CN101833143A - Cold-lapping linear attenuator - Google Patents
Cold-lapping linear attenuator Download PDFInfo
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- CN101833143A CN101833143A CN 201010135390 CN201010135390A CN101833143A CN 101833143 A CN101833143 A CN 101833143A CN 201010135390 CN201010135390 CN 201010135390 CN 201010135390 A CN201010135390 A CN 201010135390A CN 101833143 A CN101833143 A CN 101833143A
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Abstract
The invention relates to a cold-lapping linear attenuator, comprising an attenuation fiber two ends of which are provided with connecting tubes; the end part of the attenuation fiber extends into the corresponding connecting tubes, and are fixedly connected with the connecting tubes; a core plug body is arranged on the other end of the connecting tubes provided with the attenuation fiber; one end of the core plug body extends into the connecting tubes and can slide in the connecting tubes; fiber matching liquid is arranged at the end parts of the connecting tubes corresponding to the attenuation fiber; the fiber matching liquid encircles the end part of the attenuation fiber; and an exhaust vent is arranged on the side walls of the connecting tubes provided with the fiber matching liquid. The cold-lapping linear attenuator has simple structure, convenient operation and high stability and high reliability.
Description
Technical field
The present invention relates to a kind of optical fiber and connect attenuator, especially a kind of cold-lapping linear attenuator belongs to the technical field of fibre junction.
Background technology
In the fibre junction field, the mechanical type fibre junction is two kinds of different modes realizing that optical fiber is fixedlyed connected with Fusion Joining, and the mechanical type fibre junction also is optical fiber cold joint technology.Fiber to the home be deployed in user resident and indoor at the fibre junction point have big and the characteristics that the place disperses of number of users.Because different user is applied to install asynchronism(-nization), same sub-district, similar ADSL service release.After the user arrived to a certain degree, existing workmen and heat sealing machine can not satisfy the time requirement of user's turn up service.Mechanical type fibre junction mode is because simple to operate, and the staff training cycle is short, and instrument is invested characteristics such as little, for the optical fiber large scale deployment provides most cost-effective fibre junction solution.In such as corridor eminence, small space, illumination is not enough, on-the-spot power taking inconvenience etc. occasion.The mechanical type joints of optical fibre provide convenience, practicality, the means that continue efficiently for design, installation, maintainer.In theory, in Fiber to the home engineering, to the family, continuing of the optical cable of registering one's residence of enormous amount, scattered distribution such as capillary all should consider to use the mechanical type joints of optical fibre after the optical splitter beam split.
Optical fiber cold joint technology is guardian technique in optical fiber is registered one's residence engineering, but the insertion loss of optical fiber cold joint product is the resistance for fear of this technology popularization always.Generally the Insertion Loss requirement to the common joints of optical fibre is less than 0.3 or 0.2; Certainly the insertion loss of cold joint product can be more satisfactory state below 0.3 or 0.2.But external domesticly seldom have several companies the insertion loss of cold joint product really can be controlled at below 0.3 or 0.2, and the real insertion loss of this series products of other companies is all about 0.5～0.6.At present, traditional line pad is the attenuating fiber of one section desirable value of welding in the middle of optical fiber, and the value that needs is arrived in the flux depression of transmission.The same with all welding products, the shortcoming of described attenuator is to be not easy to on-the-spot interim operation, need measure the length of the optical fiber of wanting, and then customizes to factory.If length has deviation will influence the use of attenuator, install and keep in repair very inconvenient.The cold joint attenuator is very high to the requirement of insertion loss, the flow of 5dB uses the attenuating fiber of 5dB if desired, but its Insertion Loss reached more than 0.5, and the data of coming out so may just become 4dB or 3dB, that product stability and poor reliability influence the normal use of optical fiber.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of cold-lapping linear attenuator is provided, it is simple in structure, easy to operate, stability and reliability height.
According to technical scheme provided by the invention, described cold-lapping linear attenuator comprises attenuating fiber, and the two ends of described attenuating fiber are equipped with connecting pipe, and the end of described attenuating fiber is all stretched in the corresponding connecting pipe, and fixedlys connected with connecting pipe; Described connecting pipe is equipped with the lock pin body corresponding to the other end that is provided with attenuating fiber, and an end of described lock pin body stretches in the connecting pipe, and can slide in connecting pipe; End corresponding to attenuating fiber in the connecting pipe is provided with optical fiber matching fluid, and described optical fiber matching fluid is surrounded the end of attenuating fiber; Connecting pipe is provided with vent port corresponding to the sidewall that optical fiber matching fluid is set.
Described lock pin body is provided with first plug core tail handle and second plug core tail handle corresponding to the other end that stretches into connecting pipe, and described first plug core tail handle, second plug core tail handle are all fixedlyed connected with the lock pin body; First plug core tail handle, second plug core tail handle are provided with slot corresponding to the other end that the lock pin body is set; Described slot is connected with the lock pin body.Described first plug core tail handle is provided with the first lock pin cavity, and described second plug core tail handle is provided with the second lock pin cavity; One end of the described first lock pin cavity is embedded in the second lock pin cavity, and is fastenedly connected with the second lock pin cavity; Described first plug core tail handle penetrates in the first lock pin cavity corresponding to the other end that is provided with the lock pin body, and is fastenedly connected with first plug core tail handle; Described second plug core tail handle penetrates in the second lock pin cavity corresponding to the other end that is provided with the lock pin body, and is fastened and connected with the second lock pin cavity.
Be equipped with locating slot on the described first lock pin cavity and the second lock pin cavity, described locating slot is connected with the first lock pin cavity, the second lock pin cavity; Be equipped with lock pin in the locating slot and push away, the fixed orifice that described lock pin pushes portion respectively with the first lock pin cavity, the second lock pin cavity concentric.Be equipped with mounting groove on the described first lock pin cavity and the second lock pin cavity, described mounting groove is connected with the first lock pin cavity, the second lock pin cavity; Be equipped with crimping in the mounting groove and turn round, the pilot hole that the bottom is turned round in described crimping respectively with the first lock pin cavity, the second lock pin cavity concentric, described crimping is turned round and can be slided in mounting groove.
The described first lock pin cavity is provided with equally distributed slot segmentation corresponding to the other end that is connected with the second lock pin cavity.The described second lock pin cavity is provided with equally distributed slot segmentation corresponding to the other end that is connected with the first lock pin cavity.The described first lock pin cavity is provided with the tail cover corresponding to the other end that is connected with the second lock pin cavity, and described tail cover is fastenedly connected with the first lock pin cavity, and the end of tail cover is provided with connecting through hole.The described second lock pin cavity is provided with the tail cover corresponding to the other end that is connected with the first lock pin cavity, and described tail cover is fastenedly connected with the second lock pin cavity; The end of tail cover is provided with connecting through hole.
Advantage of the present invention: the two ends at attenuating fiber are provided with connecting pipe, connecting pipe is provided with vent port corresponding to the sidewall that optical fiber matching fluid is set, when fibre junction, air in the connecting pipe is along with the promotion of lock pin body is discharged from vent port, utilize the effect of optical fiber matching fluid, lock pin body and attenuating fiber can be continued under vacuum state; Loss value in the time of can fibre junction.Turn round with lock pin and push away by crimping is set on the first lock pin cavity and the second lock pin cavity, lock pin tail cover is easy for installation, fibre junction rear stability and reliability height.
Description of drawings
Fig. 1 is an explosive view of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1: the present invention includes that tail cover 1, crimping turn round 2, lock pin pushes away 3, the first lock pin cavity 4, first plug core tail handle 5, lock pin body 6, pilot hole 7, fixed orifice 8, locating slot 9, slot 10, vent port 11, attenuating fiber 12, the second lock pin cavity 13, connecting through hole 14, slot segmentation 15, mounting groove 16, connecting pipe 17 and second plug core tail handle 18.
As shown in Figure 1: an end of the described second lock pin cavity 13 is provided with groove, and an end of the first lock pin cavity 4 is embedded in the second lock pin cavity 13, and is fastenedly connected with the second lock pin cavity 13; The described first lock pin cavity 4 is connected with the second lock pin cavity 13.Be equipped with locating slot 9 and mounting groove 16 on the side face of the described first lock pin cavity 4 and the second lock pin cavity 13, be equipped with lock pin in the described locating slot 9 and push away 3; Be equipped with crimping in the mounting groove 16 and turn round 2.Described crimping is turned round 2 lower end and is provided with pilot hole 7, and crimping is turned round 2 and is embedded in the mounting groove 16, the pilot hole 7 and the first lock pin cavity 4 and the second lock pin cavity, 13 concentrics; 2 upper end is turned round in crimping and the shape of mounting groove 16 matches, and crimping is turned round 2 and can be slided in mounting groove 16.Described lock pin pushes away 3 lower end and is provided with fixed orifice 8, and lock pin pushes away 3 when being embedded in the locating slot 9, the fixed orifice 8 and the first lock pin cavity 4 and the second lock pin cavity, 13 equal concentrics; Lock pin pushes away 3 upper end and the shape of locating slot 9 matches.
Be respectively equipped with corresponding first plug core tail handle 5 and second plug core tail handle 18 in the described first lock pin cavity 4 and the second lock pin cavity 13.One end of described first plug core tail handle 5 and second plug core tail handle 18 is provided with slot 10, and slot 10 makes first plug core tail handle 5 and second plug core tail handle 18 form two lobe formula structures; First plug core tail handle 5 is provided with the lock pin body 6 of fixedlying connected with second plug core tail handle 18 corresponding to being provided with slot 10 other ends.Described two lock pin bodies 6 all are connected with the decay body.Described decay body comprises attenuating fiber 12, and the two ends of described attenuating fiber 12 are stretched into respectively in two connecting pipes 17, and fixedlys connected with connecting pipe 17.Described lock pin body 6 all is connected with connecting pipe 17 corresponding to the other end that is connected with first plug core tail handle 5, second plug core tail handle 18.Lock pin body 6 stretches in the connecting pipe 17 corresponding to the other end that links to each other with first plug core tail handle 5, second plug core tail handle 18, and can slide in connecting pipe 17.End corresponding to attenuating fiber 12 in the connecting pipe 17 is provided with optical fiber matching fluid, and described optical fiber matching fluid is surrounded the end face of attenuating fiber 12; Connecting pipe 17 is provided with vent port 11 corresponding to the sidewall that optical fiber matching fluid is set.Described optical fiber matching fluid is positioned at the cavity of lock pin body 6 and the formation of attenuating fiber 12 ends.
First plug core tail handle 5 penetrates in the first lock pin cavity 4 corresponding to the other end that lock pin body 6 is set, and second plug core tail handle 18 penetrates in the second lock pin cavity 13 corresponding to the other end that lock pin body 6 is set.First plug core tail handle 5, second plug core tail handle 18 are passed lock pin respectively and are pushed away the fixed orifice 8 of 3 lower ends and the pilot hole 7 that 2 lower ends are turned round in crimping corresponding to penetrating ends in the first lock pin cavity 4, the second lock pin cavity 13.After first plug core tail handle 5 is passed the fixed orifice 8 that lock pin pushes away 3 lower ends, by on first plug core tail handle 5 and fixed orifice 8, adhesive glue being set in advance, make first plug core tail handle 5 push away 3 and fixedly connected, push away 3 by lock pin and can adjust the position that first plug core tail handle 5 is positioned at the first lock pin cavity, 4 correspondences with lock pin.After second plug core tail handle 18 is passed the fixed orifice 8 that lock pin pushes away 3 lower ends, by on second plug core tail handle 18 and fixed orifice 8, adhesive glue being set in advance, make second plug core tail handle 18 push away 3 and fixedly connected, push away 3 by lock pin and can adjust the position that second plug core tail handle 18 is positioned at the second lock pin cavity, 13 correspondences with lock pin.First plug core tail handle 5 is passed the pilot hole 7 that 2 lower ends are turned round in crimping, turning round 2 by crimping moves relative to first plug core tail handle 5, first plug core tail handle 5 can be adjusted corresponding to the opening degree that slot 10 ends are set, thereby first plug core tail handle 5 can be adjusted and the clamping degree of the tail optical fiber of waiting to continue.Second plug core tail handle 18 is passed the pilot hole 7 that 2 lower ends are turned round in crimping, turning round 2 by crimping moves relative to second plug core tail handle 18, second plug core tail handle 18 can be adjusted corresponding to the opening degree that slot 10 ends are set, thereby second plug core tail handle 18 can be adjusted and the clamping degree of the tail optical fiber of waiting to continue.
The described first lock pin cavity 4 is provided with equally distributed slot segmentation 15 corresponding to the other end that is connected with the second lock pin cavity 13, and described slot segmentation 15 is three, makes the end of the first lock pin cavity 4 form three valve structures.The second lock pin cavity 13 also is provided with equally distributed slot segmentation 15 corresponding to the other end that is connected with the first lock pin cavity 4, makes the end of the second lock pin cavity 13 also form three valve structures.The first lock pin cavity 4 and the second lock pin cavity 13 are equipped with tail cover 1 corresponding to the end that slot segmentation 15 is set, and described tail the cover 1 and first lock pin cavity 4, the second lock pin cavity 13 are fastenedly connected.The end of tail cover 1 is provided with connecting through hole 14, tail overlaps 1 inner tapered structure, tail cover 1 is installed on the first lock pin cavity 4 and the second lock pin cavity 13, can three valve structures of the first lock pin cavity 4 and the second lock pin cavity 13 be compressed, make the end of the first lock pin cavity 4 and the second lock pin cavity 13 can clamp the tail optical fiber that continues.
As shown in Figure 1: during use, tail optical fiber that earlier will be the to be continued fixed length cutting of removing photoresist, and then pass the connecting through hole 14 of tail cover 1 respectively.The described tail optical fiber that passes behind the connecting through hole 14 passes the first lock pin cavity 4 and the second lock pin cavity 13 more respectively; Pass the tail optical fiber of the first lock pin cavity 4 and the second lock pin cavity 13, by slot 10 that is arranged on first plug core tail handle 5, second plug core tail handle 18 and the passage that lock pin body 6 forms, utilize special process to be connected with lock pin body 6 tail optical fiber to be continued again.After tail optical fiber continued with the lock pin body 6 that is arranged on first plug core tail handle 5, second plug core tail handle, 18 ends, first plug core tail handle 5, second plug core tail handle 18 penetrated respectively in the first lock pin cavity 4 and the second lock pin cavity 13 corresponding to the other end that lock pin body 6 is set.First plug core tail handle 5 is passed lock pin respectively and is pushed away the fixed orifice 8 of 3 lower ends and the pilot hole 7 that 2 lower ends are turned round in crimping; By on the correspondence position of the fixed orifice 8 and first plug core tail handle 5, adhesive glue being set all, after first plug core tail handle 5 is passed lock pin and is pushed away 3, first plug core tail handle 5 pushes away 3 with lock pin fixedlys connected, and pushes away 3 by lock pin and can adjust the position of first plug core tail handle 5 in the first lock pin cavity 4; First plug core tail handle 5 is passed the pilot hole 7 that 2 lower ends are turned round in crimping, and crimping is turned round 2 and can be moved on first plug core tail handle 5; Crimping is turned round 2 and is being moved the degree that can adjust slot 10 clamping tail optical fibers on first plug core tail handle 5 on first plug core tail handle 5.Second plug core tail handle 18 is passed lock pin respectively and is pushed away the fixed orifice 8 of 3 lower ends and the pilot hole 7 that 2 lower ends are turned round in crimping; By on the correspondence position of the fixed orifice 8 and second plug core tail handle 18, adhesive glue being set all, after second plug core tail handle 18 is passed lock pin and is pushed away 3, second plug core tail handle 18 pushes away 3 with lock pin fixedlys connected, and pushes away 3 by lock pin and can adjust the position of second plug core tail handle 18 in the second lock pin cavity 13; Second plug core tail handle 18 is passed the pilot hole 7 that 2 lower ends are turned round in crimping, and crimping is turned round 2 and can be moved on second plug core tail handle 18; Crimping is turned round 2 and is being moved the degree that can adjust slot 10 clamping tail optical fibers on second plug core tail handle 18 on first plug core tail handle 5.
Lock pin body 6 all stretches in the connecting pipe 17 corresponding to first plug core tail handle 5, second plug core tail handle, the 18 contacted other ends, and connecting pipe 17 has constituted the decay body with attenuating fiber 12.In the connecting pipe 17 optical fiber matching fluid is set, connecting pipe 17 is provided with vent port 11 corresponding to the sidewall that optical fiber matching fluid is set.When lock pin body 6 slides in connecting pipe 17 corresponding to the end of stretching into connecting pipe 17, gas in the connecting pipe 17 is along with the promotion of lock pin body 6 is discharged from vent port 11, when lock pin body 6 closely contacts with the end of attenuating fiber 12, optical fiber matching fluid is surrounded lock pin body 6 and attenuating fiber 12 contacted end faces, lock pin body 6 and attenuating fiber 12 complete connections.After gas in the connecting pipe 17 is all discharged, make continuing of 12 of lock pin body 6 and attenuating fibers, reduced the loss of 12 of lock pin body 6 and attenuating fibers at the vacuum state.The handshaking procedure of the lock pin body 6 of decay body both sides is identical.By changing the attenuating fiber 12 of differential declines value, can realize the attenuator of corresponding numerical value.Concentric setting by lock pin pushes away 3, the 2 and first lock pin cavity 4, the second lock pin cavity 13 are turned round in crimping when guaranteeing that lock pin body 6 docks with attenuating fiber 12, can guarantee that concentric continues, and splicing point is safe and reliable.
When the optical fiber matching fluid in the connecting pipe 17 reduces, can also pass through vent port 11 injection fibre matching fluid in connecting pipe 17, easy to operate.Lock pin body 6 and decay body after continuing and finishing are fastened and connected tail the cover 1 and first lock pin cavity 4 and the second lock pin cavity 13.Form taper in the tail cover 1, tail cover 1 is with after the first lock pin cavity 4 and the second lock pin cavity 13 are connected, tail cover 1 can make three valve structures of the first lock pin cavity 4 and the second lock pin cavity 13 shrink, thereby clamps contacting of 13 of tail optical fiber and the first lock pin cavity 4 and the second lock pin cavitys.The first lock pin cavity 4 utilizes the screw thread of end and the second lock pin cavity 13 to be fastened and connected, thereby forms whole seal connection structure.
The present invention is provided with connecting pipe 17 at the two ends of attenuating fiber 12, and connecting pipe 17 is provided with vent port 11 corresponding to the sidewall that optical fiber matching fluid is set.When fibre junction, the air in the connecting pipe 17 utilizes the effect of optical fiber matching fluid along with the promotion of lock pin body 6 is discharged from vent port 11, and lock pin body 6 and attenuating fiber 12 can be continued under vacuum state; Loss value in the time of can reducing fibre junction.By on the first lock pin cavity 4 and the second lock pin cavity 13, be provided with crimping turn round 2 with lock pin to push away 3, the first plug core tail handle 5 easy for installation, fibre junction rear stability and reliability height.
Claims (9)
1. a cold-lapping linear attenuator comprises attenuating fiber (12), and the two ends of described attenuating fiber (12) are equipped with connecting pipe (17), and the end of described attenuating fiber (12) is all stretched in the corresponding connecting pipe (17), and fixedlys connected with connecting pipe (17); It is characterized in that: described connecting pipe (17) is equipped with lock pin body (6) corresponding to the other end that is provided with attenuating fiber (12), and an end of described lock pin body (6) stretches in the connecting pipe (17), and can slide in connecting pipe (17); End corresponding to attenuating fiber (12) in the connecting pipe (17) is provided with optical fiber matching fluid, and described optical fiber matching fluid is surrounded the end of attenuating fiber (12); Connecting pipe (17) is provided with vent port (11) corresponding to the sidewall that optical fiber matching fluid is set.
2. cold-lapping linear attenuator according to claim 1, it is characterized in that: described lock pin body (6) is provided with first plug core tail handle (5) and second plug core tail handle (18) corresponding to the other end that stretches into connecting pipe (17), and described first plug core tail handle (5), second plug core tail handle (18) are all fixedlyed connected with lock pin body (6); First plug core tail handle (5), second plug core tail handle (18) are provided with slot (10) corresponding to the other end that lock pin body (6) is set; Described slot (10) is connected with lock pin body (6).
3. cold-lapping linear attenuator according to claim 2 is characterized in that: described first plug core tail handle (5) is provided with the first lock pin cavity (4), and described second plug core tail handle (18) is provided with the second lock pin cavity (13); One end of the described first lock pin cavity (4) is embedded in the second lock pin cavity (13), and is fastenedly connected with the second lock pin cavity (13); Described first plug core tail handle (5) penetrates in the first lock pin cavity (4) corresponding to the other end that is provided with lock pin body (6), and is fastenedly connected with first plug core tail handle (4); Described second plug core tail handle (18) penetrates in the second lock pin cavity (13) corresponding to the other end that is provided with lock pin body (6), and is fastened and connected with the second lock pin cavity (13).
4. cold-lapping linear attenuator according to claim 3, it is characterized in that: be equipped with locating slot (9) on the described first lock pin cavity (4) and the second lock pin cavity (13), described locating slot (9) is connected with the first lock pin cavity (4), the second lock pin cavity (13); Be equipped with lock pin in the locating slot (9) and push away (3), the fixed orifice (8) that described lock pin pushes away (3) bottom respectively with the first lock pin cavity (4), second lock pin cavity (13) concentric.
5. cold-lapping linear attenuator according to claim 3, it is characterized in that: be equipped with mounting groove (16) on the described first lock pin cavity (4) and the second lock pin cavity (13), described mounting groove (16) is connected with the first lock pin cavity (4), the second lock pin cavity (13); Be equipped with crimping in the mounting groove (16) and turn round (2), the pilot hole (7) that (2) bottom is turned round in described crimping respectively with the first lock pin cavity (4), second lock pin cavity (13) concentric, described crimping is turned round (2) and can be slided in mounting groove (16).
6. cold-lapping linear attenuator according to claim 3 is characterized in that: the described first lock pin cavity (4) is provided with equally distributed slot segmentation (15) corresponding to the other end that is connected with the second lock pin cavity (13).
7. cold-lapping linear attenuator according to claim 3 is characterized in that: the described second lock pin cavity (13) is provided with equally distributed slot segmentation (15) corresponding to the other end that is connected with the first lock pin cavity (4).
8. cold-lapping linear attenuator according to claim 3, it is characterized in that: the described first lock pin cavity (4) is provided with tail cover (1) corresponding to the other end that is connected with the second lock pin cavity (13), described tail cover (1) is fastenedly connected with the first lock pin cavity (4), and the end of tail cover (1) is provided with connecting through hole (14).
9. cold-lapping linear attenuator according to claim 3 is characterized in that: the described second lock pin cavity (13) is provided with tail cover (1) corresponding to the other end that is connected with the first lock pin cavity (4), and described tail cover (1) is fastenedly connected with the second lock pin cavity (4); The end of tail cover (1) is provided with connecting through hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101353905A CN101833143B (en) | 2010-03-17 | 2010-03-17 | Cold-lapping linear attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101353905A CN101833143B (en) | 2010-03-17 | 2010-03-17 | Cold-lapping linear attenuator |
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| Publication Number | Publication Date |
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| CN101833143A true CN101833143A (en) | 2010-09-15 |
| CN101833143B CN101833143B (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101353905A Expired - Fee Related CN101833143B (en) | 2010-03-17 | 2010-03-17 | Cold-lapping linear attenuator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2560956Y (en) * | 2001-11-23 | 2003-07-16 | 鸿富锦精密工业（深圳）有限公司 | Optical attenuator |
| JP2003294953A (en) * | 2002-01-29 | 2003-10-15 | Nippon Electric Glass Co Ltd | Optical device and method for manufacturing the same |
| US6953286B2 (en) * | 2002-08-29 | 2005-10-11 | Samsung Electronics Co., Ltd. | Ferrule for hermetically packaging optical fibers |
| CN101551495A (en) * | 2008-04-02 | 2009-10-07 | 泰科电子公司 | Optical attenuator |
| CN201637882U (en) * | 2010-03-17 | 2010-11-17 | 无锡光太光通讯器件有限公司 | Cold joint linear attenuator |
-
2010
- 2010-03-17 CN CN2010101353905A patent/CN101833143B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2560956Y (en) * | 2001-11-23 | 2003-07-16 | 鸿富锦精密工业（深圳）有限公司 | Optical attenuator |
| JP2003294953A (en) * | 2002-01-29 | 2003-10-15 | Nippon Electric Glass Co Ltd | Optical device and method for manufacturing the same |
| US6953286B2 (en) * | 2002-08-29 | 2005-10-11 | Samsung Electronics Co., Ltd. | Ferrule for hermetically packaging optical fibers |
| CN101551495A (en) * | 2008-04-02 | 2009-10-07 | 泰科电子公司 | Optical attenuator |
| CN201637882U (en) * | 2010-03-17 | 2010-11-17 | 无锡光太光通讯器件有限公司 | Cold joint linear attenuator |
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| Publication number | Publication date |
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| CN101833143B (en) | 2011-08-17 |
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Granted publication date: 20110817 Termination date: 20140317 |