CN114488404A - Fixed attenuator - Google Patents
Fixed attenuator Download PDFInfo
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- CN114488404A CN114488404A CN202111625838.6A CN202111625838A CN114488404A CN 114488404 A CN114488404 A CN 114488404A CN 202111625838 A CN202111625838 A CN 202111625838A CN 114488404 A CN114488404 A CN 114488404A
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- attenuation
- fixed attenuator
- attenuator
- outer frame
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- 239000011241 protective layer Substances 0.000 claims abstract description 14
- 239000007769 metal material Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 21
- 239000000428 dust Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000002216 antistatic agent Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 33
- 239000013307 optical fiber Substances 0.000 abstract description 24
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
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- 230000005611 electricity Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- 239000003063 flame retardant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
- G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3847—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
- G02B6/3849—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a fixed attenuator. Wherein, fixed attenuator includes frame, attenuation subassembly, two connectors. The outer frame of the attenuator is provided with an installation groove for fixedly installing the attenuation component, and in order to improve the strength of the whole attenuator and adapt to complex working conditions, the outer frame is coated with a protective layer made of metal materials. It can be understood that the attenuation component is a device which is composed of attenuation optical fibers and the like and is used for adjusting the power of optical signals, and the attenuation component is accommodated in the installation groove, so that the effect of protecting the attenuation component is improved. Secondly, two connectors set up respectively at frame length direction's both ends, and two connectors are connected with the decay subassembly electricity respectively, two the connector is used for external jumper wire, is used for guaranteeing that the optical output end obtains required optical power value, and can bear harsh environmental condition in narrow and small space.
Description
Technical Field
The invention relates to the technical field of optical fiber components, in particular to a fixed attenuator.
Background
An attenuator is a device for reducing the optical signal power of an optical fiber line of an optical link to a specific value, thereby adjusting the optical signal power. The attenuator has different forms according to the attenuation principle of the attenuator, and has different structures corresponding to connectors with different specifications.
The optical link that the existing attenuator can transmit at one time is relatively limited, and the existing attenuator cannot bear severe environmental conditions in a narrow space.
Disclosure of Invention
The invention mainly aims to provide a fixed attenuator, aiming at solving the technical problems that the existing attenuator has relatively limited optical link capable of transmitting at one time and cannot bear severe environmental conditions in a narrow space.
To achieve the above object, the present invention provides a fixed attenuator, comprising:
the device comprises an outer frame, a mounting groove is arranged in the outer frame, and a protective layer made of metal materials is coated on the surface of the outer frame;
the attenuation component is fixed in the mounting groove;
the two connectors are respectively arranged at two ends of the length direction of the outer frame, the two connectors are respectively connected with the attenuation assembly, and the two connectors are used for externally connecting jumper wires.
The attenuation module includes:
the two inserting core structures are arranged in the mounting groove at intervals;
and the attenuation fibers form a multi-core attenuation fiber, and two ends of the multi-core attenuation fiber respectively penetrate into the two insertion core structures.
Optionally, the multi-core attenuation fiber is a 12-core attenuation fiber.
Optionally, the attenuation module is an MPO attenuation module, and the ferrule structure is an MPO ferrule, and the MPO ferrule is used for connecting with a port of an external MPO connector.
Optionally, the fixed attenuator further includes:
the sealing plate covers the mounting groove and is made of a metal material.
Optionally, the frame is seted up by a plurality of screw holes, the closing plate seted up in the through-hole that the screw hole corresponds, fixed attenuator still includes:
the sealing plate is fixed on the outer frame through the screws, and the screws are in threaded connection with the threaded holes.
Optionally, the fixed attenuator further includes:
and the two dustproof caps are respectively arranged on the two connecting heads.
Optionally, the dust cap is made of an antistatic material.
Optionally, the dust cap is made of a soft rubber material.
Optionally, the outer frame includes:
the frame body is made of plastic, a mounting groove is formed in the frame body, the protective layer is coated on the frame body, and the protective layer is made of aluminum materials.
In the invention, the outer frame of the attenuator is provided with an installation groove for fixedly installing the attenuation component, and in order to improve the strength of the whole attenuator and adapt to complex working conditions, the outer frame is coated with a protective layer made of metal materials. It can be understood that the attenuation component is a device which is composed of attenuation optical fibers and the like and is used for adjusting the power of optical signals, and the attenuation component is accommodated in the installation groove, so that the effect of protecting the attenuation component is improved. Secondly, two connectors set up respectively at frame length direction's both ends, and two connectors are connected with the decay subassembly respectively, two the connector is used for external jumper wire, is used for guaranteeing that the optical output end obtains required optical power value, and can bear harsh environmental condition in narrow and small space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a block diagram of a first embodiment of a fixed attenuator for a machine according to the present invention;
FIG. 2 is a block diagram of a second embodiment of the fixed attenuator of the present invention;
FIG. 3 is a block diagram of a third embodiment of a fixed attenuator in accordance with the present invention;
FIG. 4 is a block diagram of a fourth embodiment of the fixed attenuator of the present invention;
FIG. 5 is a block diagram of the construction of the fixed attenuator attenuation package of the present invention;
FIG. 6 is a block diagram of the outer frame of the fixed attenuator of the present invention;
FIG. 7 is a block diagram showing the construction of a sealing plate of the fixed attenuator of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | Connecting |
| 30 | |
40 | Sealing plate |
| 50 | |
60 | Dust- |
| 70 | Multicore attenuated optical fiber | A | Mounting groove |
| B | Threaded hole | C | Through hole |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 4, a fixed attenuator, comprising: the outer frame 10 is provided with a mounting groove A inside, and the surface of the outer frame 10 is coated with a protective layer (not shown in the figure) made of a metal material; the attenuation component is fixed in the mounting groove A; two connectors 20, two the connectors 20 set up respectively the both ends of frame 10 length direction, two the connectors 20 respectively with the decay subassembly electricity is connected, two the connectors 20 are used for external jumper wire.
In the present embodiment, the outer frame 10 of the attenuator is provided with a mounting groove a for fixedly mounting the attenuation module, and in order to improve the strength of the entire attenuator and to adapt to complicated conditions, the outer frame 10 is coated with a protective layer made of a metal material. It can be understood that the attenuation component is a device which is composed of attenuation optical fibers and the like and has the function of adjusting the power of optical signals, and is contained in the mounting groove A, so that the function of protecting the attenuation component is improved. Secondly, two connectors 20 set up respectively at the both ends of frame 10 length direction, and two connectors 20 are connected with the decay subassembly respectively, two connectors 20 are used for external jumper wire, are used for guaranteeing that the optical output end obtains required optical power value, and can bear harsh environmental condition in narrow and small space.
It is understood that the surface of the outer frame 10 may be formed with a metal protective layer having high wear resistance by electroplating, and of course, the plating layer may be coated with an antistatic layer, which is not limited in detail.
For example, when a plating film made of at least one of nickel (Ni) and tin (Sn) is formed in advance on the input electrode, the output electrode, and the ground electrode in the outer frame 10 which is provided in a plating tank and is connected to the input electrode and the output electrode, and a lead wire led to the outside is connected to the input electrode by soldering, the outer frame 10 functions as a barrier layer for preventing diffusion of a solder and also ensures good coating performance of the solder, and the ground electrode is brought into contact with an end surface of the outer frame to form a plating layer of nickel, tin, or the like on the surface of the outer frame 10.
It is understood that the metal composition of the plating layer can be set as desired, and is not limited herein.
Specifically, as shown in fig. 5, the attenuation module includes: the two ferrule structures 30 are arranged in the mounting groove A at intervals; a plurality of attenuation fibers (not shown in the figure) forming a multi-core attenuation fiber 70, and two ends of the multi-core attenuation fiber 70 in the length direction respectively penetrate into the two ferrule structures 30.
Specifically, the multi-core attenuation fiber 70 is a 12-core attenuation fiber.
In this embodiment, since the common attenuator is a single core and can only connect the input end of one jumper wire and the output end of another jumper wire, the optical transmission power of one optical fiber can reach a predetermined value when being output. If 12 or more optical fibers need to be transmitted simultaneously and the optical performance is guaranteed, 12 or more attenuators and 2 times of jumpers are needed, the occupied space is quite large, and the optical fiber is not suitable for being used in a limited narrow space.
In view of this, the 12-core attenuation optical fiber of the present embodiment is formed by 12 attenuation optical fibers, and the fixed attenuator of the present invention is completed by disposing a 12-core attenuation optical fiber inside the outer frame 10, connecting both ends of the 12-core attenuation optical fiber to the connectors, respectively, processing and detecting the connectors 20, and then completing the packaging and assembling of the device. Break the precedent that the MP series connector row has no attenuator, and can meet the requirement that a fixed attenuator is used in a narrow space of a data center to ensure that an optical output end obtains a required optical power value.
It is understood that the multi-core attenuation fiber 70 may be formed of other numbers of attenuation fibers besides 12 cores, and is not limited in detail herein.
Specifically, the attenuation module is an MPO attenuation module, and the ferrule structure 30 is an MPO ferrule, and the MPO ferrule is used for connecting with a port of an external MPO connector. In this embodiment, the 12-core MPO connector 20 is connected to the 12-core attenuation fiber, the other end of the 12-core attenuation fiber is connected to another 12-core MPO connector 20, and the 2 connectors 20 are processed by a strict process, so that the end face effect meets the requirements of the relevant standards. The MPO type fixed attenuator is strictly tested and tested by adopting the row and column standard YD/T894.1-2010 part I of the technical conditions of the optical attenuator: fixed attenuator of optical fiber, MPO type fixed attenuator developed by us can meet the standard requirement.
Therefore, the MPO type fixed attenuator can transmit 12 optical links at a time for 12 optical fibers, has very small volume, is suitable for being used in places with small space in data centers and can bear severe environmental conditions.
Specifically, the fixed attenuator further includes: and the sealing plate 40 covers the mounting groove A, and the sealing plate 40 is made of a metal material. In this embodiment, the sealing plate 40 is made of a metal material, and the strength of the entire outer frame 10 can be improved to be suitable for severe environments and conditions. The sealing plate 40 is used to cover the mounting groove a.
Specifically, as shown in fig. 6, the outer frame 10 is provided with a plurality of threaded holes B, the sealing plate 40 is provided with through holes C corresponding to the threaded holes B, and the fixed attenuator further includes: and the sealing plate 40 is fixed on the outer frame 10 through the screws 50, and the screws 50 are in threaded connection with the threaded holes B. In this embodiment, a plurality of through holes C are formed in the sealing plate 40, as shown in fig. 7, the sealing plate structure is provided, the number and the positions of the through holes C correspond to those of the threaded holes B one to one, after the 12-core attenuated optical fiber and the MPO ferrule are placed in the mounting groove a, the sealing plate 10 is covered on the mounting groove a, the screws 50 sequentially penetrate through the through holes C and the threaded holes B and are fixedly connected with the threaded holes B in a threaded manner, and the sealing plate 40 is fixed on the outer frame 10 through the screws 50, so that the stability of mounting the sealing plate 40 is improved.
It can be understood that, besides the above-mentioned thread fixing, there are other fixing methods, for example, a sliding groove is opened at the opening edge of the mounting groove a, the sealing plate 40 slides in the sliding groove to perform a covering and sealing, wherein the sealing plate 40 is in interference fit with the sliding groove to improve the mounting stability;
furthermore, the sealing plate 40 and the edge of the mounting groove can be fixed by welding process, which can greatly improve the strength and stability after sealing.
Specifically, the fixed attenuator further includes: two dust caps 60, two dust caps 60 are respectively arranged on the two connectors 20. In this embodiment, the dust cap 60 is made of an antistatic material, and can isolate dust particles, moisture particles, and other impurities well.
Specifically, the dust cap 60 is made of an antistatic material. In this embodiment, the material of the dust cap 60 has a certain softness, is environmentally friendly, has no peculiar smell, and is one of the best materials for the protection element of the dust-proof product.
Specifically, the outer frame 10 includes: the protective layer comprises a frame body, wherein the frame body is made of plastic, a mounting groove A is formed in the frame body, the protective layer is coated on the frame body, and the protective layer is made of aluminum materials. In this embodiment, the outer frame 10 is made of aluminum and plastic materials, the aluminum case is light and beautiful, the plastic material is hard flame retardant material, the density and stability are good, the durability is good, the interior of the housing is smooth and clean, and the attenuator device can be placed into the housing sufficiently to protect the attenuator device.
It can be understood that, in the design process of the fixed attenuator of the present invention, the attenuation value of the attenuator is calculated as follows:
A＝-101gP1/P0(dB)
in the formula:
a is the attenuation value measured by the fixed attenuator;
po-initial optical power in mW;
p1-optical power in mW after insertion into an optical attenuator.
The directional coupler return loss calculation formula is as follows:
RL＝-101gP1/Po+101g7T2，3(dB)
in the formula:
po is the optical power value of the optical power meter Do, and the unit is mW;
p1-optical power value of optical power meter D1, in mW;
t2, 3 — transmission coefficient of optical directional coupler.
The calculation formula of the return loss value of the attenuator is as follows:
RL＝-10lg(P1'-P1)/Po+101gT2，3(dB)
in the formula:
po is the optical power value of the optical power meter Do, and the unit is mW;
p1' -optical power value of optical power meter D1, unit mW;
p1 — optical power value of the optical power meter Do in fig. 3, in mW.
In addition to the above design calculation formula, the experimental reference standards used in the calculation process and the experimental process are as follows:
Telcordia GR-1221-CORE
Telcordia GR-326-CORE
Telcordia GR-910-CORE
the production process of the fixed attenuator comprises the following steps:
the fixed attenuator mainly comprises 2 MPO adapters (namely connectors 20), 2 MT ferrules (namely plug core structures 30), 12 attenuation optical fibers and 1 metal protection shell.
The 12 attenuation optical fibers are uniformly arranged and adopt A polarity. The production process sequence is as follows:
measuring and shearing the optical cable → stripping the fiber → merging the fiber → inserting and curing → polarity detection → grinding → 3D detection → attenuation value detection → end detection → assembling → packaging.
The method mainly comprises the following production steps:
step one, measuring and shearing the length of the attenuation optical fiber required by the optical cable, sequencing the polarity, and penetrating two ends of the attenuation optical fiber into an MT (MT) plug core;
it should be noted that the tool user required for the cable measurement and cutting can select the tool user according to the requirements of the user.
Step two, dispensing and fixing the attenuation optical fiber penetrating into the MT plug core, and grinding and polishing the attenuation optical fiber;
step three, inserting MT inserting cores at two ends of the attenuation optical fiber into the adapter respectively, and testing attenuation values;
and step four, performing metal coating on the shell to prevent the optical fiber from being damaged due to the influence of external factors in the use process.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fixed attenuator, the fixed attenuator comprising:
the device comprises an outer frame, a mounting groove is arranged in the outer frame, and a protective layer made of metal materials is coated on the surface of the outer frame;
the attenuation component is fixed in the mounting groove;
the two connectors are respectively arranged at the two ends of the length direction of the outer frame, the two connectors are respectively connected with the attenuation assembly, and the two connectors are used for externally connecting jumper wires.
2. The fixed attenuator of claim 1, wherein the attenuation module comprises:
the two inserting core structures are arranged in the mounting groove at intervals;
and the attenuation fibers form a multi-core attenuation fiber, and two ends of the multi-core attenuation fiber respectively penetrate into the two insertion core structures.
3. The fixed attenuator of claim 2, wherein the multicore attenuating fiber is a 12 core attenuating fiber.
4. The fixed attenuator of claim 2, wherein the attenuation module is an MPO attenuation module and the ferrule configuration is an MPO ferrule adapted for connection to a port of an external MPO connector.
5. The fixed attenuator of claim 1, further comprising:
the sealing plate covers the mounting groove and is made of a metal material.
6. The fixed attenuator of claim 5, wherein the outer frame defines a plurality of threaded holes, the sealing plate defines through holes corresponding to the threaded holes, and the fixed attenuator further comprises:
the sealing plate is fixed on the outer frame through the screws, and the screws are in threaded connection with the threaded holes.
7. The fixed attenuator of claim 1, further comprising:
two dustproof caps, two dustproof caps set up respectively in two on the connector.
8. The fixed attenuator of claim 7, wherein the dust cap is made of an antistatic material.
9. The fixed attenuator of claim 7, wherein the dust cap is made of a soft rubber material.
10. The fixed attenuator of claim 1, wherein the frame comprises:
the frame body is made of plastic, a mounting groove is formed in the frame body, the protective layer is coated on the frame body, and the protective layer is made of aluminum materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625838.6A CN114488404A (en) | 2021-12-28 | 2021-12-28 | Fixed attenuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625838.6A CN114488404A (en) | 2021-12-28 | 2021-12-28 | Fixed attenuator |
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| CN114488404A true CN114488404A (en) | 2022-05-13 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030142947A1 (en) * | 2002-01-31 | 2003-07-31 | Holman Ryan Robert | Variable attenuator for optical fiber applications |
| CN204065463U (en) * | 2014-07-16 | 2014-12-31 | 精治光电通讯技术（上海）有限公司 | A kind of optical attenuator |
| CN208951899U (en) * | 2018-05-24 | 2019-06-07 | 深圳市广凯照明科技有限公司 | A kind of antistatic emergency stick of portable multi-function |
| CN109870774A (en) * | 2019-03-08 | 2019-06-11 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | A kind of 2 core of all-in-one micro decaying cable assembly and manufacture craft |
| CN209334017U (en) * | 2018-12-12 | 2019-09-03 | 河北机电职业技术学院 | Radiator electrostatic spraying silica gel dust plug |
| CN110346871A (en) * | 2018-04-03 | 2019-10-18 | 光联通讯有限公司 | Multi-core optical fiber attenuator |
| CN209570722U (en) * | 2019-04-15 | 2019-11-01 | 启发(天津)电子科技有限公司 | A kind of protective device of smooth adjustable attenuator |
| CN110888198A (en) * | 2018-09-10 | 2020-03-17 | 深圳望得源科技有限公司 | Optical fiber attenuator |
| CN212065825U (en) * | 2020-04-20 | 2020-12-04 | 青岛美安服饰有限公司 | Prevent pounding dustproof cap of preventing static |
| CN213182117U (en) * | 2020-10-29 | 2021-05-11 | 深圳市麦通通信设备有限公司 | Novel online optical fiber attenuator |
| CN213637756U (en) * | 2020-12-24 | 2021-07-06 | 东莞市良裕嘉五金科技有限公司 | CSFP packaged optical module shell applied to double BOSA optical modules |
| CN214623117U (en) * | 2021-05-20 | 2021-11-05 | 深圳前海荟创科技有限公司 | Duplex LC attenuator with built-in dustproof device |
-
2021
- 2021-12-28 CN CN202111625838.6A patent/CN114488404A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030142947A1 (en) * | 2002-01-31 | 2003-07-31 | Holman Ryan Robert | Variable attenuator for optical fiber applications |
| CN204065463U (en) * | 2014-07-16 | 2014-12-31 | 精治光电通讯技术（上海）有限公司 | A kind of optical attenuator |
| CN110346871A (en) * | 2018-04-03 | 2019-10-18 | 光联通讯有限公司 | Multi-core optical fiber attenuator |
| CN208951899U (en) * | 2018-05-24 | 2019-06-07 | 深圳市广凯照明科技有限公司 | A kind of antistatic emergency stick of portable multi-function |
| CN110888198A (en) * | 2018-09-10 | 2020-03-17 | 深圳望得源科技有限公司 | Optical fiber attenuator |
| CN209334017U (en) * | 2018-12-12 | 2019-09-03 | 河北机电职业技术学院 | Radiator electrostatic spraying silica gel dust plug |
| CN109870774A (en) * | 2019-03-08 | 2019-06-11 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | A kind of 2 core of all-in-one micro decaying cable assembly and manufacture craft |
| CN209570722U (en) * | 2019-04-15 | 2019-11-01 | 启发(天津)电子科技有限公司 | A kind of protective device of smooth adjustable attenuator |
| CN212065825U (en) * | 2020-04-20 | 2020-12-04 | 青岛美安服饰有限公司 | Prevent pounding dustproof cap of preventing static |
| CN213182117U (en) * | 2020-10-29 | 2021-05-11 | 深圳市麦通通信设备有限公司 | Novel online optical fiber attenuator |
| CN213637756U (en) * | 2020-12-24 | 2021-07-06 | 东莞市良裕嘉五金科技有限公司 | CSFP packaged optical module shell applied to double BOSA optical modules |
| CN214623117U (en) * | 2021-05-20 | 2021-11-05 | 深圳前海荟创科技有限公司 | Duplex LC attenuator with built-in dustproof device |
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