CN110277610A - A kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring - Google Patents
A kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring Download PDFInfo
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- CN110277610A CN110277610A CN201910553596.0A CN201910553596A CN110277610A CN 110277610 A CN110277610 A CN 110277610A CN 201910553596 A CN201910553596 A CN 201910553596A CN 110277610 A CN110277610 A CN 110277610A
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- optical fiber
- nonlinear optical
- highly nonlinear
- fiber ring
- phase shifter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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Abstract
The invention belongs to phase shifter technical fields, more particularly to a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring, first continuous-wave laser is connected with signal generator, signal generator is connected with the first Polarization Controller by the first erbium-doped fiber amplifier and the first bandpass filter, second continuous-wave laser passes through the second erbium-doped fiber amplifier, second bandpass filter and attenuator are connected with the second Polarization Controller, first Polarization Controller and the second Polarization Controller are connected with highly nonlinear optical fiber ring by coupler, highly nonlinear optical fiber ring is connected on photoelectric detector by third erbium-doped fiber amplifier and third bandpass filter, photoelectric detector is connected with oscillograph.The present invention solves the problems, such as conventional radio frequency phase shifter, and operationally existing bandwidth restrictions and phase shift tuning range are narrow.Present invention is mainly used in terms of photon phase shift.
Description
Technical field
The invention belongs to phase shifter technical fields, and in particular to a kind of adjustable wide-band light based on highly nonlinear optical fiber ring
Sub- radio-frequency phase shifter.
Background technique
Radio frequency phase shifter is already present in phased array beam and plays increasingly important role, it
It has formed system and has been widely used in smart antenna.But operationally there is bandwidth for radio frequency phase shifter
Limitation and the narrow problem of phase shift tuning range.
Optical system has many advantages, such as that flexible, bandwidth is high, lightweight, controls the photon of phase shift used in research recently
Element causes the common concern of people.It is various in order to realize photon phase shift technology it has been reported that include distributed Feedback in
Wavelength convert laser, stimulated Brillouin scattering signal processing, homodyne mixing and vector sum method.But these methods are in reality
It is influenced during existing phased array by thousands of units, such as the size and complexity of photonic element limit routine
Phase shift.Based on this, realized using highly nonlinear optical fiber ring apparatus phase shift it is necessory to.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of adjustable wide-band photons based on highly nonlinear optical fiber ring to penetrate
Frequency phase shifter solves conventional radio frequency phase shifter operationally existing bandwidth restrictions and phase shift tuning range
Narrow problem.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring, including detectable signal generation module,
Module and phase shift block occur for pump light, it is characterised in that: it includes the first continuous wave laser that module, which occurs, for the detectable signal
Device, first continuous-wave laser are connected with signal generator, and the signal generator passes through the first erbium-doped fiber amplifier
It is connected with the first Polarization Controller with the first bandpass filter, it includes the second continuous-wave laser that module, which occurs, for the pump light,
Second continuous-wave laser is connected with second by the second erbium-doped fiber amplifier, the second bandpass filter and attenuator
Polarization Controller, the phase shift block include coupler and highly nonlinear optical fiber ring, and first Polarization Controller and second is partially
Vibration controller is connected with highly nonlinear optical fiber ring by coupler, and the highly nonlinear optical fiber ring is put by third Er-doped fiber
Big device and third bandpass filter are connected on photoelectric detector, and the photoelectric detector is connected with oscillograph.
The signal generator uses optical carrier suppression technology.
The output work of first erbium-doped fiber amplifier, the second erbium-doped fiber amplifier, third erbium-doped fiber amplifier
It is all 1545-1565nm that rate, which is all 0.5-2W, wave-length coverage,.
First bandpass filter, the second bandpass filter, third bandpass filter wavelength cover be all
1480-1620nm, bandwidth adjustable extent are all 32-650pm.
The insertion loss of the coupler is 3dB.
The highly nonlinear optical fiber length of the highly nonlinear optical fiber ring is 20m, decaying and 15W with 1dB/km- 1km-1Nonlinear factor.
The responsiveness of the photoelectric detector is 0-40GHz.
Compared with prior art, the present invention having the beneficial effect that
The present invention has broadband big, and phase shift range is wide, the advantage that structure is relatively simple, compact, realizes for 40GHz signal
The phase shift tuning range of 0-2 π rad efficiently solves conventional radio frequency phase shifter operationally existing bandwidth
Limitation and the narrow problem of phase shift tuning range.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Wherein: 1a is the first continuous-wave laser, and 1b is the second continuous-wave laser, and 2 be signal generator, 3a the
One erbium-doped fiber amplifier, 3b are the second erbium-doped fiber amplifier, and 3c is third erbium-doped fiber amplifier, and 4a is the first band logical
Filter, 4b are the second bandpass filter, and 4c is third bandpass filter, and 5a is the first Polarization Controller, and 5b is the second polarization
Controller, 6 be attenuator, and 7 be coupler, and 8 be highly nonlinear optical fiber ring, and 9 be photoelectric detector, and 10 be oscillograph.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
A kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring, including detectable signal generation module,
Module and phase shift block occur for pump light.It includes the first continuous-wave laser 1a that module, which occurs, for detectable signal, and the first continuous wave swashs
Light device 1a is connected with signal generator 2, and the first continuous-wave laser 1a generates optical carrier suppression signal, letter through signal generator 2
Number generator 2 is connected with the first Polarization Controller 5a, light by the first erbium-doped fiber amplifier 3a and the first bandpass filter 4a
Carrier suppressed signal is implanted sequentially the first erbium-doped fiber amplifier 3a, the first bandpass filter 4a and the first Polarization Controller 5a
Generate detectable signal.It includes that the second continuous-wave laser 1b, the second continuous-wave laser 1b passes through second that module, which occurs, for pump light
Erbium-doped fiber amplifier 3b, the second bandpass filter 4b and attenuator 6 are connected with the second Polarization Controller 5b, phase shift block packet
Coupler 7 and highly nonlinear optical fiber ring 8 are included, the first Polarization Controller 5a and the second Polarization Controller 5b are connected by coupler 7
There is highly nonlinear optical fiber ring 8.Second continuous-wave laser 1b is as pump light, through the second erbium-doped fiber amplifier 3b, the second band
High non-linearity light is coupled to by coupler 7 with detectable signal after bandpass filter 4b, attenuator 6 and the second Polarization Controller 5b
Fine ring 8.Highly nonlinear optical fiber ring 8 is connected to photoelectricity inspection by third erbium-doped fiber amplifier 3c and third bandpass filter 4c
It surveys on device 9, the output signal of highly nonlinear optical fiber ring 8 is amplified by third erbium-doped fiber amplifier 3c, and detectable signal is by third band
Bandpass filter 4c separation, photoelectric detector 9 are connected with oscillograph 10, detected through photoelectric detector 9, recorded using oscillograph 10
Waveform simultaneously observes phase shift.
Further, signal generator 2 uses optical carrier suppression technology, can produce two with 40GHz frequency spacing
The optics millimeter wave of wavelength.
Further, it is preferred that the first erbium-doped fiber amplifier 3a, the second erbium-doped fiber amplifier 3b, third Er-doped fiber
It is all 1545-1565nm that the output power of amplifier 3c, which is all 0.5-2W, wave-length coverage,.
Further, it is preferred that the wave of the first bandpass filter 4a, the second bandpass filter 4b, third bandpass filter 4c
Long coverage area is all 1480-1620nm, and bandwidth adjustable extent is all 32-650pm, using the big band logical of broadband adjustable extent
Filter can preferably avoid influence of the light beyond filter range to testing result.
Further, it is preferred that the insertion loss of coupler 7 is 3dB.
Further, it is preferred that the highly nonlinear optical fiber length of highly nonlinear optical fiber ring 8 is 20m, with 1dB/km's
Decaying and 15W-1km-1Nonlinear factor, since highly nonlinear optical fiber nonlinear factor is very big, lower pumping function
Rate can realize more apparent phase shift.
Further, it is preferred that the responsiveness of photoelectric detector 9 is 0-40GHz, can more accurately detect different bandwidth
Photon.
The operation principle of the present invention is that:
For highly nonlinear optical fiber ring, linear transfer function can be indicated are as follows:
τ refers to transmission coefficient in formula,Indicate the one-way attenuation in ring, wherein L and α are respectively
The length and linear impairments of ring,It is the linear phase shift of ring, k is to propagate the coefficient of coup.
Total phase shift transmission (the E of output signalout) it is then:
This depends greatly on close one way phase shift resonance.
RF signal can indicate are as follows:
Ein(t)=A-1exp[j(ωs-ωRF)t]+A1exp[j(ωs+ωRF)t]
A in formula-1And A1It is the optical carrier suppression signal of two wavelength amplitudes.ωsAnd ωRFIt is optical carrier suppression signal
Frequency and RF signal frequency.
The RF component that optical carrier suppression signal is detected the output electric current from PD by high-speed photodetector is proportional:
iAC(t)∝2R(A-1A1)COS[2ωRFt]
R is the responsiveness of PD in formula, realizes that quantum phase shifter needs the phase between two wavelength of optical carrier suppression signal
Potential difference.This can be reached by changing the resonance of highly nonlinear optical fiber ring.When pump light is sent in highly nonlinear optical fiber ring, inhale
The energy of receipts is uniformly that luminous energy is converted into thermal energy and leads to nonlinear effect, causes the red shift of resonance wavelength.Due to Gao Fei
Linear optical fiber nonlinear factor is very big, so lower pump power can realize identical phase shift.
Therefore, optical carrier suppression signal be optical treatment with change the factors A of two wavelength '-1exp(jθ-1) and A '1exp
(jθ1), A '±1And θ±1Respectively represent amplitude gain and optical phase shift.The wavelength of optical carrier suppression signal undergoes different phase shifts
Become with the light field of optical carrier suppression signal:
Eout(t)=A-1A1exp[j(ωs-ωRF)t]exp(jθ-1)+A′-1A′1exp[j(ωs+ ωRF)t]exp(jθ1)
After PD detection, RF component is:
i′AC(t)∝2R(A-1A1)(A′-1A′1)COS[2ωRF+(θ-1-θ1)]
With iAC(t) it compares, i 'AC(t) tuning two waves of the optical phase from optical carrier suppression signal are shown
Length has been completely transferred to RF signal.
Only presently preferred embodiments of the present invention is explained in detail above, but the present invention is not limited to above-described embodiment,
Within the knowledge of a person skilled in the art, it can also make without departing from the purpose of the present invention
Various change, various change should all be included in the protection scope of the present invention.
Claims (7)
1. module, pump occur for a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring, including detectable signal
Module and phase shift block occur for Pu light, it is characterised in that: it includes the first continuous-wave laser that module, which occurs, for the detectable signal
(1a), first continuous-wave laser (1a) are connected with signal generator (2), and the signal generator (2) is mixed by first
Doped fiber amplifier (3a) and the first bandpass filter (4a) are connected with the first Polarization Controller (5a), and mould occurs for the pump light
Block includes the second continuous-wave laser (1b), and second continuous-wave laser (1b) passes through the second erbium-doped fiber amplifier
(3b), the second bandpass filter (4b) and attenuator (6) are connected with the second Polarization Controller (5b), and the phase shift block includes coupling
Clutch (7) and highly nonlinear optical fiber ring (8), first Polarization Controller (5a) and the second Polarization Controller (5b) pass through coupling
Device (7) is connected with highly nonlinear optical fiber ring (8), and the highly nonlinear optical fiber ring (8) passes through third erbium-doped fiber amplifier (3c)
It is connected on photoelectric detector (9) with third bandpass filter (4c), the photoelectric detector (9) is connected with oscillograph (10).
2. a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring according to claim 1, special
Sign is: the signal generator (2) uses optical carrier suppression technology.
3. a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring according to claim 1, special
Sign is: first erbium-doped fiber amplifier (3a), the second erbium-doped fiber amplifier (3b), third erbium-doped fiber amplifier
It is all 1545-1565nm that the output power of (3c), which is all 0.5-2W, wave-length coverage,.
4. a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring according to claim 1, special
Sign is: the wavelength covering of first bandpass filter (4a), the second bandpass filter (4b), third bandpass filter (4c)
Range is all 1480-1620nm, and bandwidth adjustable extent is all 32-650pm.
5. a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring according to claim 1, special
Sign is: the insertion loss of the coupler (7) is 3dB.
6. a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring according to claim 1, special
Sign is: the highly nonlinear optical fiber length of the highly nonlinear optical fiber ring (8) is 20m, decaying and 15W with 1dB/km- 1km-1Nonlinear factor.
7. a kind of adjustable wide-band photon radio-frequency phase shifter based on highly nonlinear optical fiber ring according to claim 1, special
Sign is: the responsiveness of the photoelectric detector (9) is 0-40GHz.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555718A (en) * | 2020-03-30 | 2020-08-18 | 太原理工大学 | Ultra-wideband photo-generated millimeter wave noise generator |
| CN111625409A (en) * | 2020-05-15 | 2020-09-04 | 广东浪潮大数据研究有限公司 | Adjustable signal test fixture of bandwidth |
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| WO2015128654A1 (en) * | 2014-02-28 | 2015-09-03 | The University Of Manchester | Tunable waveguide |
| CN104991395A (en) * | 2015-07-06 | 2015-10-21 | 上海交通大学 | Photon radio frequency phase shifter with silicon-based micro disc resonant cavity |
| CN106468834A (en) * | 2016-09-19 | 2017-03-01 | 西安电子科技大学 | Micro-wave light quantum phase shifter based on dual-polarization manipulator |
| CN106972890A (en) * | 2017-03-10 | 2017-07-21 | 电子科技大学 | A kind of light-operated smooth PAM signal reproducing apparatus |
| US20170293083A1 (en) * | 2016-04-11 | 2017-10-12 | Michael Menard | Optical loop enhanced optical modulators |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015128654A1 (en) * | 2014-02-28 | 2015-09-03 | The University Of Manchester | Tunable waveguide |
| CN104991395A (en) * | 2015-07-06 | 2015-10-21 | 上海交通大学 | Photon radio frequency phase shifter with silicon-based micro disc resonant cavity |
| US20170293083A1 (en) * | 2016-04-11 | 2017-10-12 | Michael Menard | Optical loop enhanced optical modulators |
| CN106468834A (en) * | 2016-09-19 | 2017-03-01 | 西安电子科技大学 | Micro-wave light quantum phase shifter based on dual-polarization manipulator |
| CN106972890A (en) * | 2017-03-10 | 2017-07-21 | 电子科技大学 | A kind of light-operated smooth PAM signal reproducing apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555718A (en) * | 2020-03-30 | 2020-08-18 | 太原理工大学 | Ultra-wideband photo-generated millimeter wave noise generator |
| CN111625409A (en) * | 2020-05-15 | 2020-09-04 | 广东浪潮大数据研究有限公司 | Adjustable signal test fixture of bandwidth |
| CN111625409B (en) * | 2020-05-15 | 2023-08-25 | 广东浪潮大数据研究有限公司 | Bandwidth-adjustable signal testing jig |
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Application publication date: 20190924 |