CN102654604A - 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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- CN102654604A CN102654604A CN2012101402084A CN201210140208A CN102654604A CN 102654604 A CN102654604 A CN 102654604A CN 2012101402084 A CN2012101402084 A CN 2012101402084A CN 201210140208 A CN201210140208 A CN 201210140208A CN 102654604 A CN102654604 A CN 102654604A
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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 is a kind of optical filter spare and manufacturing process of auxiliary FTTH network link in-service monitoring.
Background technology
Fiber to the home, and (Fiber To The Home FTTH) is meant that (Optical network terminal ONT) is installed in household user or enterprise customer place with ONT Optical Network Terminal.Through 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 large-scale promotion and development so far.The various related widebands that risen are at present used and are made the optical fiber with good characteristics such as high bandwidth, high capacity, low-losses become 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 the problem that presses for solution.Therefore, implement on-line monitoring and management, have important practical significance PON.
Based on the broadband network structure of FTTH the service of voice, data and image can be provided for the user, an important prerequisite is the integrality that will keep and monitor the FTTH network link.Optical time domain reflectometer (Optical Time Domain Reflectometer, the instrument of OTDR) optical network link being tested by general conduct.It is the method that adopts time domain measurement; Emission has the light pulse of certain width and injects tested optical fiber; Then through the Rayleigh scattering returned in the detection fiber and Fresnel reflection optical signal power distribution curve, can find out the physical characteristics such as length and loss of tested optical fiber, simultaneously along time shaft; Utilize its powerful data analysis function, can accurately locate case point in the optical fiber link and trouble spot.
In the PON framework; In the central office, and PSTN (Public Switched Telephone Network, PSTN) optical line terminal (Optical Line Terminal is passed through in service with Internet; OLT) (Optical Distribution Point's same Optical Distribution Point ODP) links to each other.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 to the network link integrality; It is unimpeded to the link of each ONU to focus on checking OLT to ODP, ODP; Whether correctly the time compare through verifying each section fiber distance and construction; Simultaneously, also can form database confirms and the breakpoint location the quality of optical network link for being convenient in the test of operator's on-line monitoring in the future, the maintenance.
OTDR is in the optical network link integrity test; If use 1310,1490 and the signal of 1550nm transmission wavelength test then can cause interference to a certain degree voice, data or the signal of video signal that is transmitting on the optical-fiber network, but this problem does not also obtain paying attention to and solving at present.
There are a variety of considerations to use the optical maser wavelength of 1620nm or 1650nm to be OTDR at present, to avoid the 1310nm that proper communication need be used, 1490nm, 1550nm equiwavelength.But in the system of PON, each user side all need increase the reflection end of a 1620nm or 1650nm, and cost is had very high requirement.
Optical alignment as shown in Figure 1, that traditional wave filter need come out optical fiber incides on the optical filter, and then again optical convergence in optical fiber, less to guarantee loss ratio.This needs the process of 2 collimating apparatuss (being lens) and coupling, and not only operation is long, technology is many, and is difficult to robotization, and cost can't descend.
Summary of the invention
The present 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 shorten operation greatly, also can realize the robotization assembling easily, finally reduces production costs.
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, the second optical fiber ceramic contact pin of end positions in the said metal sleeve; The front end face of the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin inwardly; Rear end face welding respectively has the optical fiber of the first band coating, the optical fiber of the second band coating; Be provided with the polymkeric substance filter plate between the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin; Be filled with refractive index between the front end face of the polymkeric substance filter plate and the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin respectively and be 1.48 liquid filling agent; The docking location of the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin is arranged with the optical fiber ceramic sleeve, is arranged with first spring, second spring that is compressive state on the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin respectively, and the front end face of the optical fiber ceramic contact pin of winning, the second optical fiber ceramic contact pin is closely contacted with the polymkeric substance filter plate.
Aforesaid optical filter spare, the other end of the optical fiber of the optical fiber of the first band coating, the second band coating is connected with first joints of optical fibre interface, second joints of optical fibre interface respectively.
Aforesaid optical filter spare, first joints of optical fibre interface, second joints of optical fibre interface are SC type, LC type, FC type, ST type or MT-RJ type joints of optical fibre interface.
Aforesaid optical filter spare, said liquid filling agent is ultraviolet glue or oil binder.
Aforesaid optical filter spare, said 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.
Aforesaid optical filter spare; 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 said first spring between the stop section of the first optical fiber ceramic contact pin and the end face; End near the first optical fiber ceramic contact pin in the said metal sleeve also is provided with the first perforated metal cake on the optical fiber that is set in the first band coating, and an end of 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 said second spring between the stop section of the second optical fiber ceramic contact pin and the end face; End near the second optical fiber ceramic contact pin in the said metal sleeve also is provided with the second perforated metal cake on the optical fiber that is set in the second band coating; One end of 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: have first of first joints of optical fibre interface with one and be with the optical fiber of coating to penetrate an end, the first perforated metal cake and first spring of metal sleeve successively;
Step B: another root is had second of second joints of optical fibre interface be with the optical fiber of coating to penetrate the other end, the second perforated metal cake and second spring of said metal sleeve successively;
Step C: the rear end face that will be positioned at the first optical fiber ceramic contact pin, the second optical fiber ceramic contact pin of said metal sleeve carries out welding with the optical fiber of the above-mentioned first band coating, the optical fiber of the second band coating respectively, and 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 the optical fiber ceramic sleeve, arrive the centre position of optical fiber ceramic sleeve until end face;
Step G: first, second perforated metal cake, first, second spring are moved to polymkeric substance filter plate two side positions respectively;
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 the metal sleeve two ends, silica gel solidifies back overall optical filtering device encapsulation to be accomplished.
Aforesaid manufacturing process, said liquid filling agent is ultraviolet glue or oil binder.
Aforesaid manufacturing process, said 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.
Aforesaid manufacturing process, first joints of optical fibre interface, 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 adopt polymkeric substance filter plate (being the polymkeric substance filter plate), thereby the volume of processing optical device after its processing is very little, can with the fiber optical transceiver equipment integration 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 optical-fiber network attended operation of FTTH workmen at the ONU end.
3, under the prerequisite that guarantees its function of optical filter spare realization; Very easily obtain and cheap optical device part (like SC type joints of optical fibre interface, wire jumper, ceramic contact pin, ceramic sleeve or the like) through buying on the market; Adopt simple manufacturing process (common laborer need not professional training, and the process of preparation individual devices only needs a few minutes) afterwards, other light reflection devices at present of comparing; Production cost is effectively reduced, and production efficiency is largely increased.
Description of drawings
Fig. 1 is the principle of work synoptic 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;
Fig. 5 is an optical filter spare of the present invention principle of work synoptic diagram when using.
Among the figure: 1-metal sleeve, the 2-first optical fiber ceramic contact pin, the 3-second optical fiber ceramic contact pin, the optical fiber of the 4-first band coating; The optical fiber of the 5-second band coating, the 6-first perforated metal cake, 7-first spring, the 8-second perforated metal cake; 9-second spring, 10-polymkeric substance filter plate, 11-optical fiber ceramic sleeve, the liquid filling agent of 12-; 13-silica gel, 14-first joints of optical fibre interface, 15-second joints of optical fibre interface.
Embodiment
To combine the accompanying drawing among the present invention below, the technical scheme among the present invention will be carried out clear, intactly description.
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, the second optical fiber ceramic contact pin 3 of end positions in the said metal sleeve 1; The front end face of the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 inwardly; Rear end face welding respectively has the optical fiber 4 of the first band coating, the optical fiber 5 (said coating can be epoxy acrylate or polyacrylate polymers coating) of the second band coating, and the other end of the optical fiber 4 of the first band coating, the optical fiber 5 of the second band coating is connected with first joints of optical fibre interface 14, second joints of optical fibre interface 15 respectively.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 first spring 7, second spring 9 that are compressive state on the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 respectively, the front end face of win optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 is closely contacted with polymkeric substance filter plate 10.Preferable, said 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 refractive index between the front end face of the polymkeric substance filter plate 10 and the first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3 respectively 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 said first spring 7 between the stop section of the first optical fiber ceramic contact pin 2 and the end face; The end that said metal sleeve 1 an interior end near the first optical fiber ceramic contact pin 2 also is provided with the first perforated metal cake, 6, the first springs 7 on the optical fiber 4 that is set in the first band coating 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 said second spring 9 between the stop section of the second optical fiber ceramic contact pin 3 and the end face; End near the second optical fiber ceramic contact pin 3 in the said metal sleeve 1 also is provided with the second perforated metal cake 8 on the optical fiber 5 that is set in the second band coating; One end of 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 (first perforated metal cake 6, the second perforated metal cake 8), two springs (first spring 7, second spring 9) are fixed on metal sleeve inside to the extruding of polymkeric substance filter plate 10 center positions; Guarantee that two perforated metal cakes and two springs have certain extruding force to the inside to two optical fiber ceramic contact pins (first optical fiber ceramic contact pin 2, the second optical fiber ceramic contact pin 3); Respectively silica gel 13 is injected the two ends of metal sleeve 1 then; Wait silica gel solidifies, and the encapsulation of overall optical filtering device is accomplished.
In embodiments of the present invention, said 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; First joints of optical fibre interface 14, second joints of optical fibre interface 15 are SC type joints of optical fibre interfaces; Also can be LC type, FC type, ST type or MT-RJ type joints of optical fibre interface in other embodiments, 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 (first joints of optical fibre interface 14 or second joints of optical fibre interface 15) of said optical filter one end, and the joints of optical fibre interface of the said 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 influence, characteristics such as stable and reliable for performance.Therefore; Wavelength outside the online use band of OTDR (1625 or 1650nm) is when light is tested the optical network link integrality; Under the transmission situation of not disturbing PON real-time online data, through the contrast test result and the result who is preserved during PON sets up, fault is positioned.
The embodiment of the 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: have first of first joints of optical fibre interface 14 with one and be with the optical fiber 4 of coating to penetrate an end, the first perforated metal cake 6 and first spring 7 of metal sleeve 1 successively;
Step B: another root is had second of second joints of optical fibre interface 15 be with the optical fiber 5 of coating to penetrate the other end, the second perforated metal cake 8 and second spring 9 of said metal sleeve 1 successively; Wherein first joints of optical fibre interface 14, 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 said metal sleeve 1, the rear end face of the second optical fiber ceramic contact pin 3 carries out welding with the optical fiber 4 of the above-mentioned first band coating, the optical fiber 5 of the second band 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 coating of the second optical fiber ceramic contact pin, 3 front end faces; Said 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 the optical fiber ceramic sleeve 11, arrive the centre position of optical fiber ceramic sleeve 11 until end face;
Step G: first, second perforated metal cake (6,8), first, second spring (7,9) are moved to 10 liang of side positions of polymkeric substance filter plate respectively;
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 positions, 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, silica gel 13 solidifies back overall optical filtering device encapsulation to be accomplished.
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, and is not under the very high situation of requirement in production capacity, does not have very big difference and (removes the time of waiting for that silica gel solidifies; The manually-operated of producing single product at present only needs can satisfy the demand of present production capacity less than 1 minute).
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who belongs to the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within 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 (10)
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), the second optical fiber ceramic contact pin (3) of the interior end positions of said metal sleeve (1); The front end face of the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) inwardly; Rear end face welding respectively has the optical fiber (4) of the first band coating, the optical fiber (5) of the second band coating; It is characterized in that: 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); Be filled with refractive index between the front end face of the polymkeric substance filter plate (10) and the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) respectively and be 1.48 liquid filling agent (12); 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 first spring (7), second spring (9) that is compressive state on the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) respectively, the front end face of the optical fiber ceramic contact pin (2) of winning, the second optical fiber ceramic contact pin (3) is closely contacted with polymkeric substance filter plate (10).
2. the optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 1 is characterized in that: the other end of the optical fiber (5) of the optical fiber (4) of the first band coating, the second band coating is connected with first joints of optical fibre interface (14), second joints of optical fibre interface (15) respectively.
3. the optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 2 is characterized in that: first joints of optical fibre interface (14), 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 is characterized in that: said 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 is characterized in that: said 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 optical filter spare of auxiliary FTTH network link in-service monitoring as claimed in claim 1; It is characterized in that: 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 said first spring (7) between the stop section of the first optical fiber ceramic contact pin (2) and the end face; End near the first optical fiber ceramic contact pin (2) in the said metal sleeve (1) also is provided with the first perforated metal cake (6) on the optical fiber (4) that is set in the first band coating; One end of 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); Sheathed said second spring (9) between the stop section of the second optical fiber ceramic contact pin (3) and the end face; End near the second optical fiber ceramic contact pin (3) in the said metal sleeve (1) also is provided with the second perforated metal cake (8) on the optical fiber (5) that is set in the second band coating; One end of 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).
7. 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: have first of first joints of optical fibre interface (14) with one and be with the optical fiber (4) of coating to penetrate an end, the first perforated metal cake (6) and first spring (7) of metal sleeve (1) successively;
Step B: another root is had second of second joints of optical fibre interface (15) be with the optical fiber (5) of coating to penetrate the other end, the second perforated metal cake (8) and second spring (9) of said metal sleeve (1) successively;
Step C: the rear end face that will be positioned at the first optical fiber ceramic contact pin (2), the second optical fiber ceramic contact pin (3) of said metal sleeve (1) carries out welding with the optical fiber (4) of the above-mentioned first band coating, the optical fiber (5) of the second band coating respectively, and 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 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 the optical fiber ceramic sleeve (11), arrive the centre position of optical fiber ceramic sleeve (11) until end face;
Step G: first, second perforated metal cake (6,8), first, second spring (7,9) are moved to polymkeric substance filter plate (10) two side positions respectively;
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 silica gel (13) is injected metal sleeve (1) two ends, silica gel (13) solidifies back overall optical filtering device encapsulation to be accomplished.
8. manufacturing process as claimed in claim 7 is characterized in that: said liquid filling agent (12) is ultraviolet glue or oil binder.
9. manufacturing process as claimed in claim 7 is characterized in that: said 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.
10. manufacturing process as claimed in claim 7 is characterized in that: first joints of optical fibre interface (14), 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 true CN102654604A (en) | 2012-09-05 |
| CN102654604B CN102654604B (en) | 2013-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267993A (en) * | 2013-05-15 | 2013-08-28 | 长飞光纤光缆有限公司 | Method for manufacturing quarter-wave plate of full fiber |
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| JP2005352035A (en) * | 2004-06-09 | 2005-12-22 | Fujikura Ltd | Optical multiplexer/demultiplexer |
| 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 |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103267993A (en) * | 2013-05-15 | 2013-08-28 | 长飞光纤光缆有限公司 | Method for manufacturing quarter-wave plate of full fiber |
| CN103267993B (en) * | 2013-05-15 | 2015-05-13 | 长飞光纤光缆股份有限公司 | Method for manufacturing quarter-wave plate of full fiber |
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