CN207706188U - A kind of steady phase Transmission system of distribution type fiber-optic based on phase compensation - Google Patents
A kind of steady phase Transmission system of distribution type fiber-optic based on phase compensation Download PDFInfo
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- CN207706188U CN207706188U CN201721848840.9U CN201721848840U CN207706188U CN 207706188 U CN207706188 U CN 207706188U CN 201721848840 U CN201721848840 U CN 201721848840U CN 207706188 U CN207706188 U CN 207706188U
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Abstract
The utility model discloses a kind of steady phase Transmission systems of distribution type fiber-optic based on phase compensation, including latency measurement control unit, circulator, photoswitch, light source, wavelength division multiplexer, fibre delay line and speculum；Several fibre delay lines form a distribution type fiber-optic delay chain, optical fiber delay both link ends are separately connected a wavelength division multiplexer, one of wavelength division multiplexer is connected to photoswitch and light source respectively, and photoswitch is connected to by circulator with latency measurement control unit；Another wavelength division multiplexer is equipped with the speculum for reflective portion optical signal.The utility model is by introducing latency measurement control unit, realize the delay volume for accurately measuring all fibre delay lines, and by the way that threshold value is arranged, effectively control the delay volume of each fibre delay line, the stability for improving distribution type fiber-optic delay chain delay inequality, compensating for traditional distributed fibre-optic transmission system (FOTS) surely can not mutually export the defect of radiofrequency signal.
Description
Technical field
The utility model is related to a kind of steady phase Transmission systems of distribution type fiber-optic based on phase compensation, belong to optical fiber transmission skill
Art field.
Background technology
Fibre-optic transmission system (FOTS) is the electro-optical system for using optical fibers as medium and being transmitted into row information, with transmission loss
It is low, bandwidth is high, the advantage of electromagnetism interference etc., be widely used in space flight measurement and control, radar, electronic reconnaissance, electronic countermeasure, point
The multiple fields such as cloth antenna.Moreover, because optical fiber itself has the characteristics such as low-loss and low intrinsic noise, in application demand and
Under the action of many factors such as cost, by it, come transmitting radio frequency signal, there are many advantages.
The atomic clock that mid-twentieth century occurs makes the mankind enter the new era of exact timing, the frequency mark of high stable
Standard has pushed the development in many fields, such as navigation, high-speed communication, astronomical observation, space flight measurement and control etc..The application of frequency standard is past
It is past to be related to its transmission.With the development of atomic frequency standard, the attainable stabilization of traditional transmission method institute is redeemed oneself through low
In the stability of atomic clock, this contradiction makes through optical fiber come transmission frequency signal, in nineteen nineties once going out
Now just become the hot spot of research.
Distributed radar, in the fibre-optic transmission system (FOTS) of phased array antenna distributed, each transmission link phase difference will be kept
It is highly consistent.But optical fiber is easy to be influenced by environmental factor and changing for transmission delay occur, and then cause to transmit wherein
The frequency of radiofrequency signal, phase generate shake, prodigious drift can occur for the phase of radio-frequency transmission signals, this can cause radar
The decline of the performances such as coherent reduces ability of the radar to Detection of Weak Signals, and therefore, there is an urgent need for design one kind to ensure that radio frequency is believed
The distribution type fiber-optic Transmission system of number steady mutually transmission.
Utility model content
The utility model solve the technical issues of be：Overcome the deficiencies in the prior art, the utility model provide a kind of base
In the steady phase Transmission system of the distribution type fiber-optic of phase compensation accurate measurement institute is realized by introducing latency measurement control unit
There is the delay volume of fibre delay line, and by the way that threshold value is arranged, effectively controls the delay volume of each fibre delay line, improve distribution
The stability of optical fiber delay chain-circuit time delay difference, compensating for traditional distributed fibre-optic transmission system (FOTS) surely can not mutually export radiofrequency signal
Defect.
The technical solution of the utility model is：
A kind of steady phase Transmission system of distribution type fiber-optic based on phase compensation, including latency measurement control unit, circulator,
Photoswitch, light source, wavelength division multiplexer, fibre delay line and speculum；Several fibre delay lines form a distribution type fiber-optic
Delay chain, optical fiber delay both link ends are separately connected a wavelength division multiplexer, and one of wavelength division multiplexer is opened with light respectively
Pass is connected to light source, and photoswitch is connected to by circulator with latency measurement control unit；Another wavelength division multiplexer, which is equipped with, to be used
In the speculum of reflective portion optical signal.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the latency measurement control is single
Member includes swept signal source, electrical to optical converter, photoelectric converter and processor；The swept-frequency signal that swept signal source generates is through electric light
Converter is transmitted to circulator after being converted to optical signal；The latency measurement optical signal by speculum reflection that circulator receives is through light
Electric transducer is transmitted to processor after being converted to electric signal, and processor is connected to swept signal source.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the swept signal source uses
Sine wave frequency sweep signal generator.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the electrical to optical converter and light
100,000,000 single mode single fiber electricals to optical converter and 100,000,000 single mode double-fiber fiber optical transceivers are respectively adopted in electric transducer.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the processor uses Godson
Processor, processor measure the delay volume of fibre delay line using frequency sweep method, and are prolonged by all optical fiber of photoswitch handover measurement
The delay volume of slow line；The delay volume of any one fibre delay line is used as with reference to being worth, the delay volume of remaining fibre delay line with
Reference value makes the difference, and difference is less than the threshold value of processor setting.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the circulator uses three ends
Mouth single mode optical circulator, first port are connected to electrical to optical converter, and second port is connected to photoswitch, and third port turns with photoelectricity
Parallel operation is connected to.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the photoswitch is using machinery
Formula photoswitch or electrooptical switching.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the wavelength division multiplexer uses
CWDM Wavelength division multiplexer/demultiplexers or DWDM Wavelength division multiplexer/demultiplexers.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the fibre delay line uses
The quantity of microwave optical fiber delay line or numerical control fibre delay line, fibre delay line is no less than two.
In a kind of above-mentioned steady phase Transmission system of distribution type fiber-optic based on phase compensation, the speculum is used and is aluminized
Film speculum or plating silverskin speculum.
The advantageous effect of the utility model compared with prior art is：
【1】The utility model will be coupling in for the optical signal of measurement in optical fiber delay link by photoswitch, and be utilized
Wavelength division multiplexer is split or is merged to optical signal, will not be interfered to signal transmission, when improving optical fiber delay link
The measurement accuracy for the amount of prolonging.
【2】The utility model by preset algorithm in optimized processor, can as needed to fibre delay line when
The amount of prolonging flexibly is adjusted, and workload when system compensates every time is reduced, and meets the design of stabilized fiber phase Transmission system
It is required that.
【3】The utility model compact overall structure is suitable for various working environments, and service life is relatively long, in complexity
Under operating mode still can good operation, have the characteristics that applied widely, have good market application prospect.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and is constituted part of this application, the utility model
Embodiment and its explanation are not constituted improper limits to the present invention for explaining the utility model.In the accompanying drawings：
Fig. 1 is utility model diagram
Fig. 2 is latency measurement control unit schematic diagram
Wherein：1 latency measurement control unit；2 circulators；3 photoswitches；4 light sources；5 wavelength division multiplexers；6 fibre delay lines；
7 speculums；11 swept signal sources；12 electricals to optical converter；13 photoelectric converters；14 processors；
Specific implementation mode
To make the embodiment of the utility model more be illustrated, explanation and specific embodiment are to the utility model below in conjunction with the accompanying drawings
It is further described：
As shown in Figure 1, a kind of steady phase Transmission system of distribution type fiber-optic based on phase compensation, including latency measurement control are single
Member 1, circulator 2, photoswitch 3, light source 4, wavelength division multiplexer 5, fibre delay line 6 and speculum 7；Several fibre delay lines 6
A distribution type fiber-optic delay chain is composed in parallel, optical fiber delay both link ends are separately connected a wavelength division multiplexer 5, wherein one
A wavelength division multiplexer 5 is connected to photoswitch 3 and light source 4 respectively, and photoswitch 3 is connected by circulator 2 and latency measurement control unit 1
It is logical；Another wavelength division multiplexer 5 is equipped with the speculum 7 for reflective portion optical signal.
As shown in Figure 2, it is preferred that latency measurement control unit 1 includes swept signal source 11, electrical to optical converter 12, photoelectricity
Converter 13 and processor 14；The swept-frequency signal that swept signal source 11 generates is transmitted after electrical to optical converter 12 is converted to optical signal
To circulator 2；The latency measurement optical signal reflected by speculum 7 that circulator 2 receives is converted to telecommunications through photoelectric converter 13
Processor 14 is transmitted to after number, processor 14 is connected to swept signal source 11.
Preferably, swept signal source 11 uses sine wave frequency sweep signal generator.
Preferably, 100,000,000 single mode single fiber electricals to optical converter and 100,000,000 are respectively adopted in electrical to optical converter 12 and photoelectric converter 13
Single mode double-fiber fiber optical transceiver.
Preferably, processor 14 uses Loongson processor, processor 14 to measure the time delay of fibre delay line 6 using frequency sweep method
Amount, and pass through the delay volume of all fibre delay lines of 3 handover measurement of photoswitch 6；The delay volume of any one fibre delay line 6 is made
Delay volume for reference value, remaining fibre delay line 6 makes the difference with reference value, and difference is less than the threshold value that processor 14 is arranged.
Preferably, circulator 2 uses three port single mode optical circulators, first port to be connected to electrical to optical converter 12, and second
Port is connected to photoswitch 3, and third port is connected to photoelectric converter 13.
Preferably, photoswitch 3 uses mechanical optical switch or electrooptical switching.
Preferably, wavelength division multiplexer 5 uses CWDM Wavelength division multiplexer/demultiplexers or DWDM Wavelength division multiplexer/demultiplexers.
Preferably, fibre delay line 6 uses microwave optical fiber delay line or numerical control fibre delay line, the number of fibre delay line 6
Amount no less than two.
Preferably, speculum 7 is using aluminizer speculum or plating silverskin speculum.
The operation principle of the utility model is：
In transmitting terminal, swept signal source 11 generates the swept-frequency signal adopted when measurement, light is converted to through electrical to optical converter 12
After signal, passes sequentially through circulator 2, photoswitch 3, wavelength division multiplexer 5 and the optical signal that light source 4 is sent out and be combined into all the way into several
In the optical fiber delay link that root fibre delay line 6 forms；
In receiving terminal, the optical signal and latency measurement optical signal that light source 4 is sent out are separated using wavelength division multiplexer 5, light source 4
The optical signal normal transmission sent out；Latency measurement optical signal is back to transmitting after the reflection of speculum 7 along transmission path direction
End, then it is transmitted to processor 14 after passing sequentially through wavelength division multiplexer 5, circulator 2, photoelectric converter 13；
Processor 14 measures the round-trip delay of simple optical fiber delay line 6 using frequency sweep method, and the half of value is single light
The unidirectional transmission time delay amount of fine delay line 6；Pass through the unidirectional transmission time delay of all fibre delay lines of 3 handover measurement of photoswitch 6 again
Amount；And using the delay volume of any one fibre delay line 6 as with reference to being worth, the delay volume of remaining fibre delay line 6 with reference
Value makes the difference, and difference should be less than preset threshold value.
When difference be more than threshold value, which is controlled, adjust retardation, make its difference be less than threshold value,
The stability for maintaining optical fiber delay chain circuit transmission time delay difference, to realize that distribution type fiber-optic Transmission system is surely mutually transmitted.
The content not being described in detail in the utility model specification is known to the skilled person technology.
Claims (10)
1. a kind of steady phase Transmission system of distribution type fiber-optic based on phase compensation, it is characterised in that：It is controlled including latency measurement single
First (1), circulator (2), photoswitch (3), light source (4), wavelength division multiplexer (5), fibre delay line (6) and speculum (7)；It is several
Root fibre delay line (6) forms a distribution type fiber-optic delay chain, and it is multiple that optical fiber delay both link ends are separately connected a wavelength-division
With device (5), one of wavelength division multiplexer (5) is connected to photoswitch (3) and light source (4) respectively, and photoswitch (3) passes through circulator
(2) it is connected to latency measurement control unit (1)；Another wavelength division multiplexer (5) is equipped with for the anti-of reflective portion optical signal
Penetrate mirror (7).
2. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 1, it is characterised in that：
The latency measurement control unit (1) includes swept signal source (11), electrical to optical converter (12), photoelectric converter (13) and processing
Device (14)；The swept-frequency signal that swept signal source (11) generates is transmitted to circulator after electrical to optical converter (12) is converted to optical signal
(2)；The latency measurement optical signal by speculum (7) reflection that circulator (2) receives is converted to telecommunications through photoelectric converter (13)
Processor (14) is transmitted to after number, processor (14) is connected to swept signal source (11).
3. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 2, it is characterised in that：
The swept signal source (11) uses sine wave frequency sweep signal generator.
4. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 2, it is characterised in that：
100,000,000 single mode single fiber electricals to optical converter are respectively adopted in the electrical to optical converter (12) and photoelectric converter (13) and 100,000,000 single modes are double
Fine fiber optical transceiver.
5. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 2, it is characterised in that：
The processor (14) uses Loongson processor, processor (14) to measure the delay volume of fibre delay line (6) using frequency sweep method, and
Pass through the delay volume of all fibre delay lines of photoswitch (3) handover measurement (6)；The delay volume of any one fibre delay line (6)
As with reference to being worth, the delay volume of remaining fibre delay line (6) makes the difference with reference value, and difference is less than the threshold of processor (14) setting
Value.
6. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 1, it is characterised in that：
The circulator (2) uses three port single mode optical circulators, first port to be connected to electrical to optical converter (12), second port and light
(3) connection is switched, third port is connected to photoelectric converter (13).
7. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 1, it is characterised in that：
The photoswitch (3) uses mechanical optical switch or electrooptical switching.
8. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 1, it is characterised in that：
The wavelength division multiplexer (5) uses CWDM Wavelength division multiplexer/demultiplexers or DWDM Wavelength division multiplexer/demultiplexers.
9. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 1, it is characterised in that：
The fibre delay line (6) uses microwave optical fiber delay line or numerical control fibre delay line, the quantity of fibre delay line (6) to be no less than
Two.
10. the steady phase Transmission system of a kind of distribution type fiber-optic based on phase compensation according to claim 1, feature exist
In：The speculum (7) is using aluminizer speculum or plating silverskin speculum.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917477A (en) * | 2020-08-12 | 2020-11-10 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission system and method based on ring topology |
| CN111934773A (en) * | 2020-08-12 | 2020-11-13 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission distribution system and method based on loop topology |
| CN112198590A (en) * | 2020-09-15 | 2021-01-08 | 北京无线电计量测试研究所 | Active compensation method and device based on optical fiber stretcher and electric optical delay line |
| CN114190974A (en) * | 2021-06-25 | 2022-03-18 | 暨南大学 | Ultrasonic imaging system and imaging method thereof |
| CN114938245A (en) * | 2022-05-18 | 2022-08-23 | 浙江大学 | Distributed multi-antenna cooperative phase stabilization method and device for future broadband wireless communication |
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2017
- 2017-12-26 CN CN201721848840.9U patent/CN207706188U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917477A (en) * | 2020-08-12 | 2020-11-10 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission system and method based on ring topology |
| CN111934773A (en) * | 2020-08-12 | 2020-11-13 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission distribution system and method based on loop topology |
| CN111917477B (en) * | 2020-08-12 | 2021-06-01 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission system and method based on ring topology |
| CN111934773B (en) * | 2020-08-12 | 2021-06-08 | 中国电子科技集团公司第四十四研究所 | Distributed optical fiber broadband phase-stable transmission distribution system and method based on loop topology |
| CN112198590A (en) * | 2020-09-15 | 2021-01-08 | 北京无线电计量测试研究所 | Active compensation method and device based on optical fiber stretcher and electric optical delay line |
| CN114190974A (en) * | 2021-06-25 | 2022-03-18 | 暨南大学 | Ultrasonic imaging system and imaging method thereof |
| CN114190974B (en) * | 2021-06-25 | 2024-05-31 | 暨南大学 | Ultrasonic imaging system and imaging method thereof |
| CN114938245A (en) * | 2022-05-18 | 2022-08-23 | 浙江大学 | Distributed multi-antenna cooperative phase stabilization method and device for future broadband wireless communication |
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