CN2557961Y - Optical fibre array - Google Patents
Optical fibre array Download PDFInfo
- Publication number
- CN2557961Y CN2557961Y CN 02229401 CN02229401U CN2557961Y CN 2557961 Y CN2557961 Y CN 2557961Y CN 02229401 CN02229401 CN 02229401 CN 02229401 U CN02229401 U CN 02229401U CN 2557961 Y CN2557961 Y CN 2557961Y
- Authority
- CN
- China
- Prior art keywords
- fiber
- fiber array
- light
- absorbing material
- array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model provides a fiber array. The end faces of the fiber array are inclined in 7-10 degrees and are plated with a reflection reducing film aiming at the fiber refractive index and the fiber transmission wavelength; the reflectivity of the reflection reducing film is less than 0.5 percent. The interval between every two fibers in the fiber array is 0.25 mm or the integer multiple of 0.25 mm. An upper base board and/or a lower base board are/is made from light absorbing material; the light decay glass with the light decay function is the best choice; the total absorption rate of the base board is more than 20 dB but less than 40 dB, and the light absorbing material with 7-12 dB/mm and 1.4-1.6 reflectivity is usually adopted. The proposal has the advantages that the manufacture method is simple, the crosstalk caused by reflection and dispersion between every two fiber passages is effectively reduced, and no large change or complex structure is adopted, thereby the performance of the device in the system is improved, an unexpected effect is produced and the technical problem puzzling the field is solved.
Description
Technical field
The utility model relates to a kind of novel fiber array, particularly can reduce the fiber array of crosstalking between the optical-fibre channel in the optical arrays device.Be mainly used in carrying out in the fiber optic communication field optically-coupled of array device, such as the coupling that is used for AWG and optical fiber, the coupling of array laser and array fibre, coupling of detector array and array fibre or the like.Can effectively reduce crosstalking between the optical-fibre channel that causes owing to end face reflection, scattering and other reasons; The inclined-plane that the end face rubbing down is angled, the return loss that improves fiber end face; At end face plating anti-reflection film, reduce to crosstalk and Insertion Loss, improve coupling efficiency and return loss.Be mainly used in the array device of fiber optic communication field.
Background technology
At present, along with the continuous increase of information communication amount, optical communication is moving towards integrated road.Traditional device is all developing to the stronger direction of the more performances of the littler function of volume.In optical communication, measurement and other association areas because the widespread use of fiber waveguide device, with it the application of Ou He fiber array more and more widely, method for making also gets more and more thereupon, fabricating quality, technology, efficient and integrated level improve constantly.
Array fibre structurally mainly adopts the V-type groove to make infrabasal plate peace substrate at present and does the bonding method making of upper substrate, and material mostly is silicon, glass, plastics etc.General method for making is, optical fiber one end covering is dialled, and exposes bare fibre, puts it in the V-type groove, and gluing is put upper substrate thereon then, compresses, and alignment makes adhesive curing, will not have the end face polishing of optical fiber again, promptly becomes fiber array.
Because the requirement of device, the optical fiber spacing is generally very little, and in the application of fiber array, topmost problem is exactly will overcome between the adjacent fiber owing to influencing each other that light scattering, reflection produce, and promptly crosstalks.For example also can produce in array laser that causes by the scattering of array laser emergent light and the array fibre coupling process and crosstalk.
When fiber end face was vertical cross-section, the light of propagating in optical fiber ran into end face and has small part and reflect back light source, and light source is caused damage.
Summary of the invention
The purpose of this utility model be design a kind of simple, effectively reduce crosstalking and Insertion Loss between the optical-fibre channel that reflection, scattering cause, do not having bigger change or adopting under the situation of complicated structure, coupling efficiency and return loss, improve the performance of device in system, and the splendid novel optical fiber array of effect.
Fiber array of the present utility model comprises upper and lower substrate and array fibre, the end slope 7-10 degree angle of its fiber array, the end face of fiber array is coated with the anti-reflection film at the refractive index of optical fiber and Optical Fiber Transmission wavelength, anti-reflection film is plated on the end face that adopts upper substrate that light absorbing material makes or infrabasal plate, perhaps on the end face of upper substrate and infrabasal plate.
Described fiber array, its substrate are to adopt the optical attenuation glass material to make.
The expansion coefficient of the light absorbing material that substrate adopts is less than 3 * 10
6/ K.
Substrate overall light absorptivity greater than 20dB less than 40dB.Generally select the light absorbing material of 7-12dB/mm for use, refractive index is between 1.4 to 1.6.
Described fiber array, the reflectivity of anti-reflection film is less than 0.5%.
Described fiber array, the optical fiber spacing of its array fibre are 0.25mm or its integral multiple.
The utility model has the advantages that method for making is simple, identical with classic method, effectively reduced the cross-interference issue between the optical-fibre channel that reflection, scattering cause, and do not have bigger change or adopt complicated structure, thereby improved the performance of device in system, produce beyond thought effect, solved the technical barrier that perplexs this field.
Description of drawings
Fig. 1 is the end view drawing of the fiber array of classic method making.1-1 is a upper cover plate, and 1-2 is a lower master film, and 1-3 is an optical fiber, and 1-4 is a glue.Upper cover plate 1-1 generally adopts glass material, and lower master film 1-2 is the V-type groove, with fibre clip between, connect with 353ND is gluing, then with the end face rubbing down.
Fig. 2 is the side view of fiber array 1, can see, end face 1-5 is become θ degree angle by rubbing down, and θ should be between the 7-10 degree, and the crosstalking of device, Insertion Loss, coupling efficiency and return loss will well be improved like this.
Fig. 3 is the fiber array 1 that the utility model is made.Its upper cover plate 1-1 adopts at the optical attenuation glass more than the specific wavelength absorptivity arrival 10dB/mm, and lower master film 1-2 adopts the V-type groove.If it is lower that the optical fiber spacing requires, can adopt the optical attenuation glass identical to make with upper cover plate 1-1.The end face 1-5 of fiber array is become 7 degree angles by rubbing down, can plate at optical fiber and the long anti-reflection film of wave travels wherein in order to reach better index.
Embodiment
Fig. 1, Fig. 2 are a kind of embodiment of the present utility model.The end face of fiber array is become 7-10 degree inclination angle by rubbing down.The light of propagating in optical fiber like this can reflect outside of fiber when running into end face, and can not get back to light source, reaches the effect that improves return loss.
The utility model is in order to reach better index, adopt light absorbing material make upper substrate and or infrabasal plate, end face plates the anti-reflection film 4-1 at the wavelength of the refractive index of optical fiber and Optical Fiber Transmission.As doing infrabasal plate with the V-type groove, absorbing material is done upper substrate, is coated with that 353ND is gluing to connect that optical fiber forms in intermediate fabrication.Fiber array of the present utility model adopt can absorb the material upper substrate that transmits light in the optical fiber with or infrabasal plate, light absorbing material can be light absorption glass, to the plastics of infrared Absorption, epoxy glue etc., be generally optical attenuation glass, make more convenient, also can be better and the matched coefficients of thermal expansion of optical fiber, the expansion coefficient of light absorbing material is less than 3 * 10
6/ K.
Described light absorbing material can be selected the light that can selectivity absorbs within a certain wavelength coverage for use, as communicates by letter and go up 980nm, the 1310nm that often uses, 1550nm equiwavelength's light.Substrate overall absorption rate greater than 20dB less than 40dB.Generally select the light absorbing material of 7-12dB/mm for use.If require the overall absorption rate greater than more than the 20dB, for structure shown in Figure 1, select the optical attenuation glass of 10dB/mm for use, thickness 0.5mm, length 2mm just can reach the requirement of overall absorption rate.Absorptivity can not be too high, otherwise mix too much, and indexs such as the expansion coefficient of baseplate material and refractive index all can change, even significantly degeneration of physical strength generation, causes the instability of structure.
In addition, use optical attenuation glass can also make its refractive index close with the refractive index of optical fiber, the optical fibre refractivity of the usefulness of communicating by letter can adopt the glass of refractive index between 1.4 to 1.6 as substrate, as common K9 glass near 1.46.Like this, plate anti-reflection film, can further reduce reflection, the scattering of end face at the wavelength of the refractive index of optical fiber and Optical Fiber Transmission at its end face.Parasitic light can enter fiber array upper substrate and or infrabasal plate, light can be absorbed, and has reduced crosstalking of parasitic light.For the light of propagating in the optical fiber, have more propagates light in the end and pass end face, do not influence light source and can not reflect back, thereby improved the coupling efficiency of device, Insertion Loss reduces, and has improved return loss.
In order to improve the combination property of device, when adopting light absorbing material to reduce to crosstalk, another important measures is exactly, oblique angle with fiber end face rubbing down 7-10 degree, the light of propagating in optical fiber like this can reflect outside of fiber when running into the interface, rather than get back to light source, thereby reach the effect that improves return loss.
When system is higher to the requirement of device, can also be at the refractive index of optical fiber and the optical wavelength of spread fiber, at the end face plating anti-reflection film of fiber array.Like this, parasitic light, no matter be scattered in or be reflected in the light of fiber array end face, because the effect of anti-reflection film, can enter in the upper cover plate or lower shoe of fiber array, and these materials to be light absorbing materials make, so the light of coming in can be absorbed, rather than outgoing impacts once more again.Like this, just reduced and caused the parasitic light of crosstalking, crosstalked thereby reduced.For the light of propagating in the optical fiber, when running into end face, have more light and pass end face, rather than reflect back and influence light source, like this, the coupling efficiency of device is improved, and Insertion Loss reduces, and return loss also is improved.General, fiber array is sealed in the device, and all light all enter device by optical fiber, so parasitic light above-mentioned all has same nature.
According to the needs of device, the size of fiber array, the spacing of optical fiber can be adjusted.The change in size of fiber array is mainly on upper cover plate and lower shoe, and fiber array also can respective change to the assimilation effect of light like this, in order to reach requirement, can adjust absorptivity to reach target.The spacing of optical fiber depends mainly on the spacing of lower shoe V-type groove.When the V-type groove adopted silica-based corrosion to obtain, general, the spacing of V-type groove was 0.25mm or its integral multiple.
Claims (8)
1, a kind of fiber array, comprise upper and lower substrate and array fibre, the end slope 7-10 degree angle that it is characterized in that fiber array, the end face of fiber array is coated with the anti-reflection film at the refractive index of optical fiber and Optical Fiber Transmission wavelength, anti-reflection film be plated in adopt upper substrate that light absorbing material makes and or the end face of infrabasal plate on.
2, fiber array according to claim 1 is characterized in that substrate is to adopt the optical attenuation glass material to make.
3, fiber array according to claim 1 and 2, the expansion coefficient that it is characterized in that the light absorbing material that substrate adopts is less than 3 * 10
6/ K.
4, fiber array according to claim 1 and 2, it is characterized in that substrate overall light absorptivity greater than 20dB less than 40dB.
5, fiber array according to claim 4 is characterized in that selecting for use the light absorbing material of 7-12dB/mm.
6, fiber array according to claim 1 and 2 is characterized in that substrate is to adopt the light absorbing material of refractive index between 1.4 to 1.6.
7, fiber array according to claim 1 and 2, the reflectivity of anti-reflection film is less than 0.5%.
8, fiber array according to claim 1 and 2, the optical fiber spacing that it is characterized in that array fibre are 0.25mm or its integral multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02229401 CN2557961Y (en) | 2002-05-16 | 2002-05-16 | Optical fibre array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02229401 CN2557961Y (en) | 2002-05-16 | 2002-05-16 | Optical fibre array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2557961Y true CN2557961Y (en) | 2003-06-25 |
Family
ID=33705720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02229401 Expired - Fee Related CN2557961Y (en) | 2002-05-16 | 2002-05-16 | Optical fibre array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2557961Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015143B (en) * | 2004-05-17 | 2012-01-18 | 思科技术公司 | Multiple channel optical transceiver modules |
| CN102411174A (en) * | 2011-12-28 | 2012-04-11 | 武汉电信器件有限公司 | Optical fiber core insert |
| CN107703584A (en) * | 2017-10-20 | 2018-02-16 | 苏州天步光电技术有限公司 | A kind of glass groove tank manufacturing method for meeting 2-D optical fibre array requirement |
| CN108646351A (en) * | 2018-04-23 | 2018-10-12 | 三峡大学 | A kind of the tail optical fiber end face structure and production method of optical fiber optical grating array |
| CN110234967A (en) * | 2017-02-02 | 2019-09-13 | 株式会社藤仓 | The manufacturing method of photodetector and photodetector |
| CN112882159A (en) * | 2021-03-03 | 2021-06-01 | 南京华脉科技股份有限公司 | Integrated wavelength division multiplexer |
| CN117761844A (en) * | 2023-11-30 | 2024-03-26 | 武汉华工正源光子技术有限公司 | Optical engine, optical module, optical system suitable for optical chip coupling and FA structure |
-
2002
- 2002-05-16 CN CN 02229401 patent/CN2557961Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015143B (en) * | 2004-05-17 | 2012-01-18 | 思科技术公司 | Multiple channel optical transceiver modules |
| CN102411174A (en) * | 2011-12-28 | 2012-04-11 | 武汉电信器件有限公司 | Optical fiber core insert |
| CN110234967A (en) * | 2017-02-02 | 2019-09-13 | 株式会社藤仓 | The manufacturing method of photodetector and photodetector |
| CN107703584A (en) * | 2017-10-20 | 2018-02-16 | 苏州天步光电技术有限公司 | A kind of glass groove tank manufacturing method for meeting 2-D optical fibre array requirement |
| CN108646351A (en) * | 2018-04-23 | 2018-10-12 | 三峡大学 | A kind of the tail optical fiber end face structure and production method of optical fiber optical grating array |
| CN108646351B (en) * | 2018-04-23 | 2020-05-05 | 三峡大学 | Tail fiber end face structure of fiber grating array and manufacturing method |
| CN112882159A (en) * | 2021-03-03 | 2021-06-01 | 南京华脉科技股份有限公司 | Integrated wavelength division multiplexer |
| CN117761844A (en) * | 2023-11-30 | 2024-03-26 | 武汉华工正源光子技术有限公司 | Optical engine, optical module, optical system suitable for optical chip coupling and FA structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3370986B2 (en) | Image display by attenuated total internal reflection | |
| US5497438A (en) | Optical transmission and reception module having coupled optical waveguide chips | |
| CN1062215A (en) | The optical fiber splicing device that comprises attenuator | |
| GB2102145A (en) | Optical plane circuits and methods for manufacturing such circuits | |
| JP2985791B2 (en) | Coupling structure of optical waveguide and light receiving element | |
| CN2557961Y (en) | Optical fibre array | |
| CA1126554A (en) | Fiber optic coupler for tapping into fiber optic line | |
| US7308174B2 (en) | Optical device including a filter member for dividing a portion of signal light | |
| CA2352950A1 (en) | Article comprising a multimode optical fiber coupler | |
| US4398794A (en) | Dual directional tap coupler | |
| CN1203336C (en) | Variable optical attenuator | |
| CN1703639A (en) | Focusing fiber optic | |
| CN114114565B (en) | Semiconductor laser collimating device | |
| CN1073239C (en) | Optical device with means for preventing remaining scattered light rays from being fed back to signal line and method for fabricating it | |
| CN1238758C (en) | Variable light attenuator of micro electromechanical system | |
| JP2000009968A (en) | Photodetecting module | |
| JP2000162455A (en) | Bidirectional optical communication module, and optical communication system using same | |
| JP2004525397A (en) | Apparatus for transmitting optical signals through a planar light guide | |
| CN1194237C (en) | Optical fibre array | |
| JPS61158306A (en) | Numerical aperture convertor | |
| CN1308730A (en) | Integrated optical device providing attenuation of stray light | |
| US20020154864A1 (en) | Optical element, and optical transceiver and other optical device using the same | |
| JPH0894869A (en) | Optical waveguide module | |
| JPS60138506A (en) | Photodetecting element module | |
| US20020064343A1 (en) | Optical coupling device with anisotropic light-guiding member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |