. The generation and output of the ultra-low jitter synchronous trigger signal and the synchronous clock signal which are distributed in a wide space are realized.
Description
Technical Field
The invention relates to the technical field of synchronous control signals, in particular to a system and a method for generating a wide-space ultra-low jitter synchronous signal.
Background
At present, a synchronous signal generating system usually adopts a single signal generator to generate or a plurality of signal generators are cascaded, synchronous signals are usually electric signals, wide-space transmission cannot be realized, and in addition, the generated synchronous signals can reach the highest precision of hundreds of picoseconds and cannot meet the occasions with ultra-low jitter requirements.
Disclosure of Invention
In order to solve the above problems, the present invention provides a system and a method for generating a wide-space ultra-low jitter synchronization signal, which mainly comprises a synchronization timing generation assembly, a synchronization signal generator and a computer control module. The synchronous timing generation module generates an optical clock signal and a data stream signal with frequency information. The computer control module sets the frequency and the time delay of the synchronous trigger signal. The synchronous signal generator recovers frequency information from the data stream, compares the frequency information with the frequency information set by the computer control module, and successfully compares the frequency information with the frequency information set by the computer control module to obtain an output frequency signal. The clock signal low-jitter transmission, frequency pulse selection technology and high-bandwidth photoelectric-to-optical conversion technology are adopted to generate an ultra-low-jitter synchronous trigger signal distributed in a wide space, and when the ultra-low-jitter synchronous trigger signal needs to be synchronized with an external system, the ultra-low-jitter synchronous clock signal can be output.
The invention provides a wide-space ultra-low jitter synchronous signal generation system, which adopts the following specific technical scheme:
the system comprises a synchronous time sequence generating assembly, a synchronous signal generator and a computer control module; the synchronous time sequence generating assembly and the computer control module are respectively connected with at least one synchronous signal generator;
the synchronous time sequence generating assembly is used for outputting a plurality of paths of optical clock signals and mixing and coding the optical clock signals and a plurality of frequency information to form a data stream signal output;
the computer control module controls the synchronous signal generator through signals and sets the frequency and the time delay of a synchronous trigger signal;
the synchronous signal generator selects an optical pulse signal according to the received optical clock signal and the frequency signal, delays time according to the delay signal, and performs photoelectric conversion after the time delay to output a synchronous trigger signal with set frequency and time delay.
Furthermore, the synchronous timing sequence assembly comprises an optical clock source, a clock optical fan-out module, a high-speed photoelectric conversion module, a clock and frequency signal coding module and a data stream optical fan-out module;
the optical clock source is connected with the clock optical fan output module, the clock optical fan output module is respectively connected with the synchronous signal generator and the high-speed photoelectric conversion module, the high-speed photoelectric conversion module is connected with the clock and frequency signal coding module, and the clock and frequency signal coding module is connected with the data stream optical fan-out module;
the optical clock source generates an optical clock signal and outputs the optical clock signal in a multi-path way through the clock optical fan output module, the high-speed photoelectric conversion module converts the received optical clock signal into an electric clock signal and outputs the electric clock signal to the clock and frequency signal coding module, the clock and frequency signal coding module mixes and codes various frequency information and the electric clock signal to form a data stream signal, and the data stream signal is output to the synchronous signal generator in the form of an optical data stream through the data stream optical fan-out module.
Furthermore, the synchronous signal generator comprises a local clock light fan-out module, a synchronous trigger signal output unit, a clock and frequency signal recovery module, a channel delay and frequency setting module, an adjustable delay frequency signal generation module, a delay data generation module and a second high-speed photoelectric detector;
the local clock optical fan-out module is connected with the clock optical fan output module and used for receiving optical clock signals, and the local clock optical fan output module is respectively connected with at least one synchronous trigger output unit and at least one second high-speed photoelectric detector;
the clock and frequency signal recovery module is connected with the synchronous time sequence generation assembly, receives the optical data stream signal output by the data stream optical fan-out module, and outputs recovered clock and recovered frequency information, the adjustable delay frequency signal generation module and the delay data generation module are connected with the synchronous trigger signal output unit, and the channel delay and frequency setting module is in signal connection with the computer control module and is connected with the adjustable delay frequency signal generation module and the delay data generation module.
Furthermore, the synchronous trigger signal output unit comprises a pulse selector and a first high-speed photoelectric detector, the pulse selector is connected with the first high-speed photoelectric detector through an optical fiber delay line, the pulse selector is connected with the local clock light fan-out module and the adjustable delay frequency signal generation module, and the delay data generation module is in signal connection with the optical fiber delay line;
the pulse selector receives one path of optical clock signal output of the local clock optical fan-out module and the frequency signal output by the adjustable delay frequency signal generating module, the optical pulse signal is selected to be output, the optical pulse signal is delayed by the optical fiber delay line and then is connected with the first high-speed photoelectric detector, and the first high-speed photoelectric detector outputs a synchronous trigger signal through high-speed photoelectric conversion.
Furthermore, the plurality of synchronous signal generators are respectively used for receiving the clock optical signal and the optical data stream signal output by the synchronous time sequence generating assembly and the network control signal output by the computer control module.
The invention also discloses a method for generating the wide-space ultra-low jitter synchronous signal based on the wide-space ultra-low jitter synchronous signal generation system, which has the following specific technical scheme:
s1: generating an optical clock signal by taking an optical clock source as a reference clock, and performing multi-path fan-out on the optical clock signal by a clock optical fan-out module to transmit the optical clock signal to a synchronous signal generator;
s2: the synchronous signal generator receives the optical clock signals output by the clock optical fan-out module, multi-path fan-out is carried out again through the local clock optical fan-out module, and at least one path of optical clock signals generate and output synchronous clock signals through the second high-speed photoelectric detector;
s3: setting frequency and channel delay through a computer control module to obtain frequency information and delay information, and recovering according to an optical data stream signal received from a synchronous time sequence generating assembly to obtain a clock signal and a frequency information code through restoration;
generating a delay signal according to the delay information, and generating a frequency signal with delay according to the frequency information code, the frequency information and the delay information;
s4: and selecting an optical pulse signal from the optical clock signals through the frequency signal with time delay, carrying out time delay according to the time delay signal, and then outputting a synchronous trigger signal through the first high-speed photoelectric detector.
Further, in step S3, the process of obtaining the output of the optical data stream signal to the synchronization signal generator is as follows:
an optical clock signal output by the optical clock source is converted to an electric clock signal by a high-speed photoelectric conversion module through one path output by a clock optical fan-out module, and the electric clock signal and a multi-frequency signal are mixed and encoded and then are fanned out to the synchronous signal generator through data stream light.
Further, in step S3, the delay information includes first delay information and second delay information, where the delay of the first delay information is greater than the delay of the second delay information, and the second delay information generates a delay signal through the delay data generating module.
Further, in step S3, the specific process of generating the frequency signal with the time delay is as follows:
and comparing the frequency information with the frequency information code obtained by reduction, and outputting a frequency signal with first delay information after the comparison is successful.
Further, in step S4, the specific process of generating and outputting the synchronization trigger signal is as follows:
and selecting an optical pulse signal from the optical clock signals output by the local clock signal optical fan-out module through the pulse selector according to the frequency signal with the first delay information, and transmitting the optical pulse signal to the optical fiber delay line, wherein the optical fiber delay line delays the optical pulse signal according to the second delay information, and the delayed optical pulse signal is converted by the high-speed photoelectric conversion module to obtain a synchronous trigger signal with set frequency and delay.
The invention has the following beneficial effects:
1. in the synchronous time sequence generating assembly, one path of optical clock signal is subjected to photoelectric conversion through multi-path fan-out based on the same optical clock source, hybrid coding and decoding are adopted, and the selection of the set frequency of the synchronous trigger signal is realized through a computer control module; the adjustable delay function of the synchronous trigger signal is realized by adopting a mode of realizing large delay by a frequency signal and realizing small delay by delay data; the clock signal low-jitter transmission, frequency pulse selection technology and high-speed photoelectric and electro-optical conversion technology are adopted to generate ultra-low-jitter synchronous trigger signals with wide spatial distribution; the optical fan-out, pulse selection, optical fiber delay line and high-speed photoelectric conversion technology of the clock signal ensure the low-jitter characteristic of the synchronous trigger signal.
2. Setting the frequency and the time delay of a required synchronous trigger signal through a computer control module, carrying out mixed coding on an optical clock signal output by an optical clock source and various frequency information after photoelectric conversion to form a data stream signal, sending the data stream signal to a synchronous signal generator, restoring the frequency information and the clock information by the synchronous signal generator according to the data stream signal, comparing the frequency information with the frequency information restored in the data stream according to the set frequency and the time delay, outputting a pulse signal with the set frequency after the comparison is successful and the time delay of large time delay information is carried out, wherein the pulse signal is the frequency signal of the synchronous trigger signal; the small delay information is sent to a delay data generation module to realize the small delay of the synchronous trigger signal, the synchronous trigger signal has certain frequency and delay characteristics, namely, a clock signal is required to be selected according to specific frequency and delay, and the generation of the frequency signal of the delay-adjustable synchronous trigger signal is ensured through the mixed coding and decoding and delay decomposition of the clock and the frequency information.
3. In order to meet the requirement of synchronization with an external system, synchronous clock signals need to be provided, in a synchronous signal generator, received optical clock signals output by the same optical clock source in a synchronous timing generation assembly are subjected to multi-path fan-out again, one path of output optical clock signals are directly subjected to high-speed photoelectric conversion to obtain low-jitter synchronous clock signals, the other path of output optical clock signals are subjected to selective delay to output synchronous trigger signals, the synchronous clock signals and the synchronous trigger signals are both from the same clock source, and the synchronism and the low jitter performance between the synchronous clock signals and the synchronous trigger signals are ensured.
Drawings
FIG. 1 is a schematic block diagram of the system of the present invention;
FIG. 2 is a schematic flow diagram of the process of the present invention.
Description of reference numerals: the system comprises a 1-optical clock source, a 2-clock light fan-out module, a 3-high-speed photoelectric conversion module, a 4-clock and frequency signal coding module, a 5-data stream light fan-out module, a 6-local clock light fan-out module, a 7-pulse selector, an 8-optical fiber delay line, a 9-first high-speed photoelectric detector, a 10-second high-speed photoelectric detector, a 11-computer control module, a 12-clock and frequency signal recovery module, a 13-channel delay and frequency setting module, a 14-adjustable delay frequency signal generation module and a 15-delay data generation module.
Detailed Description
In the following description, technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Embodiment 1 of the present invention discloses a wide-space ultra-low jitter synchronization signal generation system, including: a synchronous timing sequence generation component, a synchronous signal generator and a computer control module 11; the synchronous time sequence generating assembly and the computer control module 11 are respectively connected with at least one synchronous signal generator;
the synchronous time sequence generating assembly is used for outputting a plurality of paths of optical clock signals and mixing and coding the optical clock signals and a plurality of frequency information to form a data stream signal output;
the computer control module 11 controls the synchronous signal generator through signals, and sets the frequency and the time delay of a synchronous trigger signal;
the synchronous signal generator selects an optical pulse signal according to the received optical clock signal and the frequency signal, delays time according to the delay signal, and performs photoelectric conversion after delay to output a synchronous trigger signal with set frequency and delay time.
The plurality of synchronous signal generators are respectively used for receiving the clock optical signal and the optical data stream signal output by the synchronous time sequence generating assembly and the network control signal output by the computer control module 11.
Specifically, as shown in fig. 1, the synchronous timing component includes an optical clock source 1, a clock optical fan-out module 2, a high-speed photoelectric conversion module 3, a clock and frequency signal encoding module 4, and a data stream optical fan-out module 5;
the optical clock source 1 is connected with the clock optical fan output module 2, the clock optical fan output module 2 is respectively connected with the synchronous signal generator and the high-speed photoelectric conversion module 3, the high-speed photoelectric conversion module 3 is connected with the clock and frequency signal coding module 4, and the clock and frequency signal coding module 4 is connected with the data stream optical fan-out module 5;
the optical clock source 1 generates an optical clock signal and outputs the optical clock signal in a multi-path way through the clock optical fan output module 2, the high-speed photoelectric conversion module 3 converts the received optical clock signal into an electric clock signal and outputs the electric clock signal to the clock and frequency signal coding module 4, the clock and frequency signal coding module 4 mixes and codes various frequency information and the electric clock signal to form a data stream signal, and the data stream signal is output to the synchronous signal generator in the form of an optical data stream through the data stream optical fan-out module 5;
the synchronous clock signal is output through high-speed photoelectric conversion, and the output synchronous clock signal can provide a reference clock for an external system, so that the synchronization of a synchronous signal generation system and the external system is realized.
The synchronous signal generator comprises a local clock light fan-out module 6, a synchronous trigger signal output unit, a clock and frequency signal recovery module 12, a channel delay and frequency setting module 13, an adjustable delay frequency signal generation module 14, a delay data generation module 15 and a second high-speed photoelectric detector 10;
the local clock optical fan-out module 6 is connected with the clock optical fan output module 2 and receives an optical clock signal, and the local clock optical fan output module 6 is respectively connected with at least one synchronous trigger output unit and at least one second high-speed photoelectric detector 10;
the clock and frequency signal recovery module 12 is connected to the synchronous timing generation component, receives the optical data stream signal output by the data stream optical fan-out module 5, and outputs recovered clock and recovered frequency information, and the adjustable delay frequency signal generation module 14 and the delay data generation module 15 are connected to the synchronous trigger signal output unit;
the computer control module 11 and the channel delay and frequency setting module 13 are in signal connection, and the channel delay and frequency setting module 13 is connected with the adjustable delay frequency signal generating module 14 and the delay data generating module 15;
the frequency signal is used for selecting optical clock signal pulse selection;
the adjustable delay frequency signal generation module 14 receives frequency information, large delay information, recovered data and recovered clock, and outputs a frequency signal with large delay;
the frequency signal is synchronous with the recovery clock, and the recovery clock is synchronous with the clock source, so that the frequency signal is synchronous with the optical clock pulse signal, and the generated synchronous signal is stable in time sequence;
the delay of the synchronous trigger signal can be realized by an adjustable delay frequency signal generating module 14 and a delay data generating module 15, wherein the adjustable delay frequency signal generating module 14 realizes the large delay of integral multiple of the period of the optical clock source 1 by selecting pulses at different moments, and the delay data generation realizes the small delay in the period of the optical clock source 1.
The small delay information output by the channel delay and frequency setting module 13 is connected with the delay data generating module 15, and then a small delay signal is output;
the synchronous trigger signal output unit comprises a pulse selector 7 and a first high-speed photoelectric detector 9, the pulse selector 7 is connected with the first high-speed photoelectric detector 9 through an optical fiber delay line 8, the pulse selector 7 is connected with the local clock light fan-out module 6 and the adjustable delay frequency signal generation module 14, and the delay data generation module 15 is in signal connection with the optical fiber delay line 8;
the pulse selector 7 receives a path of optical clock signal output of the local clock optical fan-out module 6 and a frequency signal output by the adjustable delay frequency signal generation module 14, selects to output an optical pulse signal, and the first high-speed photodetector 9 outputs a synchronous trigger signal according to the received optical pulse signal and the delay signal.
The system adopts optical clock signals for long-distance transmission, then selects and outputs synchronous trigger signals from the clock signals through pulse selection, and the output synchronous trigger signals have the characteristic of ultra-low jitter because the synchronous trigger signals are selected from the clock signals.
Example 2
Embodiment 2 of the present invention discloses a method for generating a wide-space ultra-low jitter synchronization signal based on embodiment 1, as shown in fig. 2, the specific steps and flows are as follows:
s1: generating an optical clock signal by using an optical clock source 1 as a reference clock, and performing multi-path fan-out on the optical clock signal by using a clock optical fan-out module 2 to transmit the optical clock signal to a synchronous signal generator;
s2: the synchronous signal generator receives the optical clock signal output by the clock optical fan-out module 2, multi-path fan-out is performed again through the local clock optical fan-out module 6, and at least one path of optical clock signal generates a synchronous clock signal through the second high-speed photoelectric detector 10 and is output.
S3: setting frequency and channel delay through the computer control module 11 to obtain frequency information and delay information, and simultaneously recovering according to an optical data stream signal received from the synchronous time sequence generating assembly to restore and obtain a clock signal and a frequency information code;
and generating a delay signal according to the delay information, and generating a frequency signal with delay according to the frequency information code, the frequency information and the delay information.
The process of obtaining the output of the optical data stream signal to the synchronization signal generator is as follows:
an optical clock signal output by the optical clock source 1 is converted to an electric clock signal by outputting one path to the high-speed photoelectric conversion module 3 through the clock optical fan-out module 2, and the electric clock signal and the multi-frequency signal are mixed and encoded and then are fanned out to the synchronous signal generator through data stream optical fan-out; the data stream signal and the clock signal are transmitted in an optical form, so that the low-jitter transmission of the clock signal in a wide space range is ensured; namely, the synchronous timing generation component generates two optical signals: the clock mixes the encoded optical data stream signal with the frequency signal and the optical clock signal.
The delay information includes first delay information and second delay information, the delay of the first delay information is greater than the delay of the second delay information, and the second delay information generates a delay signal through the delay data generating module 15.
The specific process of generating the frequency signal with the time delay is as follows:
and comparing the frequency information with the frequency information code obtained by reduction, and outputting a frequency signal with first delay information after the comparison is successful.
S4: an optical pulse signal is selected from the optical clock signal by a frequency signal with time delay, time delay is carried out according to the time delay signal, and then a synchronous trigger signal is output by the first high-speed photoelectric detector 9.
The specific process of generating and outputting the synchronous trigger signal is as follows:
and selecting an optical pulse signal from the optical clock signals output by the local clock signal optical fan-out module through the pulse selector 7 according to the frequency signal with the first delay information, and sending the optical pulse signal to the optical fiber delay line 8, delaying the optical pulse signal by the optical fiber delay line 8 according to the second delay information, and converting the delayed optical pulse signal by the high-speed photoelectric conversion module 3 to obtain a synchronous trigger signal with a set frequency and a delayed time.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. A wide-space ultra-low jitter synchronous signal generation system is characterized by comprising a synchronous time sequence generation assembly, a synchronous signal generator and a computer control module; the synchronous time sequence generating assembly and the computer control module are respectively connected with at least one synchronous signal generator;
the synchronous time sequence generating assembly is used for outputting a plurality of paths of optical clock signals and mixing and coding the optical clock signals and a plurality of frequency information to form a data stream signal output;
the computer control module controls the synchronous signal generator through signals, and sets the frequency and the time delay of a synchronous trigger signal;
the synchronous signal generator selects an optical pulse signal according to the received optical clock signal and the frequency signal, delays time according to the delay signal, and performs photoelectric conversion after delay to output a synchronous trigger signal with set frequency and delay time.
2. The wide-space ultra-low jitter synchronization signal generation system of claim 1, wherein the synchronization timing component comprises an optical clock source, a clock optical fan-out module, a high-speed optical-to-electrical conversion module, a clock and frequency signal encoding module, and a data stream optical fan-out module;
the optical clock source is connected with the clock optical fan output module, the clock optical fan output module is respectively connected with the synchronous signal generator and the high-speed photoelectric conversion module, the high-speed photoelectric conversion module is connected with the clock and frequency signal coding module, and the clock and frequency signal coding module is connected with the data stream optical fan-out module;
the optical clock source generates an optical clock signal and outputs the optical clock signal in a multi-path way through the clock optical fan output module, the high-speed photoelectric conversion module converts the received optical clock signal into an electric clock signal and outputs the electric clock signal to the clock and frequency signal coding module, the clock and frequency signal coding module mixes and codes various frequency information and the electric clock signal to form a data stream signal, and the data stream signal is output to the synchronous signal generator in the form of an optical data stream through the data stream optical fan-out module.
3. The wide-space ultra-low jitter synchronous signal generating system of claim 1, wherein the synchronous signal generator comprises a local clock optical fan-out module, a synchronous trigger signal output unit, a clock and frequency signal recovery module, a channel delay and frequency setting module, an adjustable delay frequency signal generating module, a delay data generating module and a second high-speed photodetector;
the local clock optical fan-out module is connected with the clock optical fan output module and used for receiving optical clock signals, and the local clock optical fan output module is respectively connected with at least one synchronous trigger output unit and at least one second high-speed photoelectric detector;
the clock and frequency signal recovery module is connected with the synchronous time sequence generation assembly, receives the optical data stream signal output by the data stream optical fan-out module, and outputs recovered clock and recovered frequency information, the adjustable delay frequency signal generation module and the delay data generation module are connected with the synchronous trigger signal output unit, and the channel delay and frequency setting module is in signal connection with the computer control module and is connected with the adjustable delay frequency signal generation module and the delay data generation module.
4. The wide-space ultra-low jitter synchronization signal generation system of claim 3, wherein the synchronization trigger signal output unit comprises a pulse selector and a first high-speed photodetector, the pulse selector is connected to the first high-speed photodetector through a fiber delay line, the pulse selector is connected to the local clock optical fan-out module and the adjustable delay frequency signal generation module, and the delay data generation module is connected to the fiber delay line;
the pulse selector receives one path of optical clock signal output of the local clock optical fan-out module and the frequency signal output by the adjustable delay frequency signal generating module, the optical pulse signal is selected to be output, the optical pulse signal is delayed by the optical fiber delay line and then is connected with the first high-speed photoelectric detector, and the first high-speed photoelectric detector outputs a synchronous trigger signal through high-speed photoelectric conversion.
5. The system of any of claims 1 to 4, wherein the plurality of synchronization signal generators are configured to receive the clock optical signal and the optical data stream signal from the synchronization timing generation module and the network control signal from the computer control module, respectively.
6. A method for generating a wide-space ultra-low jitter synchronous signal is realized based on any one of the wide-space ultra-low jitter synchronous signal generation systems, and is characterized by comprising the following steps:
s1: generating an optical clock signal by taking an optical clock source as a reference clock, and performing multi-path fan-out on the optical clock signal by a clock optical fan-out module to transmit the optical clock signal to a synchronous signal generator;
s2: the synchronous signal generator receives the optical clock signals output by the clock optical fan-out module, multi-path fan-out is carried out again through the local clock optical fan-out module, and at least one path of optical clock signals generate and output synchronous clock signals through the second high-speed photoelectric detector;
s3: setting frequency and channel delay through a computer control module to obtain frequency information and delay information, and recovering according to an optical data stream signal received from a synchronous time sequence generating assembly to obtain a clock signal and a frequency information code through restoration;
generating a delay signal according to the delay information, and generating a frequency signal with delay according to the frequency information code, the frequency information and the delay information;
s4: and selecting an optical pulse signal from the optical clock signals through the frequency signal with time delay, carrying out time delay according to the time delay signal, and then outputting a synchronous trigger signal through the first high-speed photoelectric detector.
7. The method of claim 6, wherein in step S3, the optical data stream signal is output to the synchronization generator by the following steps:
an optical clock signal output by the optical clock source is converted to an electric clock signal by a high-speed photoelectric conversion module through one path output by a clock optical fan-out module, and the electric clock signal and a multi-frequency signal are mixed and encoded and then are fanned out to the synchronous signal generator through data stream light.
8. The method for generating a wide-space ultra-low jitter synchronization signal according to claim 6, wherein in step S3, the delay information includes a first delay information and a second delay information, the delay of the first delay information is greater than the delay of the second delay information, and the second delay information is generated by the delay data generating module to generate the delay signal.
9. The method for generating a wide-space ultra-low jitter synchronization signal as claimed in claim 8, wherein in step S3, the frequency signal with delay is generated as follows:
and comparing the frequency information with the frequency information code obtained by reduction, and outputting a frequency signal with first delay information after the comparison is successful.
10. The method for generating a wide-space ultra-low jitter synchronization signal according to claim 9, wherein in step S4, the specific process of generating the output by the synchronization trigger signal is as follows:
and selecting an optical pulse signal from the optical clock signals output by the local clock signal optical fan-out module through the pulse selector according to the frequency signal with the first delay information, and transmitting the optical pulse signal to the optical fiber delay line, wherein the optical fiber delay line delays the optical pulse signal according to the second delay information, and the delayed optical pulse signal is converted by the high-speed photoelectric conversion module to obtain a synchronous trigger signal with set frequency and delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560644.0A CN114967838B (en) | 2022-05-23 | 2022-05-23 | System and method for generating wide-space ultra-low jitter synchronous signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210560644.0A CN114967838B (en) | 2022-05-23 | 2022-05-23 | System and method for generating wide-space ultra-low jitter synchronous signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114967838A true CN114967838A (en) | 2022-08-30 |
| CN114967838B CN114967838B (en) | 2023-07-11 |
Family
ID=82985497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210560644.0A Active CN114967838B (en) | 2022-05-23 | 2022-05-23 | System and method for generating wide-space ultra-low jitter synchronous signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114967838B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6493408B1 (en) * | 1998-11-18 | 2002-12-10 | Nec Corporation | Low-jitter data transmission apparatus |
| US20060133816A1 (en) * | 2004-12-16 | 2006-06-22 | Jong-Yoon Shin | Apparatus for synchronizing clock using source synchronous clock in optical transmission system |
| CN1906867A (en) * | 2003-12-10 | 2007-01-31 | 普林斯顿大学理事会 | All-optical, 3R regeneration using the sagnac and mach-zehnder versions of the terahertz optical asymmetric demultiplexer (TOAD) |
| CN105811970A (en) * | 2016-04-21 | 2016-07-27 | 中国工程物理研究院激光聚变研究中心 | Multichannel arbitrary waveform generating system |
| CN108111243A (en) * | 2016-11-25 | 2018-06-01 | 中兴通讯股份有限公司 | Clock transmission system and corresponding clock synchronization process method and apparatus |
| CN110212916A (en) * | 2019-06-04 | 2019-09-06 | 中国工程物理研究院激光聚变研究中心 | A kind of extensively distribution low jitter synchronised clock dissemination system and method |
| CN110620570A (en) * | 2019-09-24 | 2019-12-27 | 中国工程物理研究院激光聚变研究中心 | Low-jitter pulse width high-resolution adjustable square wave pulse generation system and method |
| CN113704162A (en) * | 2021-09-01 | 2021-11-26 | 四川拓普测控科技有限公司 | Special high-speed data transmission bus for measuring instrument |
-
2022
- 2022-05-23 CN CN202210560644.0A patent/CN114967838B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6493408B1 (en) * | 1998-11-18 | 2002-12-10 | Nec Corporation | Low-jitter data transmission apparatus |
| CN1906867A (en) * | 2003-12-10 | 2007-01-31 | 普林斯顿大学理事会 | All-optical, 3R regeneration using the sagnac and mach-zehnder versions of the terahertz optical asymmetric demultiplexer (TOAD) |
| US20060133816A1 (en) * | 2004-12-16 | 2006-06-22 | Jong-Yoon Shin | Apparatus for synchronizing clock using source synchronous clock in optical transmission system |
| CN105811970A (en) * | 2016-04-21 | 2016-07-27 | 中国工程物理研究院激光聚变研究中心 | Multichannel arbitrary waveform generating system |
| CN108111243A (en) * | 2016-11-25 | 2018-06-01 | 中兴通讯股份有限公司 | Clock transmission system and corresponding clock synchronization process method and apparatus |
| CN110212916A (en) * | 2019-06-04 | 2019-09-06 | 中国工程物理研究院激光聚变研究中心 | A kind of extensively distribution low jitter synchronised clock dissemination system and method |
| CN110620570A (en) * | 2019-09-24 | 2019-12-27 | 中国工程物理研究院激光聚变研究中心 | Low-jitter pulse width high-resolution adjustable square wave pulse generation system and method |
| CN113704162A (en) * | 2021-09-01 | 2021-11-26 | 四川拓普测控科技有限公司 | Special high-speed data transmission bus for measuring instrument |
Non-Patent Citations (3)
| Title |
|---|
| YIN CHEN: "Ultra-low power time synchronization using passive radio receivers", 《IEEE》, pages 1 - 13 * |
| 刘亚迪: "用于星光III激光同步系统的低抖动时钟整形技术", 《太赫兹科学与电子信息学报》, pages 1109 - 1112 * |
| 罗文珑: "多通道同步脉冲合成模块设计与实现", 《中国优秀硕士学位论文全文数据库》, pages 135 - 986 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114967838B (en) | 2023-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110212916B (en) | Wide-distribution low-jitter synchronous clock distribution system and method | |
| CN102215103B (en) | System and method for converting upstream impulse mode data to continuous mode data | |
| US8050373B2 (en) | Phase interpolator based transmission clock control | |
| CN109194431A (en) | A kind of clock time-frequency one transmission method and device | |
| US7590212B2 (en) | System and method for adjusting the phase of a frequency-locked clock | |
| CN114967838B (en) | System and method for generating wide-space ultra-low jitter synchronous signals | |
| CN102201906A (en) | Clock signal processing method and equipment | |
| Kwong et al. | Ultrafast all-optical code-division multiple-access (CDMA) fiber-optic networks | |
| CN111245545A (en) | High-precision trigger synchronization method based on optical fiber link | |
| CN2751314Y (en) | Digital video-audio optical fiber transmission system | |
| CN110620570B (en) | Low-jitter pulse width high-resolution adjustable square wave pulse generation system and method | |
| CN110519057B (en) | Classical signal coding and decoding method, synchronization method and device for quantum key distribution system | |
| CN112416848B (en) | Source chip, destination chip, data transmission method and processor system | |
| CN112713901A (en) | Data stable transmission method and system based on LVDS | |
| CN112383348A (en) | Time-sharing multiplexing time-frequency transmission method based on optical fiber ring network system | |
| CN108111224B (en) | A kind of asynchronous fiber optic communication method, apparatus and network | |
| CN117749263B (en) | Receiving device based on space laser communication and space laser communication system | |
| CN104836754A (en) | Method and device for achieving backboard auto-negotiation function by means of high speed Serdes | |
| CN111371496A (en) | Optical backplane system and electric signal transmission method | |
| EP0476968A2 (en) | Clock recovery circuit | |
| CN112653515B (en) | TR unit networking method based on serial LVDS interface and double token ring | |
| CN219227609U (en) | JESD204B data transmission system based on optical fiber medium | |
| KR100260623B1 (en) | Received data processing apparatus in optical transmitting system | |
| CN117749263A (en) | Receiving device based on space laser communication and space laser communication system | |
| JP2002064478A (en) | Parallel optical transmitting method and transmitter and receiver in parallel optical transmitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |