CN209373317U - A kind of independent double-colored photoswitch in space - Google Patents
A kind of independent double-colored photoswitch in space Download PDFInfo
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- CN209373317U CN209373317U CN201920285210.8U CN201920285210U CN209373317U CN 209373317 U CN209373317 U CN 209373317U CN 201920285210 U CN201920285210 U CN 201920285210U CN 209373317 U CN209373317 U CN 209373317U
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Abstract
A kind of independent double-colored photoswitch in space, includes two pieces of concatenated photorefractive crystals, is connected to DC power supply in series loop；The optical axis c and power supply E of two pieces of photorefractive crystals connect according to right-handed helix rule；The upper and lower surface of two pieces of photorefractive crystals is coated with electrode, front surface difference incidence 488nm bias light and signal light, 532nm bias light and signal light；The independent 488nm laser in space and 532nm laser are generated by two corresponding lasers respectively；According to right-handed helix rule two pieces of photorefractive crystals of series connection and DC power supply, the main structure of double-colored photoswitch is formed, wherein DC power supply E is located among two pieces of photorefractive crystals, connects by conducting wire；Build the optical path of 488nm blue laser；Build the optical path of 532nm green laser；The size for adjusting DC power supply E, can be achieved at the same time the control to transmission signal light 488nm blue laser and 532nm green laser largest light intensity, application prospect is good.
Description
Technical field
The invention belongs to photoswitch control technology fields, and in particular to a kind of independent double-colored photoswitch in space.
Background technique
Photoswitch presses the difference of its control mechanism, can be divided into electric control optical switch and optically controlled optical switch.Electric control optical switch packet
Include thermo-optic effect photoswitch, micro electro mechanical photoswitch, chiral liquid crystals photoswitch, magneto-optic effect photoswitch, acoustooptical effect photoswitch
With electrooptic effect photoswitch.Wherein, the photoswitch based on electrooptic effect is mainly based upon linear electro-optic effect and secondary electric light effect
It answers, is excellent electric control optical switch since its is low in energy consumption, speed is fast, the service life is long.Currently, the existing light based on electrooptic effect
Mostly switch is using blue or green laser as incoming signal light；And in fields such as optic communications, it is sometimes desirable to control simultaneously
The signal light of different-waveband, prior art majority are the sizes by changing voltage, control the power of monochrome signal light, this skill
Art cannot be used for the signal light of control different-waveband.The prior art is the signal by different electrical voltage system control different-wavebands
Light, the disadvantages of switch synchronism is poor, control is not flexible, system complex is caused in this way, limits application range.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of independent double-colored photoswitch in space,
It is realized by changing the size of DC voltage to bluish-green double-colored signal light by the independent series connection photorefractive crystal circuit in space
While control；Have the characteristics that control is flexible, response is fast, required optical power is lower.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of independent double-colored photoswitch in space includes concatenated two pieces of photorefractive crystals, is connected in series loop
DC power supply E；It is coated with electrode in the upper and lower surface of two pieces of photorefractive crystals, the front surface of two pieces of photorefractive crystals is incident respectively
The signal light and bias light of the signal light and bias light of 488nm, 532nm；Two pieces of photorefractive crystals are respectively that left side Preset grating is brilliant
Body, right side photorefractive crystal；By change external dc power supply size can control simultaneously transmission 488nm blue laser and
The largest light intensity of 532nm green laser realizes the function of double-colored photoswitch.
The optical axis c and external dc power supply E of two pieces of photorefractive crystals are concatenated according to right-handed helix rule.
The signal light and bias light that left side photorefractive crystal incidence is 488nm, signal light are the e polarised lights of arrow beam of light,
Bias light is the o polarised light of broadened beam, and the two is derived from same laser light source.
Right side photorefractive crystal incidence is the signal light and bias light of 532nm；Signal light is the e polarised light of arrow beam of light；Back
Scape light is the o polarised light of broadened beam, and the two is derived from same laser light source.
The light path system of the 488nm signal light and bias light and the light path system knot of 532nm signal light and bias light
Structure is identical.
488nm and 532nm laser is generated by different laser light sources respectively, and is decomposed using two sets of identical light path systems
For signal light and bias light.
Compared with prior art, the beneficial effects of the present invention are:
In the method, main device includes two pieces of photorefractive crystal SBN, the laser light source, defeated that output wavelength is 488nm
Wavelength is 532nm out laser light source, the specific light path system for by 488nm and 532nm laser induced breakdown being signal light and bias light,
The current source and corresponding electrode plate of DC voltage are provided.
The present invention utilizes the photorefractive effect of photorefractive crystal, in independence series loop in space as described above, outside
Added electric field is in 104~105When V/m range, if control extra electric field gradually increases, 488nm blue signal light and 532nm green
Signal light forms the independent soliton in space in left and right side photorefractive crystal respectively, in this course, pair of transmission
The largest light intensity of chrominance signal light changes with the variation of extra electric field, obtains the effect of double-colored photoswitch.
The present invention realizes a kind of bi-coloured light open relation of electric control using the photorefractive effect in photorefractive crystal SBN
System.The photoswitch can control the power of 488nm blue signal light and 532nm green light simultaneously, realize bi-coloured light and open
The function of pass, two paths of signals light be spatially it is independent, this optical switching technique has good in space optical communication field
Application prospect.
Detailed description of the invention
Fig. 1 is the basic block diagram of the double-colored photoswitch of the present invention.
Fig. 2 is the optical path configuration diagram of incident laser needed for the present invention.
Specific embodiment
Xia Mianjiehefutuduibenfamingjiegouyuanlihegongzuoyuanlizuojinyibuxiangxishuoming.
Referring to Fig. 1, a kind of independent double-colored photoswitch in space, which is characterized in that include concatenated two pieces of Preset grating crystalline substances
Body is connected with DC power supply E in series loop；Electrode, two pieces of Preset gratings are coated in the upper and lower surface of two pieces of photorefractive crystals
The signal light of the front surface difference incidence 488nm of crystal and the signal light and bias light of bias light, 532nm；Two pieces of Preset grating crystalline substances
Body is respectively left side photorefractive crystal 16, right side photorefractive crystal 17；Size by changing external dc power supply can be simultaneously
The 488nm blue laser of transmission and the largest light intensity of 532nm green laser are controlled, realizes the function of double-colored photoswitch.
The optical axis c and external dc power supply E of two pieces of photorefractive crystals are concatenated according to right-handed helix rule.
The signal light and bias light that left side photorefractive crystal incidence is 488nm, signal light are the e polarised lights of arrow beam of light,
Bias light is the o polarised light of broadened beam, and the two is derived from same laser light source.
Right side photorefractive crystal incidence is the signal light and bias light of 532nm；Signal light is the e polarised light of arrow beam of light；Back
Scape light is the o polarised light of broadened beam, and the two is derived from same laser light source.
488nm blue laser and 532nm green laser use two sets of identical light path systems to be broken down into two parts respectively
That is signal light and bias light.
Working principle of the present invention is as follows:
In the circuit that two pieces of photorefractive crystal SBN and DC power supply are connected in series, the front surface of photorefractive crystal is simultaneously
The o polarization bias light of incident homogeneously broadening and the arrow beam of light signal light of e polarization.The effect of homogeneous background light is similar to dark radiation,
It can accelerate the formation of soliton, the signal light and extra electric field of e polarization result in the non-of refractive index in photorefractive media jointly
It is uniformly distributed, the variations in refractive index of non-uniform Distribution counteracts the natural diffraction effect of light beam, and final signal light forms Preset grating
Bright spatial soliton.By controlling the size of applied voltage, it can control the forming process of soliton, that is, control transmission signal light
Largest light intensity.
The control principle of the independent double-colored photoswitch in space:
Step 1, according to right-handed helix rule two pieces of photorefractive crystals of series connection and DC power supply, the master of double-colored photoswitch is formed
Body structure, wherein DC power supply is located among two pieces of photorefractive crystals, and three is connected by conducting wire.
Step 2, the optical path of 488nm blue laser is built；From left to right successively are as follows: the 488nm blue issued from laser
Laser is divided into e light beam and o light beam two parts by half-wave plate 1 and polarization splitting prism 1；Wherein e is polarized
The focusing system that light beam is formed by lens 1 and lens 25, becomes the signal light of arrow beam of light, then passes through polarization spectro rib
Mirror 2 11 is ultimately incident upon the front surface of left side photorefractive crystal；Wherein o light beam passes through total reflective mirror 1, enters lens
36 and lens 47 form beam-expanding system, become the bias light of broadening, then pass sequentially through total reflective mirror 29 and half-wave plate two
10, into polarization splitting prism 2 11, it is ultimately incident upon the front surface of left side photorefractive crystal；
Referring to fig. 2, step 3, the optical path of 532nm green laser is built.From left to right successively are as follows: issued from laser 12
532nm green laser is divided into e light beam and o light beam two parts by half-wave plate 1 and polarization splitting prism 1；
The wherein focusing system that e light beam is formed by lens 1 and lens 25, becomes the signal light of arrow beam of light, then passes through
Polarization splitting prism 2 11 is ultimately incident upon the front surface of right side photorefractive crystal；Wherein o light beam passes through total reflective mirror 1,
The beam-expanding system that lens 36 and lens 47 form is entered, becomes the bias light of broadening, then passes sequentially through 29 He of total reflective mirror
Half-wave plate 2 10 is ultimately incident upon the front surface of right side photorefractive crystal into polarization splitting prism 2 11.
Wherein, 488nm bias light 1 and 532nm bias light 3 are broadened beam, 488nm signal light 2 and 532nm signal light 4
Size for arrow beam of light, arrow beam of light is aboutIt arrivesBetween, the size of broadened beam is about 2mm；Signal light and back
Scape light, which overlaps, is incident on the front surface of photorefractive crystal；
Step 4, the size for adjusting extra electric field can be achieved at the same time green to transmission signal light 488nm blue laser and 532nm
The control of color laser largest light intensity, that is, bi-coloured light switch control.
Fig. 1 is the main structure chart of double-colored photoswitch.Two pieces of photorefractive crystals are distributed in the two sides of DC power supply, and three presses
Circuit is connected into according to right-handed helix rule, and the surface of conducting wire and photorefractive crystal links together by electrode.Left side Preset grating
Incidence 488nm signal light and bias light, the front surface of right side photorefractive crystal 17 are incident simultaneously simultaneously for the front surface of crystal 16
The signal light and bias light of 532nm.The light path system of 488nm signal light and bias light as shown in Figure 2 generates, 532nm signal light
It is generated with the light path system of bias light also as shown in Figure 2, generates blue signal light and bias light, green light and background here
The light path system of light is the light path system of two sets of same configurations.By controlling the size of DC electric field, transmission can be controlled simultaneously
The largest light intensity of double-colored signal light continuously change, wherein 488nm blue signal light can between 1 ~ 33% consecutive variations,
532nm green light can between 1 ~ 30% consecutive variations.
Fig. 2 is the optical path configuration diagram for generating signal light and bias light.A branch of laser issued by laser, by Fig. 2's
Optical path configuration can be broken down into the e polarised light of arrow beam of light and the o polarised light of broadened beam, and finally by signal light and bias light
It overlaps.
Claims (5)
1. a kind of independent double-colored photoswitch in space, which is characterized in that include concatenated two pieces of photorefractive crystals, series loop
In be connected with DC power supply E；Electrode, the front surface of two pieces of photorefractive crystals are coated in the upper and lower surface of two pieces of photorefractive crystals
The signal light and bias light of the signal light of incidence 488nm and bias light, 532nm respectively；Two pieces of photorefractive crystals are respectively left side
Photorefractive crystal, right side photorefractive crystal；The 488nm that size by changing external dc power supply can control transmission simultaneously is blue
The largest light intensity of color laser and 532nm green laser realizes the function of double-colored photoswitch.
2. the independent double-colored photoswitch in a kind of space according to claim 1, which is characterized in that two pieces of Preset gratings
The optical axis c and external dc power supply E of crystal are concatenated according to right-handed helix rule.
3. the independent double-colored photoswitch in a kind of space according to claim 1, which is characterized in that the left side Preset grating
The signal light and bias light that crystal incidence is 488nm, signal light are the e polarised lights of arrow beam of light, and bias light is the o of broadened beam
Polarised light, the two are derived from same laser light source.
4. the independent double-colored photoswitch in a kind of space according to claim 1, which is characterized in that the right side Preset grating
Crystal incidence is the signal light and bias light of 532nm；Signal light is the e polarised light of arrow beam of light；Bias light is that the o of broadened beam is inclined
Shake light, and the two is derived from same laser light source.
5. the independent double-colored photoswitch in a kind of space according to claim 1, which is characterized in that the 488nm signal
The light path system of light and bias light is identical as the light path system structure of 532nm signal light and bias light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285210.8U CN209373317U (en) | 2019-03-07 | 2019-03-07 | A kind of independent double-colored photoswitch in space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285210.8U CN209373317U (en) | 2019-03-07 | 2019-03-07 | A kind of independent double-colored photoswitch in space |
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| Publication Number | Publication Date |
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| CN209373317U true CN209373317U (en) | 2019-09-10 |
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| CN201920285210.8U Expired - Fee Related CN209373317U (en) | 2019-03-07 | 2019-03-07 | A kind of independent double-colored photoswitch in space |
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- 2019-03-07 CN CN201920285210.8U patent/CN209373317U/en not_active Expired - Fee Related
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Granted publication date: 20190910 Termination date: 20210307 |