CN204408274U - A kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering - Google Patents
A kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering Download PDFInfo
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- CN204408274U CN204408274U CN201520158516.9U CN201520158516U CN204408274U CN 204408274 U CN204408274 U CN 204408274U CN 201520158516 U CN201520158516 U CN 201520158516U CN 204408274 U CN204408274 U CN 204408274U
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Abstract
One without the adjustable 3 frequency-doubled signal generating meanss of filtering without local oscillator, solves conventional photonic frequency-doubled signal generator and when without radio-frequency (RF) local oscillator source, cannot generate the problem of millimeter-wave signal.This device can utilize the method for photon frequency doubling to obtain 3 frequency doubling millimetre wave signals when not using radio-frequency (RF) local oscillator source and filtering device, and produce signal frequency and can regulate continuously.Greatly reduce millimeter-wave systems cost, and provide feasible scheme for following millimeter-wave systems height is integrated.Be specially adapted to optical communication, microwave the technical field such as millimetre-wave attenuator, microwave photon (RoF:Radio over Fiber), Fibre Optical Sensor and radar.
Description
Technical field
The utility model relates to a kind of optical frequency-doubling signal generation apparatus, be applicable to optical communication, microwave the technical field such as millimetre-wave attenuator, microwave photon (RoF:Radio over Fiber), Fibre Optical Sensor and radar.
Background technology
" 4G " business is in the world popularized, and makes us formally step into the mobile multimedia epoch.The growth of Mobile data " explosion type " is just impelling mobile communication towards higher rate, the develop rapidly of more jumbo direction.For meeting the power system capacity constantly promoted, mobile communication system operating frequency is just progressively to millimeter wave even more high band expansion.Recently, millimeter wave mobile communication technology formally includes the research range of " 5G " in.
For millimetre-wave attenuator, system adopt millimeter wave quality will directly to determine the performance of whole millimeter-wave communication system.At present, millimeter wave generation technique can be divided into two classes substantially, the millimeter wave generation technique based on conventional electronics and the millimeter wave generation technique based on modern photonic propulsion.Millimeter wave generation technique based on conventional electronics adopts vacuum tube and solid state power source to generate millimeter wave, not only high-frequency element used is expensive but also can run into the electronic bottleneck of bandwidth sum carrier frequency, therefore this technology just progressively substitute by the millimeter wave generation technique based on photonic propulsion.
By contrast, the millimeter wave generation technique based on modern photonic propulsion, owing to mostly adopting optical element, has not only successfully broken away from electronic bottleneck restriction, and has the advantage of electromagnetism interference, lightweight, compact conformation.Meanwhile, the millimeter wave generated based on photonic propulsion method can be compatible natively with fiber optic transmission system, without the need to extra electric light and photoelectric conversion device, makes the range of application of this technology become further wide.
Current, it is photon frequency doubling signal generator based on photonic propulsion frequency doubling technology that this technology is the most directly applied.Photon frequency doubling device utilizes low frequency local vibration source, by external modulator, laser is modulated, direct or indirect generation two can the coherent light sideband of difference frequency, realize generating times over the millimeter wave of local vibration source frequency by opto-electronic conversion, such as, [Jing Li, Tigang Ning, Li Pei, Chunhui Qi, Qian Zhou, XudongHu, and Song Gao, 60GHz millimeter-wave generator based on afrequency-quadrupling feed-forward modulation technique, November1, 2010/Vol.35, No.21/OPTICS LETTERS] in mention a kind of actualizing technology of 4 frequencys multiplication, and mention and utilize I/Q modulator can realize 8 frequency doubling technologies, but and unrealized 8 frequency doubling technologies, Chinese Patent Application No. 201410200255.2 proposes and a kind ofly produces the method and system that quadruple frequency light carries millimeter wave, Chinese Patent Application No. 201320207987.5 proposes a kind of independent incoherent double-laser low phase noise 8 frequency-doubled signal generating apparatus, achieves 8 frequency doubling technologies, Chinese Patent Application No. 201410025712.9 proposes the apparatus and method that utilization Mach-increasing Dare modulator produces octonary millimeter wave, Chinese Patent Application No. 201310142262.7 1 kinds independent incoherent double-laser low phase noise 16 frequency-doubled signal generating apparatus, achieves 16 frequency doubling technologies.
As everyone knows, radio-frequency (RF) local oscillator source utilizes the method for photon frequency doubling acquisition millimeter-wave signal necessary, radio-frequency (RF) local oscillator source frequency more high price is more expensive, required radio-frequency (RF) local oscillator source frequency can be reduced at double by improving system multiplier parameter (such as, 4 frequencys multiplication, 8 frequencys multiplication and 16 frequencys multiplication etc. in such scheme).Thus can significantly reduce the system cost brought in radio-frequency (RF) local oscillator source, and then high degree improves the cost performance of millimeter-wave systems.If the method for photon frequency doubling can be utilized to obtain millimeter-wave signal when not using radio-frequency (RF) local oscillator source, then whole millimeter-wave systems can be made in cost performance and integrated level to produce qualitative leap.But, also do not propose without the need to the photon frequency doubling device scheme in radio-frequency (RF) local oscillator source at present.
This patent proposes a kind of without radio-frequency (RF) local oscillator source photon frequency doubling signal generator scheme, achieve and utilize the method for photon frequency doubling to obtain 3 frequency doubling millimetre wave signals when not using radio-frequency (RF) local oscillator source and filtering device, and produce signal frequency and can regulate continuously.Greatly reduce millimeter-wave systems cost, and provide feasible scheme for following millimeter-wave systems height is integrated.
Utility model content
Technical problem to be solved in the utility model is: conventional photonic frequency-doubled signal generator when without radio-frequency (RF) local oscillator source, cannot generate the problem of millimeter-wave signal.
The technical solution of the utility model is:
A kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering, it is characterized in that this device is without the need to local vibration source, without the need to filtering device, produce signal frequency and can regulate continuously;
Its device comprises: continuous wave laser one, continuous wave laser two, 50:50 fiber coupler, photodetector one, 1 × 2 electric bridge, phase shifter, two parallel Mach increases Dare modulator, upper arm integrated modulator, underarm integrated modulator, core integrated modulator, photodetector two;
Concrete connected mode is: continuous wave laser one and the light output end of continuous wave laser two are connected two light input ends of 50:50 fiber coupler respectively, two light output ends of 50:50 fiber coupler connect the light input end that photodetector one and two parallel Mach increase Dare modulator respectively, the electric output of photodetector one connects the electrical input of 1 × 2 electric bridge, two electric outputs of 1 × 2 electric bridge connect the electrical input of upper arm integrated modulator and phase shifter respectively, phase shifter electricity output connects the electrical input of underarm integrated modulator, two parallel Mach increases the light input end of the light output end connection photodetector two of Dare modulator, due to upper arm integrated modulator, underarm integrated modulator, core integrated modulator, be integrated in the upper arm that two parallel Mach increases Dare modulator respectively, underarm and inside, all belong to the part that two parallel Mach increases Dare modulator, therefore without the need to extra connection,
Device use requirement on devices to be: the characteristic that continuous wave laser one and continuous wave laser two have at least to possess operation wavelength continuously adjustabe and save;
In plant running process, device parameters is: continuous wave laser one is unequal with the operation wavelength of continuous wave laser two, phase shifter provides 180 degree of phase shifts, upper arm integrated modulator and underarm integrated modulator are all offset to maximum transmitted point, and core integrated modulator provides negative to move.
Device generates signal frequency regulative mode: by possessing the operation wavelength of operation wavelength continuously adjustabe joint characteristic laser in adjusting device, the operation wavelength of change continuous wave laser one and continuous wave laser two is poor thus adjusting device generates signal frequency.
The beneficial effects of the utility model are specific as follows:
Described in the utility model a kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering, can the method for photon frequency doubling be utilized to obtain 3 frequency doubling millimetre wave signals when not using radio-frequency (RF) local oscillator source and filtering device, and produce signal frequency and can regulate continuously.Solve conventional photonic frequency-doubled signal generator and when without radio-frequency (RF) local oscillator source, the problem of millimeter-wave signal cannot be generated.Greatly reduce millimeter-wave systems cost, and provide feasible scheme for following millimeter-wave systems height is integrated.
Accompanying drawing explanation
Fig. 1 be a kind of without local oscillator without the adjustable 3 frequency-doubled signal generating means structural representations of filtering.
Embodiment
Below in conjunction with accompanying drawing, one is further described without the adjustable 3 frequency-doubled signal generating meanss of filtering without local oscillator.
Execution mode one:
A kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering, its device comprises as shown in Figure 1: continuous wave laser 1, continuous wave laser 22,50:50 fiber coupler 3, photodetector 1,1 × 2 electric bridge 5, phase shifter 6, two parallel Mach increases Dare modulator 7, upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, photodetector 28;
Concrete connected mode is: continuous wave laser 1 and the light output end of continuous wave laser 22 are connected two light input ends of 50:50 fiber coupler 3 respectively, two light output ends of 50:50 fiber coupler 3 connect the light input end that photodetector 1 and two parallel Mach increase Dare modulator 7 respectively, the electric output of photodetector 1 connects the electrical input of 1 × 2 electric bridge 5, two electric outputs of 1 × 2 electric bridge 5 connect the electrical input of upper arm integrated modulator 71 and phase shifter 6 respectively, the electric output of phase shifter 6 connects the electrical input of underarm integrated modulator 72, two parallel Mach increases the light input end of the light output end connection photodetector 28 of Dare modulator 7, due to upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, be integrated in the upper arm that two parallel Mach increases Dare modulator 7 respectively, underarm and inside, all belong to the part that two parallel Mach increases Dare modulator 7, therefore without the need to extra connection,
Device use requirement on devices to be: the characteristic that continuous wave laser 1 and continuous wave laser 22 have at least to possess operation wavelength continuously adjustabe and save;
In plant running process, device parameters is: continuous wave laser 1 is unequal with the operation wavelength of continuous wave laser 22, phase shifter 6 provides 180 degree of phase shifts, upper arm integrated modulator 71 and underarm integrated modulator 72 are all offset to maximum transmitted point, and core integrated modulator 73 provides negative to move.
Device generates signal frequency regulative mode: by possessing the characteristic laser of operation wavelength continuously adjustabe joint in adjusting device, and the operation wavelength of change continuous wave laser 1 and continuous wave laser 22 is poor thus adjusting device generates signal frequency.
In the present embodiment, the operation wavelength of continuous wave laser 1 is 1550nm, continuous wave laser 2 is operation wavelength continuously adjustabe laser, operation wavelength is 1550.08nm to 1550.12nm consecutive variations, 50:50 fiber coupler 3 is common commercial fiber coupler, detectable complete detection 10GHz to the 15GHz signal of photodetector 1,1 × 2 electric bridge 5 is common commercial microwave line electric bridge, it is that the two parallel Mach of common commercial increases Dare modulator that two parallel Mach increases Dare modulator 7, and photodetector 28 can complete detection 30GHz to 45GHz signal.By adjusting the operation wavelength of continuous wave laser 2, make it at 1550.08nm to 1550.16nm consecutive variations, through 50:50 fiber coupler 3, photodetector 1,1 × 2 electric bridge 5, phase shifter 6, two parallel Mach increases Dare modulator 7, upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, photodetector 28, can generate 30GHz to 45GHz can continually varying millimeter-wave signal.
Execution mode two:
A kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering, its device comprises as shown in Figure 1: continuous wave laser 1, continuous wave laser 22,50:50 fiber coupler 3, photodetector 1,1 × 2 electric bridge 5, phase shifter 6, two parallel Mach increases Dare modulator 7, upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, photodetector 28;
Concrete connected mode is: continuous wave laser 1 and the light output end of continuous wave laser 22 are connected two light input ends of 50:50 fiber coupler 3 respectively, two light output ends of 50:50 fiber coupler 3 connect the light input end that photodetector 1 and two parallel Mach increase Dare modulator 7 respectively, the electric output of photodetector 1 connects the electrical input of 1 × 2 electric bridge 5, two electric outputs of 1 × 2 electric bridge 5 connect the electrical input of upper arm integrated modulator 71 and phase shifter 6 respectively, the electric output of phase shifter 6 connects the electrical input of underarm integrated modulator 72, two parallel Mach increases the light input end of the light output end connection photodetector 28 of Dare modulator 7, due to upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, be integrated in the upper arm that two parallel Mach increases Dare modulator 7 respectively, underarm and inside, all belong to the part that two parallel Mach increases Dare modulator 7, therefore without the need to extra connection,
Device use requirement on devices to be: the characteristic that continuous wave laser 1 and continuous wave laser 22 have at least to possess operation wavelength continuously adjustabe and save;
In plant running process, device parameters is: continuous wave laser 1 is unequal with the operation wavelength of continuous wave laser 22, phase shifter 6 provides 180 degree of phase shifts, upper arm integrated modulator 71 and underarm integrated modulator 72 are all offset to maximum transmitted point, and core integrated modulator 73 provides negative to move.
Device generates signal frequency regulative mode: by possessing the characteristic laser of operation wavelength continuously adjustabe joint in adjusting device, and the operation wavelength of change continuous wave laser 1 and continuous wave laser 22 is poor thus adjusting device generates signal frequency.
In the present embodiment, continuous wave laser 1 is operation wavelength continuously adjustabe laser, operation wavelength is 1550.22nm to 1550.26nm consecutive variations, the operation wavelength of continuous wave laser 2 is 1550.1nm, 50:50 fiber coupler 3 is common commercial fiber coupler, detectable complete detection 15GHz to the 20GHz signal of photodetector 1,1 × 2 electric bridge 5 is common commercial microwave line electric bridge, it is that the two parallel Mach of common commercial increases Dare modulator that two parallel Mach increases Dare modulator 7, and photodetector 28 can complete detection 45GHz to 60GHz signal.By adjusting the operation wavelength of continuous wave laser 1, make it at 1550.22nm to 1550.26nm consecutive variations through 50:50 fiber coupler 3, photodetector 1,1 × 2 electric bridge 5, phase shifter 6, two parallel Mach increases Dare modulator 7, upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, photodetector 28, can generate 45GHz to 60GHz can continually varying millimeter-wave signal.
Execution mode three:
A kind of without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering, its device comprises as shown in Figure 1: continuous wave laser 1, continuous wave laser 22,50:50 fiber coupler 3, photodetector 1,1 × 2 electric bridge 5, phase shifter 6, two parallel Mach increases Dare modulator 7, upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, photodetector 28;
Concrete connected mode is: continuous wave laser 1 and the light output end of continuous wave laser 22 are connected two light input ends of 50:50 fiber coupler 3 respectively, two light output ends of 50:50 fiber coupler 3 connect the light input end that photodetector 1 and two parallel Mach increase Dare modulator 7 respectively, the electric output of photodetector 1 connects the electrical input of 1 × 2 electric bridge 5, two electric outputs of 1 × 2 electric bridge 5 connect the electrical input of upper arm integrated modulator 71 and phase shifter 6 respectively, the electric output of phase shifter 6 connects the electrical input of underarm integrated modulator 72, two parallel Mach increases the light input end of the light output end connection photodetector 28 of Dare modulator 7, due to upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, be integrated in the upper arm that two parallel Mach increases Dare modulator 7 respectively, underarm and inside, all belong to the part that two parallel Mach increases Dare modulator 7, therefore without the need to extra connection,
Device use requirement on devices to be: the characteristic that continuous wave laser 1 and continuous wave laser 22 have at least to possess operation wavelength continuously adjustabe and save;
In plant running process, device parameters is: continuous wave laser 1 is unequal with the operation wavelength of continuous wave laser 22, phase shifter 6 provides 180 degree of phase shifts, upper arm integrated modulator 71 and underarm integrated modulator 72 are all offset to maximum transmitted point, and core integrated modulator 73 provides negative to move.
Device generates signal frequency regulative mode: by possessing the characteristic laser of operation wavelength continuously adjustabe joint in adjusting device, and the operation wavelength of change continuous wave laser 1 and continuous wave laser 22 is poor thus adjusting device generates signal frequency.
In the present embodiment, continuous wave laser 1 and continuous wave laser 2 are operation wavelength continuously adjustabe laser, continuous wave laser 1 operation wavelength is 1550nm to 1550.16nm consecutive variations, continuous wave laser 2 operation wavelength is 1550.16nm to 1550.32nm consecutive variations, 50:50 fiber coupler 3 is common commercial fiber coupler, detectable complete detection 0 to the 40GHz signal of photodetector 1, 1 × 2 electric bridge 5 is common commercial microwave line electric bridge, it is that the two parallel Mach of common commercial increases Dare modulator that two parallel Mach increases Dare modulator 7, photodetector 28 can complete detection 0 to 120GHz signal.By the operation wavelength of adjustment continuous wave laser 1 with continuous wave laser 2, make them respectively at 1550nm to 1550.16nm, 1550.16nm to 1550.32nm consecutive variations through 50:50 fiber coupler 3, photodetector 1,1 × 2 electric bridge 5, phase shifter 6, two parallel Mach increases Dare modulator 7, upper arm integrated modulator 71, underarm integrated modulator 72, core integrated modulator 73, photodetector 28, can generate 0 to 120GHz can continually varying radiofrequency signal.
The above embodiment is only preferred embodiment of the present utility model; be not intended to limit protection range of the present utility model; should be understood that; for those skilled in the art; in content disclosed by the invention; some equivalent variations and replacement can also be made; laser works Wavelength tunable adjusting range is not limited to 1550nm to 1550.32nm, and the adjustment that the scope that can generate millimeter wave is also not limited to these equivalent variations of 0 to 120GHz and replacement and frequency range also should be considered as the protection range of this patent.
Claims (1)
1. without local oscillator without the adjustable 3 frequency-doubled signal generating meanss of filtering, it is characterized in that this device is without the need to local vibration source, without the need to filtering device, produce signal frequency and can regulate continuously;
Its device comprises: continuous wave laser one (1), continuous wave laser two (2), 50:50 fiber coupler (3), photodetector one (4), 1 × 2 electric bridge (5), phase shifter (6), two parallel Mach increases Dare modulator (7), upper arm integrated modulator (71), underarm integrated modulator (72), core integrated modulator (73), photodetector two (8);
Concrete connected mode is: continuous wave laser one (1) and the light output end of continuous wave laser two (2) are connected two light input ends of 50:50 fiber coupler (3) respectively, two light output ends of 50:50 fiber coupler (3) connect the light input end that photodetector one (4) and two parallel Mach increase Dare modulator (7) respectively, the electric output of photodetector one (4) connects the electrical input of 1 × 2 electric bridge (5), two electric outputs of 1 × 2 electric bridge (5) connect the electrical input of upper arm integrated modulator (71) and phase shifter (6) respectively, the electric output of phase shifter (6) connects the electrical input of underarm integrated modulator (72), two parallel Mach increases the light input end of the light output end connection photodetector two (8) of Dare modulator (7), due to upper arm integrated modulator (71), underarm integrated modulator (72), core integrated modulator (73), be integrated in the upper arm that two parallel Mach increases Dare modulator (7) respectively, underarm and inside, all belong to the part that two parallel Mach increases Dare modulator (7), therefore without the need to extra connection,
Device use requirement on devices to be: the characteristic that continuous wave laser one (1) and continuous wave laser two (2) have at least to possess operation wavelength continuously adjustabe and save;
In plant running process, device parameters is: continuous wave laser one (1) is unequal with the operation wavelength of continuous wave laser two (2), phase shifter (6) provides 180 degree of phase shifts, upper arm integrated modulator (71) and underarm integrated modulator (72) are all offset to maximum transmitted point, and core integrated modulator (73) provides negative to move.
Device generates signal frequency regulative mode: by possessing the characteristic laser of operation wavelength continuously adjustabe joint in adjusting device, and the operation wavelength of change continuous wave laser one (1) and continuous wave laser two (2) is poor thus adjusting device generates signal frequency.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105553564A (en) * | 2015-12-14 | 2016-05-04 | 北京交通大学 | Nyquist waveform optical generating device with adjustable duty ratio |
| CN105978630A (en) * | 2016-04-18 | 2016-09-28 | 北京交通大学 | Acousto-optic filter based multi-frequency millimeter wave generator |
| CN106953698A (en) * | 2017-03-08 | 2017-07-14 | 北京交通大学 | A kind of multi-functional millimeter wave, Nyquist waveform, triangular waveform optics generating means |
| CN111224717A (en) * | 2020-01-14 | 2020-06-02 | 中国人民解放军陆军工程大学 | Microwave signal frequency doubling device and method |
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2015
- 2015-03-19 CN CN201520158516.9U patent/CN204408274U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553564A (en) * | 2015-12-14 | 2016-05-04 | 北京交通大学 | Nyquist waveform optical generating device with adjustable duty ratio |
| CN105553564B (en) * | 2015-12-14 | 2017-09-12 | 北京交通大学 | A kind of adjustable Nyquist waveform optics generating means of dutycycle |
| CN105978630A (en) * | 2016-04-18 | 2016-09-28 | 北京交通大学 | Acousto-optic filter based multi-frequency millimeter wave generator |
| CN105978630B (en) * | 2016-04-18 | 2018-04-10 | 北京交通大学 | A kind of multiple frequence millimeter wave generator based on acousto-optic filter |
| CN106953698A (en) * | 2017-03-08 | 2017-07-14 | 北京交通大学 | A kind of multi-functional millimeter wave, Nyquist waveform, triangular waveform optics generating means |
| CN106953698B (en) * | 2017-03-08 | 2019-05-10 | 北京交通大学 | A kind of multi-functional millimeter wave, Nyquist waveform, triangular waveform optics generating device |
| CN111224717A (en) * | 2020-01-14 | 2020-06-02 | 中国人民解放军陆军工程大学 | Microwave signal frequency doubling device and method |
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