CN102654604B - Optical filter for assisting online monitoring of FTTH (Fiber To The Home) network link and manufacturing technique thereof - Google Patents
Optical filter for assisting online monitoring of FTTH (Fiber To The Home) network link and manufacturing technique thereof Download PDFInfo
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- CN102654604B CN102654604B CN 201210140208 CN201210140208A CN102654604B CN 102654604 B CN102654604 B CN 102654604B CN 201210140208 CN201210140208 CN 201210140208 CN 201210140208 A CN201210140208 A CN 201210140208A CN 102654604 B CN102654604 B CN 102654604B
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Abstract
The invention discloses an optical filter for assisting online monitoring of an FTTH (Fiber To The Home) network link, and the optical filter comprises a metal sleeve, and a first optical fiber ceramic contact pin and a second optical fiber ceramic contact pin, which are arranged on the two ends in the metal sleeve, wherein the front end faces of the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin are inward, a first optical fiber with a covering layer and a second optical fiber with a covering layer are respectively welded on the back end faces of the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin, a polymer filter plate is arranged between the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin, an optical fiber ceramic sleeve is sleeved on the butt joint position of the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin, and a first spring and a second spring which are in a compressed state are respectively sleeved on the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin to form firm contact between the front end faces of the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin and the polymer filter plate. The optical filter disclosed by the invention does not need to be collimated by a lens, thereby greatly shortening the working procedures, facilitating automatic assembly and finally reducing the production cost.
Description
Technical field
The present invention relates to the optical-fibre communications equipment technical field, specifically a kind of optical filter spare and manufacturing process of auxiliary FTTH network link in-service monitoring.
Background technology
Fiber to the home (Fiber To The Home, FTTH) refers to ONT Optical Network Terminal (Optical network terminal, ONT) is arranged on household user or enterprise customer place.By EPON (Passive Optical Network, PON), FTTH can make a plurality of users share single optical fiber, and need not to use any active device, be the dream of the continuous pursuit of people for many years and the technique direction of exploration, but also do not obtain so far large-scale promotion and development.The various related widebands that rise at present use make have high bandwidth, the optical fiber of the good characteristics such as large capacity, low-loss becomes the inevitable choice that data is sent to the medium of client.Along with the continuous propelling of FTTH, the scale of its deployment will constantly enlarge, and the quantity of online optical cable sharply increases.Under the environment of extensive, multi-user unit, how to safeguard that the integrality of PON becomes problem in the urgent need to address.Therefore, implement the on-line monitoring and management to PON, have important practical significance.
Broadband network structure based on FTTH can provide for the user service of voice, data and image, and an important prerequisite is the integrality that will keep and monitor the FTTH network link.Optical time domain reflectometer (Optical Time Domain Reflectometer, OTDR) is by general instrument as optical network link is tested.It is the method that adopts time domain measurement, emission has the light pulse of certain width and injects tested optical fiber, then by the Rayleigh scattering returned in detection fiber and the Fresnel reflection optical signal power distribution curve along time shaft, can find out the physical characteristicss such as the length of tested optical fiber and loss, simultaneously, utilize its powerful data analysis function, can accurately locate the case point in optical fiber link and trouble spot.
In the PON framework, in the central office, PSTN (Public Switched Telephone Network, PSTN) and Internet service by optical line terminal (Optical Line Terminal, OLT) same Optical Distribution Point (Optical Distribution Point, ODP) is connected.Three wavelength (1310,1490 and 1550nm) light transmits the different information of uplink and downlink simultaneously on same optical fiber.And OTDR also have 1310,1490,1550,1625 and the available optical network link that carries out of 1650nm equiwavelength measure.Measurement for the network link integrality, focus on checking OLT to ODP, ODP unimpeded to the link of each ONU, by verifying whether correct each section fiber distance and when construction compare, simultaneously, also can form database confirms and fault point locating the quality of optical network link for being convenient in the test of operator's on-line monitoring in the future, maintenance.
OTDR is in the optical network link integrity test, if use 1310,1490 and the signal of 1550nm transmission wavelength test can cause to voice, data or the signal of video signal that is transmitting on optical-fiber network to a certain degree interference, but this problem is not also paid attention at present and is solved.
There are at present a variety of considerations to be OTDR with the optical maser wavelength of 1620nm or 1650nm, the 1310nm that need to use to avoid proper communication, 1490nm, 1550nm equiwavelength.But in the system of PON, each user side needs to increase the reflection end of a 1620nm or 1650nm, and cost is had very high requirement.
As shown in Figure 1, traditional wave filter need to incide optical fiber optical alignment out on optical filter, and then again light be converged in optical fiber, and is smaller to guarantee loss.This needs the process of 2 collimating apparatuss (being lens) and coupling, and not only operation is long, technique is many, and is difficult to robotization, and cost can't descend.
Summary of the invention
The invention provides a kind of optical filter spare and manufacturing process of auxiliary FTTH network link in-service monitoring, need not make collimation by lens, can greatly shorten operation, also can realize easily finally reducing production costs automatic assembling.
a kind of optical filter spare of auxiliary FTTH network link in-service monitoring, comprise metal sleeve, be located at the first optical fiber ceramic contact pin of end positions in described metal sleeve, the second optical fiber ceramic contact pin, the first optical fiber ceramic contact pin, the front end face of the second optical fiber ceramic contact pin inwardly, rear end face welding respectively has the first optical fiber with coating, the second optical fiber with coating, the first optical fiber ceramic contact pin, be provided with the polymkeric substance filter plate between the second optical fiber ceramic contact pin, polymkeric substance filter plate and the first optical fiber ceramic contact pin, be filled with respectively refractive index between the front end face of the second optical fiber ceramic contact pin and be 1.48 liquid filling agent, the first optical fiber ceramic contact pin, the docking location of the second optical fiber ceramic contact pin is arranged with optical fiber ceramic sleeve, the first optical fiber ceramic contact pin, be arranged with respectively the first spring that is compressive state on the second optical fiber ceramic contact pin, the second spring, make the first optical fiber ceramic contact pin, the front end face of the second optical fiber ceramic contact pin and polymkeric substance filter plate close contact.
Optical filter spare as above, the first optical fiber with coating, second other end with the optical fiber of coating are connected with respectively the first joints of optical fibre interface, the second joints of optical fibre interface.
Optical filter spare as above, the first joints of optical fibre interface, the second joints of optical fibre interface are SC type, LC type, FC type, ST type or MT-RJ type joints of optical fibre interface.
Optical filter spare as above, described liquid filling agent is ultraviolet glue or oil binder.
Optical filter spare as above, described polymkeric substance filter plate have the degree of depth and stop 1625 and the 1650nm wavelength light, efficiently see through 1310,1490 and the function of 1550nm wavelength light.
Optical filter spare as above, the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin are respectively a rod-like structure, the periphery, middle part of rod-like structure stretches out and forms a stop section, sheathed described the first spring between the stop section of the first optical fiber ceramic contact pin and end face, in described metal sleeve, an end of close the first optical fiber ceramic contact pin also is provided with and is set in first with the first perforated metal cake on the optical fiber of coating, one end of the first spring contacts with the stop section of the first optical fiber ceramic contact pin, and the other end contacts with the first perforated metal cake; Sheathed described the second spring between the stop section of the second optical fiber ceramic contact pin and end face, in described metal sleeve, an end of close the second optical fiber ceramic contact pin also is provided with and is set in second with the second perforated metal cake on the optical fiber of coating, one end of the second spring contacts with the stop section of the second optical fiber ceramic contact pin, and the other end contacts with the second perforated metal cake.
A kind of manufacturing process of optical filter spare of auxiliary FTTH network link in-service monitoring comprises the steps:
Steps A: with an end, the first perforated metal cake and first spring that penetrates successively metal sleeve with the first optical fiber with coating of the first joints of optical fibre interface;
Step B: another root is penetrated the other end, the second perforated metal cake and second spring of described metal sleeve with second of the second joints of optical fibre interface successively with the optical fiber of coating;
Step C: will be positioned at the first optical fiber ceramic contact pin of described metal sleeve, the rear end face of the second optical fiber ceramic contact pin carries out welding with the above-mentioned first optical fiber with coating, the second optical fiber with coating respectively, the front end face of the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin inwardly;
Step D: it is 1.48 liquid filling agent that the front end face of the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin is applied refractive index;
Step e:. the polymkeric substance filter plate is placed on the liquid filling agent of the first optical fiber ceramic contact pin or the coating of the second optical fiber ceramic contact pin front end face;
Step F: the first optical fiber ceramic contact pin and the second optical fiber ceramic contact pin are inserted in optical fiber ceramic sleeve, until end face arrives the centre position of optical fiber ceramic sleeve;
Step G: first, second perforated metal cake, first, second spring are moved to respectively polymkeric substance filter plate two side positions;
Step H: metal sleeve 1 is covered first, second perforated metal cake, first, second spring and the polymkeric substance filter plate that presses together, and use mould that first, second perforated metal cake, first, second spring are fixed on metal sleeve inside to the extruding of polymkeric substance filter plate center position;
Step I: respectively silica gel is injected metal sleeve two ends, after silica gel solidifies, whole optical filter spare encapsulation is completed.
Manufacturing process as above, described liquid filling agent is ultraviolet glue or oil binder.
Manufacturing process as above, described polymkeric substance filter plate have the degree of depth and stop 1625 and the 1650nm wavelength light, efficiently see through 1310,1490 and the function of 1550nm wavelength light.
Manufacturing process as above, the first joints of optical fibre interface, the second joints of optical fibre interface are SC type, LC type, FC type, ST type or MT-RJ type joints of optical fibre interface.
The present invention has following beneficial effect:
1, the non-vitreous filter element owing to adopting polymkeric substance filter plate (being the polymkeric substance filter plate), thereby the volume of making optical device after its processing is very little, can with the fiber optical transceiver integration of equipments of ONU end.
2, because device two ends joints of optical fibre interface is SC type commonly used, LC type joints of optical fibre interface etc., thereby make fibre junction more simple and efficient, be convenient to the FTTH workmen in the optical-fiber network attended operation of ONU end.
3, realize under the prerequisite of its function at assurance optical filter spare, very easily obtain and cheap optical device part (as SC type joints of optical fibre interface, wire jumper, ceramic contact pin, ceramic sleeve etc.) by buying on market, (common laborer need not professional training to adopt afterwards simple manufacturing process, the process of preparation individual devices only needs a few minutes), at present other light reflection devices of comparing, production cost is effectively reduced, and production efficiency is largely increased.
Description of drawings
Fig. 1 is the principle of work schematic diagram of prior art wave filter;
Fig. 2 is the structural representation of the optical filter spare of the auxiliary FTTH network link in-service monitoring of the present invention;
Fig. 3 is the structural representation of optical filter spare building block of the present invention;
Fig. 4 is the schematic internal view of optical filter spare of the present invention;
Principle of work schematic diagram when Fig. 5 is optical filter spare use of the present invention.
In figure: 1-metal sleeve, 2-the first optical fiber ceramic contact pin, 3-the second optical fiber ceramic contact pin, 4-first is with the optical fiber of coating, and 5-second is with the optical fiber of coating, 6-the first perforated metal cake, 7-the first spring, 8-the second perforated metal cake, 9-the second spring, 10-polymkeric substance filter plate, the 11-optical fiber ceramic sleeve, the liquid filling agent of 12-, 13-silica gel, 14-the first joints of optical fibre interface, 15-the second joints of optical fibre interface.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
please refer to Fig. 2 and Fig. 3, one of them embodiment of optical filter spare of the auxiliary FTTH network link in-service monitoring of the present invention comprises metal sleeve 1, be located at the first optical fiber ceramic contact pin 2 of described metal sleeve 1 interior end positions, the second optical fiber ceramic contact pin 3, the first optical fiber ceramic contact pin 2, the front end face of the second optical fiber ceramic contact pin 3 inwardly, rear end face welding respectively has the first optical fiber 4 with coating, the second optical fiber 5 with coating (described coating can be epoxy acrylate or polyacrylate polymers coating), the first optical fiber 4 with coating, second other end with the optical fiber 5 of coating is connected with respectively the first joints of optical fibre interface 14, the second joints of optical fibre interface 15.Be provided with polymkeric substance filter plate 10 between the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3, polymkeric substance filter plate 10 can be located on the front end face of the first optical fiber ceramic contact pin 2 or the second optical fiber ceramic contact pin 3.The docking location of the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 is arranged with optical fiber ceramic sleeve 11, be arranged with respectively the first spring 7, the second spring 9 that are compressive state on the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3, make front end face and polymkeric substance filter plate 10 close contacts of the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3.Better, described metal sleeve 1 is stainless steel sleeve or alloy material sleeve.
Please further with reference to figure 4, in an embodiment of the present invention, be filled with respectively refractive index between the front end face of polymkeric substance filter plate 10 and the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 and be 1.48 liquid filling agent 12, for example refractive index is 1.48 ultraviolet glue or oil binder.
In an embodiment of the present invention, the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 are respectively a rod-like structure, the periphery, middle part of rod-like structure stretches out and forms a stop section, sheathed described the first spring 7 between the stop section of the first optical fiber ceramic contact pin 2 and end face, the interior end near the first optical fiber ceramic contact pin 2 of described metal sleeve 1 also is provided with and is set in first with the first perforated metal cake 6 on the optical fiber 4 of coating, one end of the first spring 7 contacts with the stop section of the first optical fiber ceramic contact pin 2, and the other end contacts with the first perforated metal cake 6; Same, sheathed described the second spring 9 between the stop section of the second optical fiber ceramic contact pin 3 and end face, the interior end near the second optical fiber ceramic contact pin 3 of described metal sleeve 1 also is provided with and is set in second with the second perforated metal cake 8 on the optical fiber 5 of coating, one end of the second spring 9 contacts with the stop section of the second optical fiber ceramic contact pin 3, and the other end contacts with the second perforated metal cake 8.
When encapsulation, can use mould that two perforated metal cakes (the first perforated metal cake 6, the second perforated metal cake 8), two springs (the first spring 7, the second spring 9) are fixed on metal sleeve inside to the 10 center positions extruding of polymkeric substance filter plate, guarantee that two perforated metal cakes and two springs have certain extruding force to the inside to two optical fiber ceramic contact pins (the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3), then respectively silica gel 13 is injected the two ends of metal sleeve 1, wait silica gel solidifies, and whole optical filter spare encapsulation is completed.
In embodiments of the present invention, described polymkeric substance filter plate 10 has the degree of depth and stops 1625 and the 1650nm wavelength light, efficiently sees through 1310,1490 and the function of 1550nm wavelength light.
In embodiments of the present invention, the first joints of optical fibre interface 14, the second joints of optical fibre interface 15 are SC type joints of optical fibre interfaces, also can be in other embodiments LC type, FC type, ST type or MT-RJ type joints of optical fibre interface, particular type is selected according to actual needs.
During use, the optical fiber of being introduced ONU by ODP is connected with the joints of optical fibre interface (the first joints of optical fibre interface 14 or the second joints of optical fibre interface 15) of described optical filter one end, and the joints of optical fibre interface of the described optical filter other end is connected with ONU.
As shown in Figure 5, because optical filter volume of the present invention greatly reduces, thereby also can directly as plug-in unit, it be integrated in the ONU device interior, and it has high permeability, high-isolation, low Polarization Dependent Loss, low temperature impact, the characteristics such as stable and reliable for performance.Therefore, wavelength (1625 or 1650nm) is when light is tested the optical network link integrality outside OTDR uses band online, in the transmission situation of not disturbing PON real-time online data, by the contrast test result and the result of preserving during PON sets up, fault is positioned.
The embodiment of the present invention also provides a kind of manufacturing process of optical filter spare of auxiliary FTTH network link in-service monitoring, comprises the steps:
Steps A: with an end, the first perforated metal cake 6 and first spring 7 that penetrates successively metal sleeve 1 with the first optical fiber 4 with coating of the first joints of optical fibre interface 14;
Step B: another root is penetrated the other end, the second perforated metal cake 8 and second spring 9 of described metal sleeve 1 with second of the second joints of optical fibre interface 15 successively with the optical fiber 5 of coating; Wherein the first joints of optical fibre interface 14, the second joints of optical fibre interface 15 are SC type, LC type, FC type, ST type or MT-RJ type joints of optical fibre interface.
Step C: will be positioned at the first optical fiber ceramic contact pin 2 of described metal sleeve 1, the rear end face of the second optical fiber ceramic contact pin 3 carries out welding with the above-mentioned first optical fiber 4 with coating, the second optical fiber 5 with coating respectively, the front end face of the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 inwardly;
Step D: it is 1.48 liquid filling agent 12 that the front end face of the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 is applied refractive index, and for example refractive index is 1.48 ultraviolet glue or oil binder;
Step e: polymkeric substance filter plate 10 is placed on the liquid filling agent 12 of the first optical fiber ceramic contact pin 2 or the second optical fiber ceramic contact pin 3 front end faces coatings, described polymkeric substance filter plate 10 has the degree of depth and stops 1625 and the 1650nm wavelength light, efficiently sees through 1310,1490 and the function of 1550nm wavelength light;
Step F: the first optical fiber ceramic contact pin 2 and the second optical fiber ceramic contact pin 3 are inserted in optical fiber ceramic sleeve 11, until end face arrives the centre position of optical fiber ceramic sleeve 11;
Step G: first, second perforated metal cake (6,8), first, second spring (7,9) are moved to respectively 10 liang of side positions of polymkeric substance filter plate;
Step H: metal sleeve 1 is covered first, second perforated metal cake (6,8), first, second spring (7,9) and the polymkeric substance filter plate 10 that presses together, and use mould that first, second perforated metal cake (6,8), first, second spring (7,9) are fixed on metal sleeve 1 inside to the 10 center positions extruding of polymkeric substance filter plate, guarantee that two perforated metal cakes and two springs have certain extruding force to the inside to two optical fiber ceramic contact pins;
Step I: respectively silica gel 13 is injected metal sleeve 1 two ends, after silica gel 13 solidifies, whole optical filter spares encapsulation is completed.
The device parts that the present invention relates to are very universal on market, and purchase cost is lower; Manufacturing process is also very simple, need not the cooperation of large-scale machine production equipment; Artificial production cost is less with respect to prior art; Aspect production capacity, the present invention uses the efficient of producing manually, efficient with production of machinery is compared, in the situation that production capacity is not requirement is very high, there is no very large difference and (remove the time of waiting for that silica gel solidifies, the manually-operated of producing at present single product only needs less than 1 minute, can satisfy the demand of present production capacity).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. the optical filter spare of an auxiliary FTTH network link in-service monitoring, comprise metal sleeve (1), be located at the first optical fiber ceramic contact pin (2) of the interior end positions of described metal sleeve (1), the second optical fiber ceramic contact pin (3), the first optical fiber ceramic contact pin (2), the front end face of the second optical fiber ceramic contact pin (3) inwardly, rear end face welding respectively has the first optical fiber with coating (4), the second optical fiber with coating (5), it is characterized in that: the first optical fiber ceramic contact pin (2), be provided with polymkeric substance filter plate (10) between the second optical fiber ceramic contact pin (3), polymkeric substance filter plate (10) and the first optical fiber ceramic contact pin (2), be filled with respectively refractive index between the front end face of the second optical fiber ceramic contact pin (3) and be 1.48 liquid filling agent (12), the first optical fiber ceramic contact pin (2), the docking location of the second optical fiber ceramic contact pin (3) is arranged with optical fiber ceramic sleeve (11), the first optical fiber ceramic contact pin (2), be arranged with respectively the first spring (7) that is compressive state on the second optical fiber ceramic contact pin (3), the second spring (9), make the first optical fiber ceramic contact pin (2), the front end face of the second optical fiber ceramic contact pin (3) and polymkeric substance filter plate (10) close contact, the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) is respectively a rod-like structure, the periphery, middle part of rod-like structure stretches out and forms a stop section, sheathed described the first spring (7) between the stop section of the first optical fiber ceramic contact pin (2) and end face, an end near the first optical fiber ceramic contact pin (2) in described metal sleeve (1) also is provided with the first perforated metal cake (6) that is set on the first optical fiber with coating (4), one end of the first spring (7) contacts with the stop section of the first optical fiber ceramic contact pin (2), the other end contacts with the first perforated metal cake (6), sheathed described the second spring (9) between the stop section of the second optical fiber ceramic contact pin (3) and end face, an end near the second optical fiber ceramic contact pin (3) in described metal sleeve (1) also is provided with the second perforated metal cake (8) that is set on the second optical fiber with coating (5), one end of the second spring (9) contacts with the stop section of the second optical fiber ceramic contact pin (3), and the other end contacts with the second perforated metal cake (8).
2. the optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 1, it is characterized in that: the other end of the first optical fiber with coating (4), the second optical fiber with coating (5) is connected with respectively the first joints of optical fibre interface (14), the second joints of optical fibre interface (15).
3. the optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 2 is characterized in that: the first joints of optical fibre interface (14), the second joints of optical fibre interface (15) are SC type, LC type, FC type, ST type or MT-RJ type joints of optical fibre interface.
4. the optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 1, it is characterized in that: described liquid filling agent (12) is ultraviolet glue or oil binder.
5. the optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 1, it is characterized in that: described polymkeric substance filter plate (10) has the degree of depth and stops 1625 and the 1650nm wavelength light, efficiently sees through 1310,1490 and the function of 1550nm wavelength light.
6. the manufacturing process of the optical filter spare of an auxiliary FTTH network link in-service monitoring, is characterized in that comprising the steps:
Steps A: with an end, the first perforated metal cake (6) and first spring (7) that penetrates successively metal sleeve (1) with first optical fiber with coating (4) of the first joints of optical fibre interface (14);
Step B: another root is penetrated successively the other end, the second perforated metal cake (8) and second spring (9) of described metal sleeve (1) with second optical fiber with coating (5) of the second joints of optical fibre interface (15);
Step C: will be positioned at the first optical fiber ceramic contact pin (2) of described metal sleeve (1), the rear end face of the second optical fiber ceramic contact pin (3) carries out welding with the above-mentioned first optical fiber with coating (4), the second optical fiber with coating (5) respectively, the front end face of the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) inwardly;
Step D: it is 1.48 liquid filling agent (12) that the front end face of the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) is applied refractive index;
Step e: polymkeric substance filter plate (10) is placed on the liquid filling agent (12) of the first optical fiber ceramic contact pin (2) or the coating of the second optical fiber ceramic contact pin (3) front end face;
Step F: the first optical fiber ceramic contact pin (2) and the second optical fiber ceramic contact pin (3) are inserted in optical fiber ceramic sleeve (11), until end face arrives the centre position of optical fiber ceramic sleeve (11);
Step G: first, second perforated metal cake (6,8), first, second spring (7,9) are moved to respectively polymkeric substance filter plate (10) two side positions;
Step H: metal sleeve 1 is covered first, second perforated metal cake (6,8), first, second spring (7,9) and the polymkeric substance filter plate (10) that presses together, and use mould that first, second perforated metal cake (6,8), first, second spring (7,9) are fixed on metal sleeve (1) inside to the extruding of polymkeric substance filter plate (10) center position;
Step I: respectively with silica gel (13) injection metal sleeve (1) two ends, after silica gel (13) solidifies, whole optical filter spare encapsulation is completed.
7. manufacturing process as claimed in claim 6, it is characterized in that: described liquid filling agent (12) is ultraviolet glue or oil binder.
8. manufacturing process as claimed in claim 6 is characterized in that: described polymkeric substance filter plate (10) has the degree of depth and stops 1625 and the 1650nm wavelength light, efficiently sees through 1310,1490 and the function of 1550nm wavelength light.
9. manufacturing process as claimed in claim 6 is characterized in that: the first joints of optical fibre interface (14), the second joints of optical fibre interface (15) are SC type, LC type, FC type, ST type or MT-RJ type joints of optical fibre interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210140208 CN102654604B (en) | 2012-05-08 | 2012-05-08 | Optical filter for assisting online monitoring of FTTH (Fiber To The Home) network link and manufacturing technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210140208 CN102654604B (en) | 2012-05-08 | 2012-05-08 | Optical filter for assisting online monitoring of FTTH (Fiber To The Home) network link and manufacturing technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102654604A CN102654604A (en) | 2012-09-05 |
| CN102654604B true CN102654604B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210140208 Active CN102654604B (en) | 2012-05-08 | 2012-05-08 | Optical filter for assisting online monitoring of FTTH (Fiber To The Home) network link and manufacturing technique thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033272A (en) * | 2011-01-06 | 2011-04-27 | 苏州天孚精密陶瓷有限公司 | Subminiature optical fiber connector with isolator |
| CN202177726U (en) * | 2011-08-08 | 2012-03-28 | 上海光城邮电通信设备有限公司 | Male-female optical attenuator |
| CN202563121U (en) * | 2012-05-08 | 2012-11-28 | 王辉文 | Optical filter device for assisting FTTH network link on-line monitoring |
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| JP2005352035A (en) * | 2004-06-09 | 2005-12-22 | Fujikura Ltd | Optical multiplexer/demultiplexer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033272A (en) * | 2011-01-06 | 2011-04-27 | 苏州天孚精密陶瓷有限公司 | Subminiature optical fiber connector with isolator |
| CN202177726U (en) * | 2011-08-08 | 2012-03-28 | 上海光城邮电通信设备有限公司 | Male-female optical attenuator |
| CN202563121U (en) * | 2012-05-08 | 2012-11-28 | 王辉文 | Optical filter device for assisting FTTH network link on-line monitoring |
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| JP特开2005-352035A 2005.12.22 |
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