CN201576144U - Adjustable dispersion compensation device - Google Patents
Adjustable dispersion compensation device Download PDFInfo
- Publication number
- CN201576144U CN201576144U CN2009201346209U CN200920134620U CN201576144U CN 201576144 U CN201576144 U CN 201576144U CN 2009201346209 U CN2009201346209 U CN 2009201346209U CN 200920134620 U CN200920134620 U CN 200920134620U CN 201576144 U CN201576144 U CN 201576144U
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- Prior art keywords
- interference cavity
- dispersion compensation
- compensation device
- heating
- color dispersion
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Abstract
The utility model provides an adjustable dispersion compensation device. An interference cavity is provided with a heating unit. The heating unit is used for heating the interference cavity to change the refractive index of the interference cavity. Based on different conditions, the adjustable dispersion compensation device can control and change the dispersion compensation quantity required by various signals by changing a temperature of the interference cavity. The adjustable dispersion compensation device not only can flexibly adjust the required dispersion compensation quantity, but also has convenient assembly and reduces the cost.
Description
Technical field
The utility model relates to a kind of color dispersion compensation device, and is particularly a kind of by adjusting the color dispersion compensation device that temperature is controlled.
Background technology
Optical fiber communication technology under the ever-increasing situation of bandwidth demand, develop piece more and more, at a high speed, jumbo multiple information transmits in same optical fiber by the light of different wave length separately.Each light that carries information all has its different wavelength separately, all light mixes the composition light signal and transmits in optical fiber, the light of different wave length is according to its different separately speed transmission, the light that the light transmission speed that wavelength is big is lacked greater than wavelength, when transmission range is longer, this velocity contrast can cause the chromatic dispersion of light signal, and signal pulse may also can be overlapping, optical receiver also can be difficult to judge the end points of pulse like this, can influence the complete of signal like this, optical receiver will produce wrong judgement.
The common practices of prior art is to use fiber grating to compensate the chromatic dispersion that is produced, and according to the light at diverse location reflection different wave length, makes the different light after the reflection produce optical path difference, thus the chromatic dispersion that comes the long Distance Transmission of compensated optical signal to be produced.
Yet come compensation of dispersion to compensate with fiber grating, and the manufacturing expense of fiber grating is also relatively more expensive at certain wavelengths and specific dispersion values.
Summary of the invention
The purpose of this utility model be to propose a kind of can be under the different situations, control and change the needed chromatic dispersion compensation quantity of various light signals by the temperature that changes interference cavity.
To achieve these goals, the utility model provides a kind of color dispersion compensation device, comprises a collimating apparatus and an interference cavity, and this collimating apparatus comprises two fiber stubs and lens, and this pair fiber stub and this lens are oppositely arranged; Be connected with an interference cavity in this collimating apparatus, it is characterized in that: this interference cavity is provided with a heating unit, and this heating unit is used for to the interference cavity heating, to change the refractive index of interference cavity.
Wherein, preferred version is: this interference cavity is the silicon material.
Wherein, preferred version is: this heating unit is made up of thermistor and heating resistor.This heating unit is made up of a sensible heat circle and a heating collar, and thermistor and heating resistor are formed, and heating resistor is in the outer ring, and thermistor is at inner ring.
Wherein, preferred version is: this heating unit is made up of the heat sensing layer that stacks gradually, insulation course and zone of heating, and wherein heat sensing layer is connected in this interference cavity.This interference cavity has one first reflecting surface and one second reflecting surface, is coated with reflectance coating respectively on these two reflectings surface, and wherein, the plated film on first reflecting surface of this interference cavity is the partial reflection film, and the plated film on second reflecting surface of this interference cavity is a total reflection film
Owing to adopted above-mentioned color dispersion compensation device, not only can adjust needed chromatic dispersion compensation quantity neatly, and also easy to assembly, also reduced cost.
Description of drawings
Engaging accompanying drawing below further specifies embodiments of the invention:
Fig. 1 is the three-dimensional structure diagram of color dispersion compensation device.
Fig. 2 is the sectional view of color dispersion compensation device.
Fig. 3 is the structural representation of interference cavity embodiment 1.
Fig. 4 is the structural representation of interference cavity embodiment 2.
Fig. 5 a is the structural representation of interference cavity embodiment 3.
Fig. 5 b is sectional view and the partial enlarged drawing of interference cavity embodiment 3.
Fig. 5 c is the structural representation of the zone of heating of interference cavity embodiment 3.
Fig. 5 d is the structural representation of the insulation course of interference cavity embodiment 3.
Fig. 5 e is the structural representation of the heat sensing layer of interference cavity embodiment 3.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, this color dispersion compensation device 50 comprises a collimating apparatus 10 and an interference cavity 30, this collimating apparatus 10 comprises two fiber stubs 11 and lens 13, this pair fiber stub 11 and these lens 13 are fixing by one the 3rd glass bushing 17 and one second glass bushing 15 respectively, and two sleeve pipes connect relatively; This pair fiber stub 11 comprises an optic fibre input end 111a, a fiber-optic output 111b, these two optical fiber (111a, 111b) be arranged in parallel, and these two optical fiber (111a, end 111b) is fixing by cylindric first glass tube 112, so that these two optical fiber ends remain parastate, the transmitting terminal 1125 of this first glass tube 112 is a dip plane, optic fibre end and this dip plane are in same plane, do not stretch out this dip plane, be arranged with a tubulose the 3rd glass bushing 17 at first glass tube, 112 places of this pair fiber stub 11, the slightly larger in diameter of the 3rd glass bushing 17 inner rings is in the diameter of the first glass tube xsect of two fiber stubs 11, and the 3rd glass bushing 17 has a link 173; Be relatively set with lens 13 with the dip plane of this pair fiber stub 11, these lens 13 have a receiving end end face 133 and a lens end 135, this receiving end end face 133 parallels with the inclination transmitting terminal 1125 of first glass bushing, and a minim gap 16 is arranged between these both ends of the surface, these two dip plane are used to reflect away a part of reflected light, to prevent this partial reflection light reflected back optical fiber, stray light signal; The lens end 135 of the other end for protruding, these lens 13 are used for the ejaculation that light signal is parallel; These lens 13 are sheathed in one second glass bushing 15, the slightly larger in diameter of second glass bushing, 15 inner rings is in the diameter of lens pillar 13 xsects, this second glass bushing 15 has one first link 151 and one second link 153, this first link 151 is connected with the link 173 of the 3rd glass bushing 17, and this second link 153 is connected with a silicon material interference cavity 30.
This interference cavity 30 has one first reflecting surface 301 and one second reflecting surface 303, is coated with reflectance coating respectively on these two reflectings surface.Plated film on first reflecting surface 301 of this interference cavity 30 can only the special progression in reflecting part coherent light, and other light is not reflected, the plated film on second reflecting surface 303 of this interference cavity 30 can reflect whole light signals.Second reflecting surface 303 in interference cavity 30 is provided with a heating unit 350, and this heating unit 350 is used for to 30 heating of this silicon material interference cavity, changing the refractive index of this silicon material interference cavity 30, thereby changes the time delay of light signal, to reach the purpose of dispersion compensation.
During assembling, at first be coated with last layer glue at second glass bushing, 15 madial walls, lens pillar 13 is inserted in second glass bushing 15, be fixed by glue, secondly, be coated with last layer glue at the 3rd glass bushing 17 madial walls, first glass tube 112 of two fiber stubs 11 is inserted in the 3rd glass bushing 17, be fixed by glue, adjust the angle of the inclination transmitting terminal end face 1125 of first glass bushing 112 by optic test then with respect to the receiving end end face 133 of lens 13, with glue first link 151 of second glass bushing 15 and the link 173 of the 3rd glass bushing 17 are fixed, interference cavity 30 is fixed with glue at second link, 153 places of second glass bushing 15 at last.
As shown in Figure 3, structural representation for the utility model interference cavity 30 embodiment 1, this heating unit 350 is made up of a concave character type heating resistor 311 and a rectangle temperature-sensitive resistance 312, this thermistor 312 is placed in this heating resistor 311 middle vacant parts, is used for the temperature level of sensing interference cavity.
As shown in Figure 4, structural representation for the utility model interference cavity 30 embodiment 2, this heating unit 350 is made up of a Ω type sensible heat circle 323 and one ring-like heating collar 321, this sensible heat circle 323 is a thermistor, this heating collar 321 is a heating resistor, this heating collar is located at the vacant part in inside of sensible heat circle, is used for the temperature level of sensing interference cavity.
Shown in Fig. 5 a to 5e, structural representation for the utility model interference cavity 30 embodiment 3, this heating unit 350 is made up of the Ω type heat sensing layer 333, ring-type insulation course 335 and the zone of heating 331 that stack gradually, wherein heat sensing layer 333 is connected in this interference cavity 30, is used for the temperature level of sensing interference cavity.
This color dispersion compensation device not only can be adjusted needed chromatic dispersion compensation quantity neatly, and easy to assembly, has also reduced cost.
Although specifically introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present invention that do not break away from appended claims and limited; can make various variations to the present invention in the form and details, be protection scope of the present invention.
Claims (8)
1. a color dispersion compensation device comprises a collimating apparatus and an interference cavity, and this collimating apparatus comprises two fiber stubs and lens, and this pair fiber stub and this lens are oppositely arranged; Be connected with an interference cavity in this collimating apparatus, it is characterized in that: this interference cavity is provided with a heating unit, and this heating unit is used for to the interference cavity heating, to change the refractive index of interference cavity.
2. color dispersion compensation device as claimed in claim 1 is characterized in that: this interference cavity is the silicon material.
3. color dispersion compensation device as claimed in claim 1 is characterized in that: this heating unit is made up of thermistor and heating resistor.
4. color dispersion compensation device as claimed in claim 1 is characterized in that: this heating unit is made up of a sensible heat circle and a heating collar, and thermistor and heating resistor are formed, and heating resistor is in the outer ring, and thermistor is at inner ring.
5. color dispersion compensation device as claimed in claim 1 is characterized in that: this heating unit is made up of the heat sensing layer that stacks gradually, insulation course and zone of heating, and wherein heat sensing layer is connected in this interference cavity.
6. color dispersion compensation device as claimed in claim 1 is characterized in that: this interference cavity has one first reflecting surface and one second reflecting surface, is coated with reflectance coating respectively on these two reflectings surface.
7. color dispersion compensation device as claimed in claim 6 is characterized in that: the plated film on first reflecting surface of this interference cavity is the partial reflection film.
8. color dispersion compensation device as claimed in claim 6 is characterized in that: the plated film on second reflecting surface of this interference cavity is a total reflection film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201346209U CN201576144U (en) | 2009-08-07 | 2009-08-07 | Adjustable dispersion compensation device |
| US12/622,187 US8380067B2 (en) | 2009-08-07 | 2009-11-19 | Tunable chromatic dispersion compensation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201346209U CN201576144U (en) | 2009-08-07 | 2009-08-07 | Adjustable dispersion compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201576144U true CN201576144U (en) | 2010-09-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201346209U Expired - Lifetime CN201576144U (en) | 2009-08-07 | 2009-08-07 | Adjustable dispersion compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201576144U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324984A (en) * | 2011-07-15 | 2012-01-18 | 哈尔滨诺方光电科技有限公司 | Dispersion compensator and dispersion compensation system thereof |
| CN103676214A (en) * | 2012-09-26 | 2014-03-26 | 住友大阪水泥股份有限公司 | Optical modulator |
-
2009
- 2009-08-07 CN CN2009201346209U patent/CN201576144U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324984A (en) * | 2011-07-15 | 2012-01-18 | 哈尔滨诺方光电科技有限公司 | Dispersion compensator and dispersion compensation system thereof |
| CN103676214A (en) * | 2012-09-26 | 2014-03-26 | 住友大阪水泥股份有限公司 | Optical modulator |
| CN103676214B (en) * | 2012-09-26 | 2019-01-18 | 住友大阪水泥股份有限公司 | Optical modulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100908 |