CN205280973U - A optic fibre filtering structure for optical communication - Google Patents
A optic fibre filtering structure for optical communication Download PDFInfo
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- CN205280973U CN205280973U CN201520721512.7U CN201520721512U CN205280973U CN 205280973 U CN205280973 U CN 205280973U CN 201520721512 U CN201520721512 U CN 201520721512U CN 205280973 U CN205280973 U CN 205280973U
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Abstract
The utility model provides an optic fibre filtering structure for optical communication, including communication optical fiber, plated the optical filtering rete on communication optical fiber's the transmitting terminal terminal surface, the optical filtering rete is two -layer including alternative deposit at optic fibre transmitter side's ge rete and znS rete, ge rete, and the znS rete is the three -layer, and the superiors of optical filtering rete are the znS rete, still are equipped with anti -reflection rete on the printing opacity rete, and anti -reflection rete includes a siO2 rete and a mgF2 rete, siO2 rete deposit is in on the printing opacity rete, mgF2 rete deposit is in on the siO2 rete. The glass substrate that this light communication optical fiber filtering structure saved directly will filter the rete sputter on the terminal surface of communication optical fiber transmitting terminal, so not only can effectively reduce the volume of optical communication device, can improve the luminousness of optical communication device in addition, can reach more than 96% at the light transmission luminosity between the 500 -1200nm the wavelength according to this light filter of measuring.
Description
Technical field
The utility model relates to optical communication field, in particular to a kind of optical fiber filter structure for optical communication.
Background technology
Optical communication refers to the signalling methods realized using light as information carrier, can be divided into atmospheric laser communication and opticfiber communication two kinds by the difference of transmission medium. Optical communication has the advantages such as message capacity is big, transmission range length, electromagnetism interference, transmission quality are good, signal crosstalk is little, good confidentiality, is the ultimate aim of future transmission network development, has very wide market outlook. Optical communication is that the recovery of different wave length is used in an optical fiber by opticcoupler or optical multiplexer, different wavelength postings different information, it is used to carry out wavelength chooses by optical filter at receiving end, required wavelength is picked out, and the light except this wavelength will be rejected and passes through from numerous wavelength.
In optical communication product, the major parts of optical filter is spectral filter, and it is important that spectral filter plays a part to cause pass in optical communication product. Along with developing rapidly of space technology and optics, the application of infrared optical system is more and more paid attention to, optical signal signal has to pass through the filtering that spectral filter, protection window etc. carry out Time and place, this just requires that light is transmitting with maximum value as much as possible by its radiation quantity during spectral filter, so just needs be coated with the film meeting requirement on spectral filter according to different requirements. In the prior art, in order to increase transmittance, it usually needs be coated with the rete of different thickness on spectral filter. Along with signal equipment constantly develops to the direction of miniaturization, miniatureization, the volume how reducing device becomes a lot of device fabrication producer and needs the technical problem to be solved badly. Some manufacturer by plated film direct plating on film, directly film is opened from plated film in use, coatings is used as spectral filter, although adopting the volume that can reduce device in this way to a certain extent, but this kind of coatings insufficient strength, be very easy to damage, therefore and impracticable.
Practical novel content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of without the need to using spectral filter just can carry out the optical fiber structure of filtering.
For achieving the above object and other relevant objects, the utility model provides a kind of optical fiber filter structure for optical communication, comprise telecommunication optical fiber, described telecommunication optical fiber is fixed on mount pad, the transmitting end end face of described telecommunication optical fiber is coated with filter membranous layer, described filter membranous layer comprises Ge rete and the ZnS rete that alternating deposit launches end face at optical fiber, described Ge rete is two layers, ZnS rete is three layers, the superiors of described filter membranous layer are ZnS rete, also being provided with antireflective coating on described light-transmissive film layer, described antireflective coating comprises a SiO2Rete and a MgF2Rete, described SiO2Film deposition on described light-transmissive film layer, described MgF2Film deposition is at described SiO2On rete.
Preferably, one layer of silicon nitride layer containing silica nano material also it is provided with between the transmitting end end face of described filter membranous layer and described telecommunication optical fiber.
Preferably, the thickness of described silicon nitride layer is 35-72nm.
Preferably, from inside to outside, the first layer ZnS thicknesses of layers is 102-105nm to described filter membranous layer, the first layer Ge thicknesses of layers is 345-350nm, second layer ZnS thicknesses of layers is 153-157.5nm, and second layer Ge thicknesses of layers is 690-700nm, and third layer ZnS thicknesses of layers is 204-210nm.
Preferably, described SiO2Thicknesses of layers is 125-126nm, MgF2Thicknesses of layers is 49-51nm.
Preferably, described antireflective coating being also provided with one layer of diamond crystal rete, described diamond crystal thicknesses of layers is 78-79nm.
The disclosed optical fiber filter structure for optical communication of the utility model has following useful effect: the glass substrate that this optical communication fiber filter structure saves, directly filter membranous layer is spattered on the end face being plated in telecommunication optical fiber transmitting end, so not only can effectively reduce the volume of optical communication device, and the transmittance of optical communication device can be improved, according to this spectral filter of detection, the light transparence of wavelength between 500-1200nm can be reached more than 96%; On antireflective coating, also it is provided with diamond crystal rete simultaneously, optical fiber can be made like this to have extremely high hardness and good physical strength, resistance to acids and bases very good, not easily deliquescence, can using under various evil slightly environment, this optical fiber filter structure coating layers is less, and technique is simple, while improving transmittance, effectively reduce production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of the utility model embodiment communication relation end face coating.
Fig. 3 is the performance chart of the utility model embodiment transmittance.
Element numbers explanation
1, optical fiber 11, launch end end face 110, silicon nitride layer 111, the first layer ZnS rete 112, the first layer Ge rete 113, second layer ZnS rete 114, second layer Ge rete 115, third layer ZnS rete 116, SiO2Rete 117, MgF2Rete 118, diamond crystal rete 2, mount pad.
Embodiment
By particular specific embodiment, enforcement mode of the present utility model being described below, person skilled in the art scholar the content disclosed by this specification sheets can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Fig. 3. Notice, structure that this specification sheets institute accompanying drawings illustrates, ratio, size etc., all only content in order to coordinate specification sheets to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore do not have an essential meaning in technology, the adjustment of the modification of any structure, the change of proportionlity or size, do not affecting under effect that the utility model can produce and the object that can reach, all should still drop on the technology contents that the utility model discloses and obtain in the scope that can contain. Simultaneously, this specification sheets is quoted as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and it is not used to limit the enforceable scope of the utility model, the change of its relative relation or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As shown in Figure 1, 2, the utility model provides a kind of optical fiber filter structure for optical communication, and it comprises telecommunication optical fiber 1, and for the ease of installing, telecommunication optical fiber 1 is fixed on mount pad 2, and mount pad 2 is arranged on the box body of communication component. Filter construction different from original structure is different, directly launches at telecommunication optical fiber 1 at wave filter and is coated with filter membranous layer on end end face 11, and does not arrange spectral filter. In order to increase sticking power, before spattering plating filter membranous layer, one layer of silicon nitride layer 110 containing silica nano material can be first first set on transmitting end end face 11, the thickness of silicon nitride layer 110 is not easily excessive also not easily excessively little, cross conference and affect transmittance, crossing little, do not have the effect increasing sticking power, as a kind of optimal way, the thickness of the silicon nitride layer 110 of silica nano material can be arranged between 35-72nm.
Filter membranous layer is arranged on silicon nitride layer 110, and filter membranous layer comprises Ge rete and the ZnS rete that alternating deposit launches end face at optical fiber, and wherein Ge rete is two layers, ZnS rete is three layers, the superiors of filter membranous layer are ZnS rete, and light-transmissive film layer is also provided with antireflective coating, and antireflective coating comprises a SiO2Rete and a MgF2Rete, SiO2Film deposition on described light-transmissive film layer, MgF2Film deposition is at SiO2On rete.
As a kind of embodiment, filter membranous layer is from inside to outside, the first layer ZnS rete 111 thickness is 102-105nm, the first layer Ge rete 112 thickness is 345-350nm, second layer ZnS rete 113 thickness is 153-157.5nm, second layer Ge rete 114 thickness is 690-700nm, and third layer ZnS rete 115 thickness is 204-210nm, SiO2Rete 116 thickness is 125-126nm, MgF2Rete 117 thickness is 49-51nm. In order to increase the intensity of filter membranous layer, being also provided with one layer of diamond crystal rete 118 on antireflective coating, diamond crystal rete 118 thickness is 78-79nm. The specific refractory power of hard rock crystalline film 4 and SiO2The specific refractory power of rete is identical, therefore can not affect the transmittance of spectral filter, can effectively increase hardness and the physical strength of fiber end face simultaneously, and therefore resistance to acids and bases is better, not easily deliquescence, it is possible to use under various evil slightly environment.
The glass substrate that this optical communication fiber filter structure saves, directly filter membranous layer is spattered on the end face being plated in telecommunication optical fiber transmitting end, so not only can effectively reduce the volume of optical communication device, and the transmittance of optical communication device can be improved, according to this spectral filter of detection, the light transparence of wavelength between 500-1200nm can be reached for more than 96% (as shown in Figure 3); On antireflective coating, also it is provided with diamond crystal rete simultaneously, optical fiber can be made like this to have extremely high hardness and good physical strength, resistance to acids and bases very good, not easily deliquescence, can using under various evil slightly environment, this optical fiber filter structure coating layers is less, and technique is simple, while improving transmittance, effectively reduce production cost. So, the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model. Above-described embodiment all not running counter under spirit of the present utility model and category, can be modified or change by any person skilled in the art scholar. Therefore, in art, tool usually intellectual modifies or changes not departing under the spirit and technological thought that the utility model discloses all equivalences completed such as, must be contained by claim of the present utility model.
Claims (6)
1. the optical fiber filter structure for optical communication, comprise telecommunication optical fiber, described telecommunication optical fiber is fixed on mount pad, it is characterized in that: be coated with filter membranous layer on the transmitting end end face of described telecommunication optical fiber, described filter membranous layer comprises Ge rete and the ZnS rete that alternating deposit launches end face at optical fiber, and described Ge rete is two layers, ZnS rete is three layers, the superiors of described filter membranous layer are ZnS rete, and described filter membranous layer is also provided with antireflective coating, and described antireflective coating comprises a SiO2Rete and a MgF2Rete, described SiO2Film deposition on described filter membranous layer, described MgF2Film deposition is at described SiO2On rete.
2. the optical fiber filter structure for optical communication according to claim 1, it is characterised in that: also it is provided with one layer of silicon nitride layer between the transmitting end end face of described filter membranous layer and described telecommunication optical fiber.
3. the optical fiber filter structure for optical communication according to claim 2, it is characterised in that: the thickness of described silicon nitride layer is 35-72nm.
4. the optical fiber filter structure for optical communication according to claim 1, it is characterized in that: described filter membranous layer is from inside to outside, the first layer ZnS thicknesses of layers is 102-105nm, the first layer Ge thicknesses of layers is 345-350nm, second layer ZnS thicknesses of layers is 153-157.5nm, second layer Ge thicknesses of layers is 690-700nm, and third layer ZnS thicknesses of layers is 204-210nm.
5. the optical fiber filter structure for optical communication according to claim 1, it is characterised in that: described SiO2Thicknesses of layers is 125-126nm, MgF2Thicknesses of layers is 49-51nm.
6. the optical fiber filter structure for optical communication according to claim 1, it is characterised in that: being also provided with one layer of diamond crystal rete on described antireflective coating, described diamond crystal thicknesses of layers is 78-79nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520721512.7U CN205280973U (en) | 2015-09-17 | 2015-09-17 | A optic fibre filtering structure for optical communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520721512.7U CN205280973U (en) | 2015-09-17 | 2015-09-17 | A optic fibre filtering structure for optical communication |
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| CN205280973U true CN205280973U (en) | 2016-06-01 |
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| CN201520721512.7U Expired - Fee Related CN205280973U (en) | 2015-09-17 | 2015-09-17 | A optic fibre filtering structure for optical communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068188A (en) * | 2015-09-17 | 2015-11-18 | 苏州鼎旺科技有限公司 | Optical fiber filter structure for optical communication |
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2015
- 2015-09-17 CN CN201520721512.7U patent/CN205280973U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068188A (en) * | 2015-09-17 | 2015-11-18 | 苏州鼎旺科技有限公司 | Optical fiber filter structure for optical communication |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20160917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |