CN107247346B - Light intensity modulator based on optical resonator - Google Patents
Light intensity modulator based on optical resonator Download PDFInfo
- Publication number
- CN107247346B CN107247346B CN201710619071.3A CN201710619071A CN107247346B CN 107247346 B CN107247346 B CN 107247346B CN 201710619071 A CN201710619071 A CN 201710619071A CN 107247346 B CN107247346 B CN 107247346B
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- Prior art keywords
- optical waveguide
- light
- coupler
- optical
- output end
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/035—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect in an optical waveguide structure
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/055—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect the active material being a ceramic
Abstract
The invention discloses a kind of light intensity modulators based on optical resonator, including isolator, the first coupler, the first optical waveguide, the second coupler, the second optical waveguide, piezoelectric ceramic tube, voltage source；First coupler, the first optical waveguide, the second coupler, the second optical waveguide constitute optical resonator, and there are two light output ends for this optical resonator tool；First optical waveguide, the second optical waveguide respectively wind and are fixed on the outer surface of piezoelectric ceramic tube, and the first optical waveguide is not contacted with the second optical waveguide.Effect and benefit of the invention are as follows: introduce optical resonator and piezoelectric ceramic tube, and the optical waveguide of optical resonator winds and be fixed on piezoelectric ceramics tube outer surface, by changing the voltage swing between piezoelectric ceramic tube surfaces externally and internally, modulate the intensity of output light；It is the configuration of the present invention is simple, at low cost, and to input polarization state no requirement (NR).
Description
Technical field
The present invention relates to the technical fields of opto-electronic device, are specifically exactly a kind of luminous intensity tune based on optical resonator
Device processed.
Background technique
The intensity of its modulated output light of light intensity modulator, and change the intensity of its output light according to certain rules, light
Intensity modulator is widely used in fields such as optical communication, optical sensings.Current light intensity modulator according to its principle,
It is broadly divided into acousto-optic, magneto-optic, electrooptic modulator, can get good output light intensity modulation effect, but these modulators must
Corresponding acousto-optic, magneto-optic or electric lighting system, which must be constructed, could modulate output light intensity, such as in magneto-optic light intensity modulator, when
When light passes through magneto-optical crystal (such as yttrium iron garnet), using the rotation of the plane of polarization of magnetic field control linearly polarized light, to adjust line
Polarised light passes through the intensity after analyzer.Therefore, current light intensity modulator usually requires that input light is linearly polarized light, and light
Structure is complicated for intensity modulator, at high cost.
Summary of the invention
Based on the above shortcomings, the present invention provides a kind of light intensity modulator based on optical resonator, it is therefore intended that
Overcoming current light intensity modulator, structure is complicated, needs the problem of input polarization light.
The object of the present invention is achieved like this: a kind of light intensity modulator based on optical resonator, including isolator,
First coupler, the first optical waveguide, the second coupler, the second optical waveguide, piezoelectric ceramic tube and voltage source, the isolation
The light output end of device connects the first light input end of the first coupler, and the first light output end of the first coupler connects the first optics
The light input end of waveguide, the light output end of the first optical waveguide connect the light input end of the second coupler, and the of the second coupler
One light output end connects the light input end of the second optical waveguide, and the light output end of the second optical waveguide connects the of the first coupler
Two light input ends, the first optical waveguide and the second optical waveguide wind and are fixed on the outer surface of piezoelectric ceramic tube, and the first light
It learns waveguide not contact with the second optical waveguide, the voltage signal input of the voltage signal output end connection piezoelectric ceramic tube of voltage source
End；Second light output end of the first coupler is first light output end of this modulator, the second light output end of the second coupler
For second light output end of this modulator；By changing the voltage swing between piezoelectric ceramic tube surfaces externally and internally, output light is modulated
Intensity.
The present invention also has following technical characteristic:
1, first coupler, the first optical waveguide, the second coupler and the second optical waveguide constitute optical resonance
Chamber, and there are two light output ends for this optical resonator tool；
2, the output characteristics of first light output end is different from the output characteristics of the second light output end；
3, the band width of the optical signal of input isolator is necessarily less than the resonance frequency width of optical resonator.
It is wound present invention introduces the optical waveguide of optical resonator and piezoelectric ceramic tube, and optical resonator and is fixed on pressure
Electroceramics tube outer surface modulates the intensity of output light, the present invention by changing the voltage swing between piezoelectric ceramic tube surfaces externally and internally
Structure is simple, and to input polarization state no requirement (NR), by optical resonator, the light in either polarization direction can be in optical resonance
Resonance in chamber, and then can realize light intensity modulation effect of the invention.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention,
Fig. 2 is the schematic diagram that the first and second optical waveguides are wrapped in piezoelectric ceramics tube outer surface.
Specific embodiment
Embodiment 1
Embodiment is described with reference to Fig. 1, a kind of light intensity modulator based on optical resonator, including isolator 1,
One coupler 2, the first optical waveguide 3, the second coupler 4, the second optical waveguide 5, piezoelectric ceramic tube 6 and voltage source 7；
The light output end of isolator 1 connects the first light input end of the first coupler 2, and the first light of the first coupler 2 is defeated
Outlet connects the light input end of the first optical waveguide 3, and the light that the light output end of the first optical waveguide 3 connects the second coupler 4 is defeated
Enter end, the first light output end of the second coupler 4 connects the light input end of the second optical waveguide 5, and the light of the second optical waveguide 5 is defeated
Outlet connects the second light input end of the first coupler 2, and the first optical waveguide 3, the second optical waveguide 5 respectively wind and are fixed on
The outer surface of piezoelectric ceramic tube 6, and the first optical waveguide 3 is not contacted with the second optical waveguide 5, the voltage signal of voltage source 7 is defeated
The voltage signal inputs of outlet connection piezoelectric ceramic tube 6；Second light output end of the first coupler 2 is the first light of the invention
Output end, the second light output end of the second coupler 4 are the second light output end of the invention；
First coupler 2, the first optical waveguide 3, the second coupler 4, the second optical waveguide 5 constitute optical resonance
Chamber, and there are two light output ends for this optical resonator tool；It can make the present invention while export two optical signals, and two light exported
The intensity of signal can be modulated.
The output characteristics of first light output end is different from the output characteristics of the second light output end；When the first light output
When holding the maximum intensity of the optical signal of output, then the intensity of the optical signal of the second light output end output is minimum, and vice versa, this
The intensity modulated waveform of sample, the optical signal of two light output ends output is different, e.g., when the output of the first light output end optical signal it is strong
When to spend modulation waveform be the low wave crest in intermediate high both sides, then during the intensity modulated waveform of the optical signal of the second light output end output is
Between the high trough in low both sides, vice versa, and user can select light output end according to demand；
The band width of the optical signal of input isolator is necessarily less than the resonance frequency width of optical resonator；And when input
When the band width of optical signal is greater than the resonance frequency width of optical resonator, the band width of input optical signal is bigger, this hair
Bright intensity modulated effect is poorer, until failure.
Working principle:
First coupler 2, the first optical waveguide 3, the second coupler 4, the second optical waveguide 5 constitute optical resonator；This
The resonance frequency width of optical resonator is by the coupling ratio of the first coupler 2, coupling ratio, the optical resonator of the second coupler 4
Chamber long codetermine；Resonant state of the input optical signal in optical resonator is grown by the chamber of optical resonator to be determined, resonance
When state difference, output intensity of the input optical signal after optical resonator is also different；
Input optical signal is inputted by the light input end of isolator 1, and isolator 1 has the function of one-way conduction, prevents light anti-
It is emitted back towards the light input end of isolator 1, after input optical signal is exported by isolator 1, enters optical resonator through the first coupler 2,
The output voltage of voltage source 7 is loaded into the surfaces externally and internally of piezoelectric ceramic tube 6, and the variation of 7 output voltage size of voltage source causes to press
The variation of the variation of 6 outer diameter size of electroceramics pipe, 6 outer diameter size of piezoelectric ceramic tube causes the first optical waveguide 3 and the second optics
The long variation of the variation of 5 length of waveguide, i.e. optical resonator chamber；
When the band width of input optical signal is less than the resonance frequency width of optical resonator, optical resonator chamber length
Change changeable resonant state of the input optical signal in optical resonator, when resonant state difference, input optical signal is through optics
Output intensity after resonant cavity is also different, therefore, by change voltage source 7 output voltage size, modulated output light it is strong
Degree；For the first light output end, when input optical signal is in complete resonant state in optical resonator, the first light output end
Output light intensity is minimum, and when input optical signal is gradually distance from complete resonant state in optical resonator, the first light output
End output light intensity is gradually increased；For the second light output end, when input optical signal is in complete resonance in optical resonator
When state, the second light output end output light intensity is maximum, and when input optical signal be gradually distance from optical resonator it is completely humorous
When vibration state, the second light output end output light intensity is gradually reduced.
Claims (2)
1. a kind of light intensity modulator based on optical resonator, including isolator, the first coupler, the first optical waveguide,
Two couplers, the second optical waveguide, piezoelectric ceramic tube and voltage source, it is characterised in that: the light output end of the isolator connects
The first light input end of the first coupler is connect, the first light output end of the first coupler connects the light input of the first optical waveguide
End, the light output end of the first optical waveguide connect the light input end of the second coupler, and the first light output end of the second coupler connects
The light input end of the second optical waveguide is connect, the light output end of the second optical waveguide connects the second light input end of the first coupler,
First optical waveguide and the second optical waveguide wind and are fixed on the outer surface of piezoelectric ceramic tube, and the first optical waveguide and second
Optical waveguide does not contact, the voltage signal inputs of the voltage signal output end connection piezoelectric ceramic tube of voltage source；First coupling
Second light output end of device is first light output end of this modulator, and the second light output end of the second coupler is this modulator
Second light output end；By changing the voltage swing between piezoelectric ceramic tube surfaces externally and internally, the intensity of output light is modulated；Described
One coupler, the first optical waveguide, the second coupler and the second optical waveguide constitute optical resonator, and this optical resonator has
There are two light output ends；The band width of the optical signal of input isolator is necessarily less than the resonance frequency width of optical resonator.
2. a kind of light intensity modulator based on optical resonator according to claim 1, it is characterised in that: described
The output characteristics of one light output end is different from the output characteristics of the second light output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710619071.3A CN107247346B (en) | 2017-07-26 | 2017-07-26 | Light intensity modulator based on optical resonator |
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| CN201710619071.3A CN107247346B (en) | 2017-07-26 | 2017-07-26 | Light intensity modulator based on optical resonator |
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| CN107247346B true CN107247346B (en) | 2019-05-21 |
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| CN201710619071.3A Expired - Fee Related CN107247346B (en) | 2017-07-26 | 2017-07-26 | Light intensity modulator based on optical resonator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108508594A (en) * | 2018-06-08 | 2018-09-07 | 中国人民解放军国防科技大学 | High resonant frequency optical fiber phase modulator based on piezoelectric ceramics |
| CN110095842B (en) * | 2019-04-18 | 2020-06-30 | 东北林业大学 | Full light intensity modulator based on double ring-shaped resonant cavity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101484849A (en) * | 2006-06-30 | 2009-07-15 | 卢森特技术有限公司 | Optical modulator |
| CN103983210A (en) * | 2014-05-22 | 2014-08-13 | 天津大学 | Method for measuring phase stability of three-dimensional shape measurement optical fiber interference projected fringe |
| CN104777556A (en) * | 2015-04-29 | 2015-07-15 | 中国科学院半导体研究所 | Piezoelectric ceramic photoelectric link microwave signal true time delay control device |
| CN105323007A (en) * | 2015-11-06 | 2016-02-10 | 东北林业大学 | Dispersion compensation device based on optical fibre ring resonant cavity |
| CN106595901A (en) * | 2016-12-21 | 2017-04-26 | 东北林业大学 | High-sensitivity temperature sensor based on composite micro-nanofiber resonant cavity |
-
2017
- 2017-07-26 CN CN201710619071.3A patent/CN107247346B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101484849A (en) * | 2006-06-30 | 2009-07-15 | 卢森特技术有限公司 | Optical modulator |
| CN103983210A (en) * | 2014-05-22 | 2014-08-13 | 天津大学 | Method for measuring phase stability of three-dimensional shape measurement optical fiber interference projected fringe |
| CN104777556A (en) * | 2015-04-29 | 2015-07-15 | 中国科学院半导体研究所 | Piezoelectric ceramic photoelectric link microwave signal true time delay control device |
| CN105323007A (en) * | 2015-11-06 | 2016-02-10 | 东北林业大学 | Dispersion compensation device based on optical fibre ring resonant cavity |
| CN106595901A (en) * | 2016-12-21 | 2017-04-26 | 东北林业大学 | High-sensitivity temperature sensor based on composite micro-nanofiber resonant cavity |
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| CN107247346A (en) | 2017-10-13 |
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Effective date of registration: 20200611 Address after: 636000 room 2, floor 2, unit 1, building 4, No. 14, Hongxing Road, nuojiang Town, Tongjiang County, Bazhong City, Sichuan Province Patentee after: Wang Yajun Address before: 150000 room 307, science building, Northeast Forestry University, 26 Xing Xing Road, Xiangfang District, Heilongjiang, Harbin Patentee before: NORTHEAST FORESTRY University |
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Effective date of registration: 20201026 Address after: 318000 Guanlu Town Industrial Zone, Xianju County, Taizhou City, Zhejiang Province Patentee after: Taizhou yasteli lamp Co.,Ltd. Address before: 636000 room 2, floor 2, unit 1, building 4, No. 14, Hongxing Road, nuojiang Town, Tongjiang County, Bazhong City, Sichuan Province Patentee before: Wang Yajun |
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