CN105323007B - Dispersion compensation device based on fiber annular resonant cavity - Google Patents
Dispersion compensation device based on fiber annular resonant cavity Download PDFInfo
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- CN105323007B CN105323007B CN201510766856.4A CN201510766856A CN105323007B CN 105323007 B CN105323007 B CN 105323007B CN 201510766856 A CN201510766856 A CN 201510766856A CN 105323007 B CN105323007 B CN 105323007B
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Abstract
A kind of dispersion compensation device based on fiber annular resonant cavity, including fibre optic isolater, the first fiber coupler, fiber grating, the second fiber coupler, fiber optic loop and the 3rd fiber coupler；Optical signal input is the light input end of fibre optic isolater, the light output end of fibre optic isolater is connected with the light input end of the first fiber coupler, the light input/output port of first fiber coupler is connected with fiber grating, the light output end of first fiber coupler is connected with the light input end of the second fiber coupler, first light input/output port of the second fiber coupler and the first light input/output port of the 3rd fiber coupler, second light input/output port of the second fiber coupler and the second light input/output port of the 3rd fiber coupler are connected by fiber optic loop, the light output end of 3rd fiber coupler is light signal output end.The present invention compares compared with dispersion compensation device, has the advantages of simple in construction, loss is small, dispersion compensation ability is strong.
Description
Technical field
The present invention relates to technical field of photo communication, and in particular to a kind of dispersion compensation dress based on fiber annular resonant cavity
Put.
Background technology
In optical transmission process, optical signal has certain spectrum width, comprising many different wavelength components, and it is common single
The group velocity of different wave length composition is different in mode fiber, and with the increase of transmission range, different wave length composition is drifted apart from,
Cause transmission signal wave distortion, pulse stretching, the dispersion phenomenon of this light greatly limit transmission capacity and the transmission of optical fiber
Bandwidth.Dispersion compensation device is to make up the wave distortion caused by dispersion, and then lifting system transmission capacity and transmission belt
Wide device, but existing dispersion compensation device is complicated, loss is big, dispersion compensation effect is poor, it is difficult to meet Large Copacity, height
The demand of bandwidth optical transmission system.
The content of the invention
Based on above weak point, the present invention provides a kind of dispersion compensation device based on fiber annular resonant cavity, is used for
Solve that existing dispersion compensation device is complicated, loss is big, dispersion compensation effect is poor, it is difficult to meet that Large Copacity, high bandwidth light pass
The problem of demand of defeated system.
The technology used in the present invention is as follows：
A kind of dispersion compensation device based on fiber annular resonant cavity, including fibre optic isolater, the first fiber coupler, light
Fine grating, the second fiber coupler, fiber optic loop and the 3rd fiber coupler；Optical signal input inputs for the light of fibre optic isolater
End, the light output end of fibre optic isolater are connected with the light input end of the first fiber coupler, the light input of the first fiber coupler
Output end is connected with fiber grating, and the light output end of the first fiber coupler is connected with the light input end of the second fiber coupler,
First light input/output port of the second fiber coupler and the first light input/output port of the 3rd fiber coupler, the second optical fiber coupling
Second light input/output port of clutch and the second light input/output port of the 3rd fiber coupler are connected by fiber optic loop, and the 3rd
The light output end of fiber coupler is light signal output end.
The present invention also has following technical characteristic：
1st, described fiber optic loop is by the air core coil of single-mode fiber coiling, and fiber optic loop total length is 0.5 meter.
2nd, the first described fiber coupler coupling ratio is 50: 50, and the second fiber coupler coupling ratio is 5: 95, the 3rd light
Fine coupler coupling ratio is 5: 95.
3rd, the reflection center wavelength of light of described fiber grating is 1550nm.
4th, the second described fiber coupler, fiber optic loop and the 3rd fiber coupler form fiber annular resonant cavity, this light
One resonance wavelength of fine ring resonator is 1550nm, identical with the reflection center wavelength of light of fiber grating.
5th, the described fiber grating and total length of fiber optic loop, the coupling ratio of the second fiber coupler and the 3rd optical fiber coupling
The coupling ratio of clutch together decides on dispersion compensation effect.
The features and advantages of the invention：
The present invention overcomes that existing dispersion compensation device is complicated, loss is big, dispersion compensation effect is poor, it is difficult to meets great Rong
The problems such as amount, high bandwidth optical transmission system demand, compared compared with dispersion compensation device, there is simple in construction, the small, dispersion of loss
The advantages of compensation ability is strong.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Illustrate and further illustrate below according to Figure of description：
Embodiment 1
As shown in Figure 1, a kind of dispersion compensation device based on fiber annular resonant cavity, including fibre optic isolater 1, first
Fiber coupler 2, fiber grating 3, the second fiber coupler 4, the fiber coupler 6 of fiber optic loop 5 and the 3rd；Optical signal input is
The light input end of fibre optic isolater 1, the light output end of fibre optic isolater 1 are connected with the light input end of the first fiber coupler 2, the
The light input/output port of one fiber coupler 2 is connected with fiber grating 3, the light output end and the second light of the first fiber coupler 2
The light input end connection of fine coupler 4, the first light input/output port of the second fiber coupler 4 and the 3rd fiber coupler 6
Second light of the first light input/output port, the second light input/output port of the second fiber coupler 4 and the 3rd fiber coupler 6 is defeated
Enter output end to connect by fiber optic loop 5, the light output end of the 3rd fiber coupler 6 is light signal output end.
Fiber optic loop 5 is by the air core coil of single-mode fiber coiling, and the total length of fiber optic loop 5 is 0.5 meter；First fiber coupler
2 coupling ratios are 50: 50, and the coupling ratio of the second fiber coupler 4 is 5: 95, and the coupling ratio of the 3rd fiber coupler 6 is 5: 95；Optical fiber light
The reflection center wavelength of light of grid 3 is 1550nm；Second fiber coupler 4, the fiber coupler 6 of fiber optic loop 5 and the 3rd form optical fiber
Ring resonator, a resonance wavelength of this fiber annular resonant cavity are 1550nm, the reflection center wavelength of light with fiber grating 3
It is identical；The fiber grating 3 and total length of fiber optic loop 5, the coupling ratio of the second fiber coupler 4 and the 3rd fiber coupler 6
Coupling ratio together decides on dispersion compensation effect.
Embodiment 2
The present invention operation principle be：Optical signals optical signal input enters fibre optic isolater 1, by the first optical fiber coupling
Clutch 2 enters fiber grating 3, and optical signal is selected in fiber grating 3, and the light that centre wavelength is 1550nm is reflected into first
Fiber coupler 2, then enter fiber optic loop 5, the second fiber coupler 4, fiber optic loop 5, the 3rd optical fiber through the second fiber coupler 4
Coupler 6 forms fiber annular resonant cavity, and a resonance wavelength of this fiber annular resonant cavity is 1550nm, therefore can be
Strong dispersion is produced at 1550nm, realizes dispersion compensation, meanwhile, after this dispersion compensation process, the dispersion compensation of optical signal
Effect depends primarily on the total length of fiber grating 3 and fiber optic loop 5, the coupling ratio of the second fiber coupler 4, the 3rd fiber coupling
The coupling ratio of device 6, the optical signal of dispersion compensation is completed through the 3rd fiber coupler 6, is exported by light signal output end.
Claims (1)
1. a kind of dispersion compensation device based on fiber annular resonant cavity, including fibre optic isolater (1), the first fiber coupler
(2), fiber grating (3), the second fiber coupler (4), fiber optic loop (5) and the 3rd fiber coupler (6)；Optical signal input is
The light input end of fibre optic isolater (1), it is characterised in that：The light output end and the first fiber coupler (2) of fibre optic isolater (1)
Light input end connection, the light input/output port of the first fiber coupler (2) is connected with fiber grating (3), the first fiber coupling
The light output end of device (2) is connected with the light input end of the second fiber coupler (4), and the first light of the second fiber coupler (4) is defeated
The the second light input for entering the first light input/output port, the second fiber coupler (4) of output end and the 3rd fiber coupler (6) is defeated
The second light input/output port for going out end and the 3rd fiber coupler (6) is connected by fiber optic loop (5), the 3rd fiber coupler
(6) light output end is light signal output end；The fiber optic loop (5) is by the air core coil of single-mode fiber coiling, fiber optic loop (5)
Total length is 0.5 meter；First fiber coupler (2) coupling ratio is 50: 50, the second fiber coupler (4) coupling ratio
For 5: 95, the 3rd fiber coupler (6) coupling ratio is 5: 95；The reflection center wavelength of light of the fiber grating (3) is
1550nm；Second fiber coupler (4), fiber optic loop (5) and the 3rd fiber coupler (6) form fiber annular resonant cavity,
One resonance wavelength of the fiber annular resonant cavity is 1550nm, identical with the reflection center wavelength of light of fiber grating (3)；It is described
Fiber grating (3) and the total length of fiber optic loop (5), the coupling ratio of the second fiber coupler (4) and the 3rd fiber coupler (6)
Coupling ratio together decide on dispersion compensation effect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766856.4A CN105323007B (en) | 2015-11-06 | 2015-11-06 | Dispersion compensation device based on fiber annular resonant cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766856.4A CN105323007B (en) | 2015-11-06 | 2015-11-06 | Dispersion compensation device based on fiber annular resonant cavity |
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| CN105323007A CN105323007A (en) | 2016-02-10 |
| CN105323007B true CN105323007B (en) | 2017-11-21 |
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| CN201510766856.4A Expired - Fee Related CN105323007B (en) | 2015-11-06 | 2015-11-06 | Dispersion compensation device based on fiber annular resonant cavity |
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| CN107247346B (en) * | 2017-07-26 | 2019-05-21 | 东北林业大学 | Light intensity modulator based on optical resonator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280408A (en) * | 1999-07-12 | 2001-01-17 | 中国科学院西安光学精密机械研究所 | Circular cavity optic fibre laser |
| CN2617087Y (en) * | 2003-05-30 | 2004-05-19 | 华为技术有限公司 | Bidirectional optical fiber link dispension compensating device |
| CN102062902A (en) * | 2010-12-24 | 2011-05-18 | 华南师范大学 | Mach-Zehnder interferometer based tunable flat-top multi-channel optical fiber filter |
-
2015
- 2015-11-06 CN CN201510766856.4A patent/CN105323007B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280408A (en) * | 1999-07-12 | 2001-01-17 | 中国科学院西安光学精密机械研究所 | Circular cavity optic fibre laser |
| CN2617087Y (en) * | 2003-05-30 | 2004-05-19 | 华为技术有限公司 | Bidirectional optical fiber link dispension compensating device |
| CN102062902A (en) * | 2010-12-24 | 2011-05-18 | 华南师范大学 | Mach-Zehnder interferometer based tunable flat-top multi-channel optical fiber filter |
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