CN202710786U - Dielectric film integrated polarization-maintaining coupler - Google Patents
Dielectric film integrated polarization-maintaining coupler Download PDFInfo
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- CN202710786U CN202710786U CN 201220374349 CN201220374349U CN202710786U CN 202710786 U CN202710786 U CN 202710786U CN 201220374349 CN201220374349 CN 201220374349 CN 201220374349 U CN201220374349 U CN 201220374349U CN 202710786 U CN202710786 U CN 202710786U
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Abstract
The utility model discloses a dielectric film integrated polarization-maintaining coupler. The dielectric film integrated polarization-maintaining coupler comprises a first reflection assembly, a polarizing chipware assembly, and a second reflection assembly which are packaged in an internally packaged glass tube sequentially from left to right. The first reflection assembly comprises a first polarization-maintaining dual-core glass pin and a first collimated light lens which are bonded to each other from left to right. The polarizing chipware assembly comprises a lens holder, a first wedge angle piece, and a second wedge angle piece which are bonded with one another from left to right. The second reflection assembly comprises a second collimated light lens and a second polarization-maintaining dual-core glass pin which are bonded with each other from left to right. Light splitting films are respectively arranged on the first collimated light lens and the second collimated light lens. The dielectric film integrated polarization-maintaining coupler of the utility model integrates the three functions of a polarizer, monitoring light source optical signals and a coupler, and has high directivity, little loss and good temperature stability.
Description
Technical field
The utility model relates to a kind of optical device of current transformer of all optical fibre structure, particularly relates to the integrated polarization-maintaining coupler of a kind of deielectric-coating, and the utility model belongs to optical fiber communication and sensory field.
Background technology
Along with the capacity of electric system is increasing, electric pressure is more and more higher, and traditional electromagnetic current transducer has presented a unsurmountable difficult problem.Therefore, people are also seeking new sensing principle when transforming traditional electromagnetic current transducer, in order to avoid the difficult problem that the conventional current mutual inductor exists.In this process, utilize the method development current transformer of optics more and more to be paid attention to.Utilize at present the current transformer of all optical fibre structure of optical means development in dynamic range, sensitivity, signal to noise ratio (S/N ratio), there is incomparable advantage the aspects such as insertion loss.
The light path of the current transformer of prior art all optical fibre structure is mainly by light source, fiber coupler, and the optical fiber polarizer, optical fiber phase retardation device, 500m polarization maintaining optical fibre lag line, optical-fibre wave plate and sensor fibre form.If all discrete optical device splicings can make the insertion loss of current transformer large in light path, the Insertion Loss temperature characterisitic is poor, and the extinction ratio temperature characterisitic is poor.Because its fiber coupler is for drawing the cone polarization-maintaining coupler, and use the light source monitoring client draw the cone polarization-maintaining coupler and coupled end two-port splitting ratio must be identical, this moment, monitor optical signal splitting ratio and coupling splitting ratio can not arbitrarily be controlled, and caused the main optical path loss ratio larger.
Summary of the invention
In order to overcome the defective of prior art, the utility model provides a kind of integrated polarization-maintaining coupler of deielectric-coating that integrates the polarizer, detecting function, coupling mechanism function.
The technical scheme that the utility model adopts is:
The integrated polarization-maintaining coupler of a kind of deielectric-coating is characterized in that:
Comprise the first reflection subassembly, a core shift spare assembly, the second reflection subassembly that are encapsulated in successively from left to right in the interior envelope glass tube; Described the first reflection subassembly is made of mutual bonding from left to right the first inclined to one side twin-core glass contact pin of guarantor and the first collimated light lens; Described core shift spare assembly by from left to right mutually bonding mirror holder, the first angle of wedge sheet, the second angle of wedge sheet consisted of; Described the second reflection subassembly is protected inclined to one side twin-core glass contact pin by the second mutual bonding from left to right collimated light lens and second and is consisted of; Be provided with spectro-film on described the first collimated light lens and the second collimated light lens.
Described the first collimated light lens are fixed on the mirror holder, and its transmitted light is by the corresponding optical window output that arranges on the mirror holder.
The setting of described spectro-film wavelength is identical with the signal light wavelength that it passes through.
The twin-core spacing that the described first twin-core spacing and second of protecting inclined to one side twin-core glass contact pin is protected inclined to one side twin-core contact pin is not identical.
Described first protects inclined to one side twin-core glass contact pin is set gradually from inside to outside and is formed by the first polarization maintaining optical fibre, the second polarization maintaining optical fibre, the first twin-core kapillary, the first glass tube, the first metal tail cover.
Described second protects inclined to one side twin-core glass contact pin by the 3rd polarization maintaining optical fibre, the 4th polarization maintaining optical fibre, and the second twin-core kapillary, the second glass tube, the second metal tail cover sets gradually composition from inside to outside.
The integrated polarization-maintaining coupler of deielectric-coating of the present utility model has following advantage:
1. the package dimension of the integrated polarization-maintaining coupler of deielectric-coating of the present utility model is smaller;
2. three kinds of functions of the integrated polarization-maintaining coupler collection of the deielectric-coating of the present utility model polarizer, monitoring light source light signal, coupling mechanism;
3. the integrated polarization-maintaining coupler directivity of deielectric-coating of the present utility model is high, loss is little, temperature stability good.
Description of drawings
Fig. 1 is the one-piece construction figure of the integrated polarization-maintaining coupler of the utility model deielectric-coating;
Fig. 2 is the utility model the first twin-core glass pin junction composition;
Fig. 3 is the utility model the second twin-core glass pin junction composition;
Fig. 4 is that the integrated polarization-maintaining coupler insertion loss of this practical deielectric-coating varies with temperature curve map;
Wherein
1, first protects inclined to one side twin-core glass contact pin;
1-1, the first polarization maintaining optical fibre; 1-2, the second polarization maintaining optical fibre;
1-3, the first twin-core kapillary; 1-4, the first glass tube;
1-5, the first metal tail pipe;
2, the first collimated light lens; 3, mirror holder;
4, the first angle of wedge sheet; 5, the second angle of wedge sheet;
6, the second collimated light lens;
7, second protect inclined to one side twin-core glass contact pin;
7-1, the 3rd polarization maintaining optical fibre; 7-2, the 4th polarization maintaining optical fibre;
7-3, the second twin-core kapillary; 7-4, the second glass tube;
7-5, the second metal tail pipe;
8, interior envelope glass tube; 9, the first reflection subassembly;
10, the second reflection subassembly; 11, play core shift spare assembly;
Embodiment
Below in conjunction with accompanying drawing and example the utility model is described further:
As shown in Figure 1, the integrated polarization-maintaining coupler of deielectric-coating of the present utility model comprises the first reflection subassembly 9, a core shift spare assembly 11, the second reflection subassembly 10 that are encapsulated in successively from left to right in the interior envelope glass tube 8; The first reflection subassembly 9 is made of mutual bonding from left to right the first inclined to one side twin-core glass contact pin 1 of guarantor and the first collimated light lens 2; Rise core shift spare assembly 11 by from left to right mutually bonding mirror holder 3, the first angle of wedge sheet 4, the second angle of wedge sheet 5 consisted of; Described the second reflection subassembly 10 is protected inclined to one side twin-core glass contact pin 7 by the second mutual bonding from left to right collimated light lens 6 and second and is consisted of.Be provided with spectro-film on described the first collimated light lens 2, spectro-film arranges with the signal light wavelength identical, and its effect is that the flashlight energy is carried out proportional distribution, and the flashlight of a certain ratio of transmission reflects the flashlight of another ratio.Be provided with spectro-film on described the second collimated light lens 4.Spectro-film arranges with the signal light wavelength identical, and its effect is that the flashlight energy is carried out proportional distribution, and the flashlight of a certain ratio of transmission reflects the flashlight of another ratio.The first collimated light lens 2 are fixedly installed in the mirror holder 3, and the transmitted light of the first collimation lens 2 can be by the corresponding optical window output that arranges on the mirror holder 3.
Described first protects inclined to one side twin-core glass contact pin 1 as shown in Figure 2, comprises that the first polarization maintaining optical fibre 1-1, the second polarization maintaining optical fibre 1-2, the first twin-core kapillary 1-3, the first glass tube 1-4, the first metal tail cover 1-5 set gradually composition from inside to outside.Described second protects inclined to one side twin-core glass contact pin 7 as shown in Figure 3, comprises the 3rd polarization maintaining optical fibre 7-1, the 4th polarization maintaining optical fibre 7-2, the second twin-core kapillary 7-3, the second glass tube 7-4, and the second metal tail cover 7-5 forms.
The course of work to the integrated polarization-maintaining coupler of deielectric-coating of the present utility model is specifically described: flashlight is inputted from the first polarization maintaining optical fibre 1-1, enter the first collimated light lens 2, behind the collimation and energy distribution effect of flashlight through the first collimated light lens 2, the flashlight of a certain ratio of spectro-film transmission enters mirror holder 3 from the first collimated light lens, the first angle of wedge sheet 4, the second angle of wedge sheet 5, the optical signals natural light becomes along the linearly polarized light of slow-axis direction vibration, enter the second collimated light lens 6, behind the collimation and energy distribution effect through the second collimated light lens, enter the 3rd polarization maintaining optical fibre 7-1 output.Enter the second polarization maintaining optical fibre 1-2 output from the flashlight of another ratio of the first collimated light lens spectro-film reflection.Conversely, flashlight is inputted from the 3rd polarization maintaining optical fibre 7-1, enter the second collimated light lens 6, behind the collimation and energy distribution effect of flashlight through the second collimated light lens, enter the second angle of wedge sheet 5 from the flashlight of a certain ratio of the second collimated light lens 6 spectro-film transmissions, the first angle of wedge sheet 4, mirror holder 3, the optical signals natural light becomes along the linearly polarized light of slow-axis direction vibration, enter the first collimated light lens 2, behind the collimation and energy distribution effect through the first collimated light lens, enter the first polarization maintaining optical fibre 1-1 output.Enter the 4th polarization maintaining optical fibre 7-2 output from the flashlight of another ratio of the second collimated light lens 6 spectro-films reflections.
The light signal directivity can prevent effectively that greater than 65dB the light signal between the first optical fiber 1-1 and the 4th optical fiber 7-2 from crosstalking between the first polarization maintaining optical fibre 1-1 and the 4th polarization maintaining optical fibre 7-2; The light signal directivity is greater than 65dB between the second polarization maintaining optical fibre 1-2 and the 3rd polarization maintaining optical fibre 7-1, can prevent effectively that the light signal between the second polarization maintaining optical fibre 1-2 and the 3rd polarization maintaining optical fibre 7-1 from crosstalking, the utility model adopts the twin-core spacing of the second twin-core kapillary 7-3 in the first twin-core spacing of protecting the first twin-core kapillary 1-3 in the inclined to one side twin-core glass contact pin 1 and the inclined to one side twin-core contact pin 7 of the second guarantor not identical, can make the first polarization maintaining optical fibre and the 4th polarization maintaining optical fibre, the light signal directivity is greater than 65dB between the second polarization maintaining optical fibre and the 3rd polarization maintaining optical fibre, the directivity of the integrated polarization-maintaining coupler of deielectric-coating this moment is high, crosstalks little.
The manufacturing process of the integrated polarization-maintaining coupler of deielectric-coating of the present utility model is specific as follows: the first inclined to one side twin-core glass contact pin 1 of guarantor and the first collimated light lens 2 reflect debugging, form the first reflection subassembly 9.The second inclined to one side twin-core glass contact pin 7 of guarantor and the second collimated light lens 6 reflect debugging, form the second reflection subassembly 10.Mirror holder 3, the first angle of wedge sheet 4, the second angle of wedge sheet 5 bond together, and have formed core shift spare assembly 11.The first reflection subassembly 9 and the second reflection subassembly 10 are carried out the transmission debugging, again after playing core shift spare assembly 11 and being enclosed within on the first reflection subassembly 9 and again carrying out the debugging of Insertion Loss debugging and extinction ratio between the second reflection subassembly 10, mirror holder 3 is fixed in the core shift spare assembly 11 with rising with the first collimated light lens 2 in the first reflection subassembly 9, the first reflection subassembly 9, the second reflection subassembly 10, a core shift spare assembly 11 are encapsulated in the interior envelope glass tube 8, make the integrated polarization-maintaining coupler of the related deielectric-coating of the utility model.
The insertion loss that draws the cone polarization-maintaining coupler that the prior art current transformer uses varies with temperature less than 5dB at-40 ℃ ~ 70 ℃, and adopt the main optical path of the integrated polarization-maintaining coupler of the utility model deielectric-coating and monitoring light path insertion loss to vary with temperature less than 0.2dB at-40 ℃ ~ 70 ℃, temperature stability is good, and insertion loss varies with temperature curve map as shown in Figure 4.
Current transformer uses drawing when boring polarization-maintaining coupler of prior art, use draw the cone light source monitoring client of polarization-maintaining coupler and coupled end two-port splitting ratio must be identical, this moment, monitor optical signal splitting ratio and coupling splitting ratio can not arbitrarily be controlled, and caused the main optical path loss ratio larger.And adopt the utility model can be set as arbitrary value by the spectro-film that wavelength is set as monitor optical signal splitting ratio, for example can set in actual applications light source monitoring client light splitting ratio is below 5%, the coupling splitting ratio can arrange other ratio, the setting of light source monitoring client splitting ratio does not affect the splitting ratio of other end coupled end, thereby reduces the main optical path power attenuation.
Although the utility model has at length illustrated and described a relevant specific embodiment reference, those skilled in the art can should be appreciated that, can make in the form and details various changes not deviating from the spirit and scope of the present invention.These change all will fall into the desired protection domain of claim of the present invention.
Claims (6)
1. integrated polarization-maintaining coupler of deielectric-coating is characterized in that:
Comprise the first reflection subassembly (9), a core shift spare assembly (11), the second reflection subassembly (10) that are encapsulated in successively from left to right in the interior envelope glass tube (8); Described the first reflection subassembly (9) is made of with the first collimated light lens (2) the first mutual bonding from left to right inclined to one side twin-core glass contact pin of guarantor (1); Described core shift spare assembly (11) by from left to right mutually bonding mirror holder (3), the first angle of wedge sheet (4), the second angle of wedge sheet (5) consisted of; Described the second reflection subassembly (10) is protected inclined to one side twin-core glass contact pin (7) by the second mutual bonding from left to right collimated light lens (6) and second and is consisted of; Be provided with spectro-film on described the first collimated light lens (2) and the second collimated light lens (6).
2. the integrated polarization-maintaining coupler of a kind of deielectric-coating as claimed in claim 1 is characterized in that:
Described the first collimated light lens (2) are fixed on the mirror holder (3), and its transmitted light is by the upper corresponding optical window output that arranges of mirror holder (3).
3. the integrated polarization-maintaining coupler of a kind of deielectric-coating as claimed in claim 1 or 2 is characterized in that:
The setting of described spectro-film wavelength is identical with the signal light wavelength that it passes through.
4. the integrated polarization-maintaining coupler of a kind of deielectric-coating as claimed in claim 1 or 2 is characterized in that:
The twin-core spacing that the described first twin-core spacing and second of protecting inclined to one side twin-core glass contact pin (1) is protected inclined to one side twin-core contact pin (7) is not identical.
5. the integrated polarization-maintaining coupler of a kind of deielectric-coating as claimed in claim 1 or 2 is characterized in that:
Described first protects inclined to one side twin-core glass contact pin (1) is set gradually from inside to outside and is formed by the first polarization maintaining optical fibre (1-1), the second polarization maintaining optical fibre (1-2), the first twin-core kapillary (1-3), the first glass tube (1-4), the first metal tail cover (1-5).
6. the integrated polarization-maintaining coupler of a kind of deielectric-coating as claimed in claim 1 or 2 is characterized in that:
Described second protects inclined to one side twin-core glass contact pin (7) is set gradually from inside to outside and is formed by the 3rd polarization maintaining optical fibre (7-1), the 4th polarization maintaining optical fibre (7-2), the second twin-core kapillary (7-3), the second glass tube (7-4), the second metal tail cover (7-5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374349 CN202710786U (en) | 2012-07-31 | 2012-07-31 | Dielectric film integrated polarization-maintaining coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374349 CN202710786U (en) | 2012-07-31 | 2012-07-31 | Dielectric film integrated polarization-maintaining coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710786U true CN202710786U (en) | 2013-01-30 |
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ID=47591074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220374349 Expired - Lifetime CN202710786U (en) | 2012-07-31 | 2012-07-31 | Dielectric film integrated polarization-maintaining coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989089A (en) * | 2019-12-27 | 2020-04-10 | 光越科技(深圳)有限公司 | Polarization maintaining optical fiber head and collimator |
| CN111443429A (en) * | 2020-03-27 | 2020-07-24 | 北京航空航天大学 | Thin film type optical fiber polarizing device |
-
2012
- 2012-07-31 CN CN 201220374349 patent/CN202710786U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989089A (en) * | 2019-12-27 | 2020-04-10 | 光越科技(深圳)有限公司 | Polarization maintaining optical fiber head and collimator |
| CN111443429A (en) * | 2020-03-27 | 2020-07-24 | 北京航空航天大学 | Thin film type optical fiber polarizing device |
| CN111443429B (en) * | 2020-03-27 | 2021-04-02 | 北京航空航天大学 | Thin film type optical fiber polarizing device |
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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 |
Granted publication date: 20130130 |
|
| CX01 | Expiry of patent term |