CN103490817B - The photonic propulsion generation device of high-frequency microwave and millimeter wave and feeding method - Google Patents
The photonic propulsion generation device of high-frequency microwave and millimeter wave and feeding method Download PDFInfo
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- CN103490817B CN103490817B CN201310460850.5A CN201310460850A CN103490817B CN 103490817 B CN103490817 B CN 103490817B CN 201310460850 A CN201310460850 A CN 201310460850A CN 103490817 B CN103490817 B CN 103490817B
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Abstract
The present invention discloses photonic propulsion generation device and the feeding method of a kind of high-frequency microwave and millimeter wave.This device comprises central node equipment, intermediary device and distant-end node equipment, by Fiber connection between central node equipment and distant-end node equipment, formed by intermediate node and produce and distribution network based on the high-frequency microwave of EPON and the photonic propulsion of millimeter wave.This feeding method forms optical-electronic oscillator based on EPON in multiple spot, strange land simultaneously, and optical-electronic oscillator is locked onto on the rubidium frequency standard of Centroid, the photonic propulsion realizing high-frequency microwave and millimeter produces and distributes, and the method can produce high-frequency microwave and millimeter wave, each other frequency between multiple spot simultaneously can identical or not identical, low, the frequency stabilization of making an uproar mutually that produces signal.On the star that can be applicable to limited space photonic propulsion forward, deep space network, time and frequency standards network etc. between phased array radar and the large-scale antenna array of deep space probing.
Description
Technical field
The present invention relates to photonic propulsion generation device and the feeding method of a kind of high-frequency microwave and millimeter wave, the method combines optical-electronic oscillator and produces high-frequency microwave and millimeter-wave signal and make an uproar low with structural advantage that is EPON mutually, for the strange land realizing the steady Low phase noise high-frequency microwave of high frequency and millimeter-wave signal produce, long-distance transmissions and networking distribute the solution providing and have competitive advantage.
Background technology
At present, electricity high-frequency microwave and millimeter wave power source (Solid Source) are mainly born by vacuum electron device and solid state power source.Owing to being subject to the impact of the electric properties such as junction capacitance, the tuning range narrower (being less than l0%) of Solid Source, amplitude-frequency characteristic is poor, phase noise is higher; More disadvantageously, affect by factors such as carrier transit times, the frequency of oscillation of Solid Source is usually within 100GHz.But the signal highest frequency produced based on optical means can reach 360GHz, phase noise can be low to-140dBc/Hz, and continuous tuning coverage can reach 90%.Therefore, photonic propulsion method be expected to become break through existing Solid Source limitation, avoid complicated semiconductor technology to realize the effective technology means of broadband, large tuning range, the contour performance Millimeter-Wave Source of low phase noise.
Optical-electronic oscillator (OEO) be wherein most representative, move towards practical photonic propulsion microwave and millimetre-wave generator (source) the earliest.Optical-electronic oscillator is by light source, optical modulator, optical fiber, detector, electrical filter, the photoelectricity hybrid resonant device of the composition such as phase shifter and amplifier, its general principle is that the sideband signals that modulator produces enters photodetector through one section of optical fiber and amplification, after filtering, phase shift, feeds back to modulator after amplification to the microwave that photodetector produces.Through repeatedly feedback effect, be only positioned at the microwave resonance pattern that filter band leads to scope and could obtain effectively vibration.Because the Q value of optical fiber is very high, so the microwave noise that optical-electronic oscillator produces is very low, far below traditional microwave source.
The energy-storage travelling wave tube of optical-electronic oscillator is optical fiber, need with longer optical fiber as improved Q.Fiber lengths lengthening can bring microwave oscillation mode spacing to diminish, and causes multi-mode to export, and optical fiber aggravates by the impact of the factor such as temperature, pressure of environment, causes the output stability of optical-electronic oscillator to be deteriorated.Meanwhile, the electrical filter completing microwave oscillation model selection function in the structure of optical-electronic oscillator limits the microwave and millimeter-wave signal frequency limited that optoelectronic oscillation exports, because be difficult to find suitable high-frequency narrow-band bandpass filter under high-frequency very much.The technical problem run into solve optical-electronic oscillator needs to propose new principle and method.
Summary of the invention
Technical problem: the photonic propulsion generation device and the feeding method that the object of this invention is to provide a kind of high-frequency microwave and millimeter wave, its device realized comprises central node equipment, distant-end node equipment and intermediary device, the mechanism that it realizes high-frequency microwave and millimeter wave produces and distribute is based on EPON interconnect centric node and distant-end node, the optical-electronic oscillator of Centroid injection locking distant-end node, distant-end node exports high-frequency microwave and millimeter wave, thus the optics realizing high-frequency microwave and millimeter wave produces and transmission distributes.
Technical scheme: the photonic propulsion generation device of high-frequency microwave disclosed by the invention and millimeter wave and feeding method, its working mechanism is that the optical-electronic oscillator (OEO) of Centroid to multiple distant-end node carries out long-range injection locking, distant-end node exports microwave and the millimeter-wave signal of identical or different frequency and phase delay separately, adopts passive optical distribution network (PON) between distant-end node and Centroid.Be characterized in producing based on optical-electronic oscillator mode, frequency and phase-adjustable control, the steady Low phase noise of high frequency export, on the star that can be applicable to limited space photonic propulsion forward, deep space network, time and frequency standards network etc. between phased array radar and the large-scale antenna array of deep space probing.
The advantages such as the loss of optical fiber is little, channel is stablized, temperature coefficient is lower and communication signal to noise ratio is high are that the transmission of high-frequency microwave and millimeter-wave signal provides excellent physical channel.Optical-electronic oscillator Q value exceeds several order of magnitude than existing oscillator, the short-term stability of output signal is good, by central station, long-range injection locking is carried out to optical-electronic oscillator, thus improve optical-electronic oscillator long-time stability, the remote strange land realizing high-frequency microwave and millimeter-wave signal produces, multiple spot distributes.
A kind of photonic propulsion generation device based on high-frequency microwave and millimeter wave of the present invention comprises central node equipment, intermediary device and distant-end node station equipment, wherein,
In central node equipment, the input termination Centroid of phaselocking frequency multiplier, exports the input of termination optical transmission module;
In intermediary device, the input of optical branching device connects the output of optical transmission module by optical fiber, and the output of optical branching device connects distant-end node equipment by optical fiber;
In distant-end node equipment, comprise N number of distant-end node arranged side by side, N=8,16,32 ..., in each distant-end node,
Optical modulator, optical branching device, light are received module I, amplifier, electrical filter, phase shifter, power splitter and optical modulator and are linked in sequence; Another output of optical branching device is received module II by optical filter and light and is connected, and it is that frequency multiplication exports that light receives module II output; Another output of power splitter is that fundamental frequency exports.
The feeding method of the photonic propulsion generation device of high-frequency microwave of the present invention and millimeter wave forms optical-electronic oscillator based on EPON in multiple spot, strange land simultaneously, and optical-electronic oscillator is locked onto on the rubidium frequency standard (Rb atom frequency marking) of Centroid, the photonic propulsion realizing high-frequency microwave and millimeter produces and distributes, and concrete grammar is:
At Centroid, the 10MHz signal locking frequency multiplication that rubidium frequency standard exports by phaselocking frequency multiplier, to 10GHz, inputs optical transmission module;
At intermediate node, the light signal that Centroid exports is divided into N road by optical branching device, N=8,16,32 ..., deliver to N number of distant-end node respectively;
The internal structure of N number of distant-end node is identical, in each distant-end node, the input of optical modulator receives the light signal of optical branching device output Optical Fiber Transmission, the output signal of optical modulator send optical branching device to be divided into two tunnels, one tunnel is sent light to receive module I and is converted the signal of telecommunication to, power transmission filter filtering, phase shifter phase shift after amplifier amplifies, then send optical modulator through power splitter; Another road that optical branching device exports leaches the light signal of two wavelength through optical filter, the frequency-doubled signal sending light to receive module II beat output 10GHz and n × 10GHz, n=2,3,4 Power splitter exports the fundamental frequency signal of 10GHz.
Beneficial effect: the present invention discloses photonic propulsion generation device and the feeding method of a kind of high-frequency microwave and millimeter wave.Corresponding apparatus and method are made up of central node equipment, intermediary device and distant-end node station equipment, connected by optical cable between central station and station far away, formed by intermediate node and produce and distribution network based on the high-frequency microwave of EPON and the photonic propulsion of millimeter wave.Due to the optical-electronic oscillator of high q-factor is locked in center rubidium frequency standard, simultaneously in conjunction with the structural advantage of EPON, the method can produce high-frequency microwave and millimeter wave, each other frequency between multiple spot simultaneously can identical or not identical, low, the frequency stabilization of making an uproar mutually that produces signal.On the star that the method can be applicable to limited space photonic propulsion forward, deep space network, time and frequency standards network etc. between phased array radar and the large-scale antenna array of deep space probing.
Accompanying drawing explanation
Fig. 1 is based on high-frequency microwave and the photonic propulsion generation device of millimeter wave and the system block diagram of feeding method.
Wherein have: optical transmission module 1, phaselocking frequency multiplier 2, light distributor 3, optical modulator 4, optical branching device 5, optical filter 6, light receive module I 7, light receives module II 8, power splitter 9, amplifier 10, phase shifter 11, electrical filter 12.
Embodiment
Optical transmission module 1 adopts direct wide-band modulation Distributed Feedback Laser,
Phaselocking frequency multiplier 2 adopts electric frequency synthesizer of phase locking,
Light distributor 3 adopts the optical branching device of 1 × N,
Optical modulator 4 adopts MZM optical modulator,
Optical branching device 5 adopts the optical branching device of 1 × 2,
Optical filter 6 adopts fiber grating or the FP etalon filter of dual wavelength,
Light receives the optical fiber receive module that module I 7 adopts bandwidth 10G,
Light receives the high-speed light receiving unit that module II 8 adopts more than bandwidth 60G,
Power splitter 9 adopts the microwave power distributor of 1 × 2,
Amplifier 10 adopts the some audio amplifier of 10G,
The voltage-controlled microwave phase shifter of phase shifter 11,
Electrical filter 12 adopts centre frequency to be the narrow band filter of 10G.
This device comprises central node equipment, intermediary device and distant-end node equipment, wherein,
In central node equipment, the input termination Centroid of phaselocking frequency multiplier 2, exports the input of termination optical transmission module 1; In intermediary device, the input of optical branching device 3 connects the output of optical transmission module 1 by optical fiber, and the output of optical branching device 3 connects distant-end node equipment by optical fiber; In distant-end node equipment, comprise N number of distant-end node arranged side by side, N=8,16,32 ..., in each distant-end node, optical modulator 4, optical branching device 5, light are received module I 7, amplifier 10, electrical filter 12, phase shifter 11, power splitter 9 and optical modulator 4 and are linked in sequence; Another output of optical branching device 5 is received module II 8 by optical filter 6 with light and is connected, and it is that frequency multiplication exports that light receives module II 8 output; Another output of power splitter 9 is that fundamental frequency exports.
This generation device and feeding method form optical-electronic oscillator based on EPON in multiple spot, strange land simultaneously, and lock onto on the rubidium frequency standard of Centroid by optical-electronic oscillator, and the photonic propulsion realizing high-frequency microwave and millimeter produces and distributes, and is specially:
At Centroid, the 10MHz signal locking frequency multiplication that rubidium frequency standard exports by phaselocking frequency multiplier 2, to 10GHz, inputs optical transmission module 1;
Intermediate node, the light signal that Centroid exports is divided into N road (N=8,16,32 by optical branching device 3 ...) deliver to N number of distant-end node;
The internal structure of N number of distant-end node is identical, for the 1st distant-end node introduction, the input of optical modulator 4 receives the light signal of Optical Fiber Transmission, output send optical branching device 5 to be divided into two tunnels, one tunnel is sent light to receive module I 7 and is converted the signal of telecommunication to, amplifier 10 amplifies the filtering of rear power transmission filter 12, phase shifter 11 phase shift, optical modulator 4 is sent through power splitter 9, another road leaches the light signal of two wavelength through optical filter 6, the frequency-doubled signal sending light to receive module II 8 beat output 10GHz and n × 10GHz(n=2,3,4 ...), power splitter exports the signal of 10GHz.
Claims (2)
1., based on a photonic propulsion generation device for high-frequency microwave and millimeter wave, it is characterized in that this device comprises central node equipment, intermediary device and distant-end node station equipment, wherein,
In central node equipment, the input termination Centroid of phaselocking frequency multiplier (2), exports the input of termination optical transmission module (1);
In intermediary device, the input of optical branching device (3) connects the output of optical transmission module (1) by optical fiber, and the output of optical branching device (3) connects distant-end node equipment by optical fiber;
In distant-end node equipment, comprise N number of distant-end node arranged side by side, N=8,16,32 ..., in each distant-end node,
Optical modulator (4), optical branching device (5), light are received module I (7), amplifier (10), electrical filter (12), phase shifter (11), power splitter (9) and optical modulator (4) and are linked in sequence; Another output of optical branching device (5) is received module II (8) by optical filter (6) with light and is connected, and it is that frequency multiplication exports that light receives module II (8) output; Another output of power splitter (9) is that fundamental frequency exports.
2. the feeding method of the photonic propulsion generation device of a high-frequency microwave as claimed in claim 1 and millimeter wave, it is characterized in that this feeding method forms optical-electronic oscillator based on EPON in multiple spot, strange land simultaneously, and optical-electronic oscillator is locked onto on the rubidium frequency standard of Centroid, the photonic propulsion realizing high-frequency microwave and millimeter produces and distributes, and concrete grammar is:
At Centroid, the 10MHz signal locking frequency multiplication that rubidium frequency standard exports by phaselocking frequency multiplier (2), to 10GHz, inputs optical transmission module (1);
At intermediate node, the light signal that Centroid exports is divided into N road by optical branching device (3), N=8,16,32 ..., deliver to N number of distant-end node respectively;
The internal structure of N number of distant-end node is identical, in each distant-end node, the input of optical modulator (4) receives the light signal of optical branching device (3) output Optical Fiber Transmission, the output signal of optical modulator (4) send optical branching device (5) to be divided into two tunnels, one tunnel is sent light to receive module I (7) and is converted the signal of telecommunication to, power transmission filter (12) filtering after amplifier (10) amplifies, phase shifter (11) phase shift, then send optical modulator (4) through power splitter (9); Another road that optical branching device (5) exports leaches the light signal of two wavelength through optical filter (6), the frequency-doubled signal sending light to receive module II (8) beat output 10GHz and n × 10GHz, n=2,3,4 Power splitter (9) exports the fundamental frequency signal of 10GHz.
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| CN103840885B (en) * | 2014-02-27 | 2017-02-08 | 聊城大学 | High carrier frequency and high speed light millimeter wave generating and long-span transmission system |
| CN104092491B (en) * | 2014-06-23 | 2016-08-31 | 中国人民解放军理工大学 | Optical-electronic oscillator produces the apparatus and method of optical frequency com |
| CN104821850B (en) * | 2015-04-09 | 2017-07-14 | 中国科学院半导体研究所 | Utilize the device of optical-electronic oscillator active calibration optical fiber transmission microwave signal phase |
| CN105743492A (en) * | 2016-01-28 | 2016-07-06 | 中国电子科技集团公司第十研究所 | 10MHz signal frequency scale shunting equipment |
| CN112557373A (en) * | 2019-09-26 | 2021-03-26 | 南京理工大学 | Zero-difference type broadband microwave spectrometer |
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