CN203849441U - Multi-cavity optical filter - Google Patents
Multi-cavity optical filter Download PDFInfo
- Publication number
- CN203849441U CN203849441U CN201420277661.4U CN201420277661U CN203849441U CN 203849441 U CN203849441 U CN 203849441U CN 201420277661 U CN201420277661 U CN 201420277661U CN 203849441 U CN203849441 U CN 203849441U
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- layer
- thickness
- film
- optical filter
- glass substrate
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- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011521 glass Substances 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 16
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 14
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 14
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Optical Filters (AREA)
Abstract
The utility model discloses a multi-cavity optical filter composed of a glass substrate, a high-reflective film, and an antireflection film. The high-reflective film is disposed on the surface of a side of the glass substrate. The antireflection film is disposed on the surface of the other side of the glass substrate. The high-reflective film is a 260-layer structure formed by alternately stacking 130 tantalum pentoxide reflection dielectric layers and 130 silicon dioxide reflection dielectric layers. Odd layers between the 1th layer and the 259th layer are tantalum pentoxide reflection dielectric layers. Even layers between the 2nd layer and the 260th layer are silicon dioxide reflection dielectric layers. Since the above structural style is used, by means of the material, the thickness, the stacking manner, and the number of film layers, the film is coated in a multi-cavity manner rather than a conventional less-cavity manner. Thus, in an index aspect, RIPPLE is less than 0.13 within a pass band range from 1500 to 1580. In addition, the multi-cavity optical filter achieves -40db of permeation isolation degree and 0.05db of permeation insertion loss when used.
Description
Technical field
The utility model relates to a kind of optical filter, particularly a kind of multi-cavity optical filter.
Background technology
Complex light, incides after the logical light medium of the glass plate that is coated with anti-reflection film out through input collimating device collimation from input optical fibre, at air and glass interface generation refraction, enters in glass plate, enters a series of to the last light that forms 8 channels of the separation of light.At it, separated and transmitting procedure is because a variety of causes causes very large consumption to light.This project aly can reduce the optical filter of light loss in order to work out in transmission and detachment process. for the demand to technical requirements such as the high steepness of optical filter of existing market proposition, this project meets Theoretical Design and the coating process monitoring calculation of client's index request by research, solving the index of client's high request, is mainly to meet 1500nm to the technical barrier of the broadband product of the high steepness requirement of 1580nm.
This product is used the film system in less chamber to design at present, and the RIPPLE value of index aspect in 1500-1580 free transmission range can only be accomplished 0.2db.At present this product see through that isolation can only make when counting plated film of less chamber-30db, through Insertion Loss, be 0.1db.When the reflection isolation degree of this product is counted plated film in less chamber at present, can only accomplish 13db.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of low multi-cavity optical filter of Insertion Loss that sees through is provided.
For achieving the above object, the technical scheme that the utility model adopts is:
Multi-cavity optical filter, it is to consist of glass substrate, high-reflecting film and anti-reflection film, high-reflecting film is located at a side surface of glass substrate, anti-reflection film is located at the opposite side surface of glass substrate, described high-reflecting film is by 130 tantalum pentoxide reflecting medium layer and 130 260 layers of structures that silicon dioxide reflecting medium layer is alternately formed by stacking, the odd-level of the 1st layer to the 259th layer is tantalum pentoxide reflecting medium layer, and the even level of the 2nd layer to the 260th layer is silicon dioxide reflecting medium layer.
In described even level, wherein, the thickness of the 2nd layer is 797.79um, the thickness of the 4th layer is 1063.18um, and the thickness of the 22nd layer is 1063.18um, and the thickness of the 258th layer is 225.99um, the thickness of the 260th layer is 356.78um, and the thickness of all the other even levels is 265.80um; In described odd-level, the thickness of the 257th layer is 154.08um, and the thickness of the 259th layer is 54.98um, and the thickness of all the other odd-levels is 181.56um.
Described anti-reflection film is to consist of 1 tantalum pentoxide reflecting medium layer and 1 silicon dioxide reflecting medium layer, and the 1st layer is silicon dioxide reflecting medium layer, is close to the surface of glass substrate, and the 2nd layer is tantalum pentoxide reflecting medium layer, is close to the surface of the 1st layer.
The thickness of described anti-reflection film is 390.2um.
In described anti-reflection film, the thickness of ground floor is 52.4um, and the thickness of the second layer is 337.8um.
The beneficial effects of the utility model: owing to adopting above-mentioned version, material, the thickness of the utility model by rete and stack mode and the number of plies, film system is designed to super multi-cavity from present less chamber and carries out plated film, can make the RIPPLE of index aspect within the scope of passband 1500-1580 be less than 0.13; Use alternately stack and the control of each layer thickness mutually of high-index material and end refraction materials, the utility model, when application, sees through can accomplish-40db of isolation, and seeing through Insertion Loss is 0.05db.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
In figure: 1, glass substrate; 2, high-reflecting film; 3, anti-reflection film.
Embodiment
As shown in Figure 1, multi-cavity optical filter, it is to consist of glass substrate 1, high-reflecting film 2 and anti-reflection film 3, high-reflecting film 2 is located at a side surface of glass substrate 1, anti-reflection film 3 is located at the opposite side surface of glass substrate 1, described high-reflecting film 2 is by 130 tantalum pentoxide reflecting medium layer and 130 260 layers of structures that silicon dioxide reflecting medium layer is alternately formed by stacking, the odd-level of the 1st layer to the 259th layer is tantalum pentoxide reflecting medium layer, and the even level of the 2nd layer to the 260th layer is silicon dioxide reflecting medium layer.In described even level, wherein, the thickness of the 2nd layer is 797.79um, the thickness of the 4th layer is 1063.18um, and the thickness of the 22nd layer is 1063.18um, and the thickness of the 258th layer is 225.99um, the thickness of the 260th layer is 356.78um, and the thickness of all the other even levels is 265.80um; In described odd-level, the thickness of the 257th layer is 154.08um, and the thickness of the 259th layer is 54.98um, and the thickness of all the other odd-levels is 181.56um.
Described anti-reflection film is to consist of 1 tantalum pentoxide reflecting medium layer and 1 silicon dioxide reflecting medium layer, and the 1st layer is silicon dioxide reflecting medium layer, is close to the surface of glass substrate, and the 2nd layer is tantalum pentoxide reflecting medium layer, is close to the surface of the 1st layer.The thickness of described anti-reflection film is 390.2um.In described anti-reflection film, the thickness of ground floor is 52.4um, and the thickness of the second layer is 337.8um.
The above is preferred implementation of the present utility model; certainly can not limit with this interest field of the utility model; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or is equal to replacement, do not depart from the protection domain of technical solutions of the utility model.
Claims (5)
1. a multi-cavity optical filter, it is characterized in that: it is to consist of glass substrate, high-reflecting film and anti-reflection film, high-reflecting film is located at a side surface of glass substrate, anti-reflection film is located at the opposite side surface of glass substrate, described high-reflecting film is by 130 tantalum pentoxide reflecting medium layer and 130 260 layers of structures that silicon dioxide reflecting medium layer is alternately formed by stacking, the odd-level of the 1st layer to the 259th layer is tantalum pentoxide reflecting medium layer, and the even level of the 2nd layer to the 260th layer is silicon dioxide reflecting medium layer.
2. multi-cavity optical filter according to claim 1, it is characterized in that: in described even level, wherein, the thickness of the 2nd layer is 797.79um, the thickness of the 4th layer is 1063.18um, and the thickness of the 22nd layer is 1063.18um, and the thickness of the 258th layer is 225.99um, the thickness of the 260th layer is 356.78um, and the thickness of all the other even levels is 265.80um; In described odd-level, the thickness of the 257th layer is 154.08um, and the thickness of the 259th layer is 54.98um, and the thickness of all the other odd-levels is 181.56um.
3. multi-cavity optical filter according to claim 1 and 2, it is characterized in that: described anti-reflection film is to consist of 1 tantalum pentoxide reflecting medium layer and 1 silicon dioxide reflecting medium layer, the 1st layer is silicon dioxide reflecting medium layer, be close to the surface of glass substrate, the 2nd layer is tantalum pentoxide reflecting medium layer, is close to the surface of the 1st layer.
4. multi-cavity optical filter according to claim 3, is characterized in that: the thickness of described anti-reflection film is 390.2um.
5. multi-cavity optical filter according to claim 4, is characterized in that: in described anti-reflection film, the thickness of ground floor is 52.4um, and the thickness of the second layer is 337.8um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277661.4U CN203849441U (en) | 2014-05-28 | 2014-05-28 | Multi-cavity optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277661.4U CN203849441U (en) | 2014-05-28 | 2014-05-28 | Multi-cavity optical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849441U true CN203849441U (en) | 2014-09-24 |
Family
ID=51562440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420277661.4U Expired - Lifetime CN203849441U (en) | 2014-05-28 | 2014-05-28 | Multi-cavity optical filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203849441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130210A (en) * | 2017-05-03 | 2017-09-05 | 中国建筑材料科学研究总院 | Surface is coated with chalcogenide glass of infrared DLC protecting film and preparation method thereof |
| US10222526B2 (en) | 2012-07-16 | 2019-03-05 | Viavi Solutions Inc. | Optical filter and sensor system |
-
2014
- 2014-05-28 CN CN201420277661.4U patent/CN203849441U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10222526B2 (en) | 2012-07-16 | 2019-03-05 | Viavi Solutions Inc. | Optical filter and sensor system |
| US11131794B2 (en) | 2012-07-16 | 2021-09-28 | Viavi Solutions Inc. | Optical filter and sensor system |
| CN107130210A (en) * | 2017-05-03 | 2017-09-05 | 中国建筑材料科学研究总院 | Surface is coated with chalcogenide glass of infrared DLC protecting film and preparation method thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |