CN104280825A - WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof - Google Patents
WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof Download PDFInfo
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- CN104280825A CN104280825A CN201310272760.3A CN201310272760A CN104280825A CN 104280825 A CN104280825 A CN 104280825A CN 201310272760 A CN201310272760 A CN 201310272760A CN 104280825 A CN104280825 A CN 104280825A
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- Prior art keywords
- wdm
- optical fiber
- optical
- filter
- light
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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
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
- G02B6/2937—In line lens-filtering-lens devices, i.e. elements arranged along a line and mountable in a cylindrical package for compactness, e.g. 3- port device with GRIN lenses sandwiching a single filter operating at normal incidence in a tubular package
Abstract
The invention discloses a WDM device which comprises an incident fiber, a lens, a first WDM optical filter, a second WDM optical filter and an outgoing optical fiber. The first WDM optical filter is a lambda1 transmission/lambda2 reflection optical filter. The second WDM optical filter is a lambda1 reflection/lambda2 transmission optical filter. After light outgoes from the incident fiber, the light arrives at the first WDM optical filter through the lens. The light with wavelength of lambda1 penetrates through the first WDM optical filter. The light with wavelength of lambda2 is reflected, and arrives at the second WDM optical filter after the lens. The light with wavelength of lambda1 is reflected by the second WDM optical filter. The light with wavelength of lambda2 penetrates through the second WDM optical filter and enters the outgoing optical fiber. The invention further discloses a manufacturing method of the WDM device, a WDM wavelength division multiplexer with the WDM device, and a manufacturing method of the WDM wavelength division multiplexer. The WDM device has functions of: satisfying a requirement for high reflection isolation, and reducing device volume. Simultaneously low cost and higher reliability are realized.
Description
Technical field
The present invention relates to a kind of optical device, especially a kind of WDM device, the invention still further relates to a kind of method for making of WDM device.
The present invention relates to a kind of wavelength division multiplexer, especially a kind of WDM, the invention still further relates to a kind of method for making of WDM.
Background technology
In current optical network device, the mono-device of WDM, namely only use a filter plate, its reflection isolation degree is generally-12dB, even if through the effort of technician, the most high reverse--bias isolation of single device is also only-18 ~-20dB.But along with the development of optical fiber communication, a lot of user requires that isolation is often greater than 30dB, even reaches 35dB.If by technology general at present, single device in no case can meet the demands, the method for multiple device cascade or multiple filter plate can only be adopted to realize, but such technical scheme make the reliability of connection bad.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of WDM device, and the method for making of this WDM device, also have a kind of WDM, and the method for making of this WDM, the isolation of single device is improved greatly, and better reliability.
For solving the problems of the technologies described above, the technical scheme of WDM device of the present invention is, comprises incident optical, lens, a WDM optical filter, the 2nd WDM optical filter and outgoing optical fiber; The light of described incident optical injection and the parallel light injecting outgoing optical fiber; A described WDM optical filter is λ 1 transmission/λ 2 reflection filter, and described 2nd WDM optical filter is that λ 1 reflects/λ 2 transmission filter; Light is after being penetrated by described incident optical, a described WDM optical filter is arrived through lens, wavelength is that the Transmission light of λ 1 crosses a described WDM optical filter, wavelength is after described lens, again arrive described 2nd WDM optical filter after the light reflection of λ 2, wavelength is that the light of λ 1 is reflected by described 2nd WDM optical filter, and wavelength is that the light of λ 2 is entered described outgoing optical fiber by described 2nd WDM filter transmission.
Present invention also offers a kind of method for making of above-mentioned WDM device, its technical scheme comprises the steps:
Described 2nd WDM filter plate is arranged on the position of blocking outgoing optical fiber;
A described WDM filter plate is arranged on lens rear;
When a described WDM filter plate and the 2nd WDM filter plate are installed, incident optical, lens, a WDM optical filter, the 2nd WDM optical filter and outgoing optical fiber are placed on adjustment rack, adjust according to related optical parameter, make the Insertion Loss between incident optical to outgoing optical fiber reach optimum coupling, afterwards a described WDM filter plate and the 2nd WDM filter plate are installed fixing.
The present invention again discloses a kind of WDM, its technical scheme is, comprise above-mentioned WDM device as the first optical fiber collimator, and second optical fiber collimator, the number of fibers of described first optical fiber collimator is the twice of described second optical fiber collimator number of fibers, described second optical fiber collimator is aimed at described first optical fiber collimator, and the wavelength that the first optical fiber collimator clump the one WDM filter transmission is gone out is that the light of λ 1 is injected in the optical fiber of described second optical fiber collimator.
The present invention discloses a kind of method for making of above-mentioned WDM again, and its technical scheme comprises the following steps:
WDM device is made according to the method for making of above-mentioned WDM device;
First optical fiber collimator and the second optical fiber collimator are placed on adjustment rack, adjust according to related optical parameter, make it to reach optimum coupling position, then install fixing.
The present invention, by adopting technique scheme, can realize the requirement of high reverse--bias isolation, can realize again the function of two devices, reduce the volume of device.Meanwhile, with low cost, there is higher reliability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further detailed explanation:
Fig. 1 is the structural representation of a WDM device of the present invention embodiment;
Fig. 2 is the sectional view of device in Fig. 1 embodiment;
Fig. 3 is the structural representation of the first optical fiber collimator (four optical fiber collimators) in WDM device of the present invention embodiment;
The sectional view of four optical fiber collimators of Fig. 4 for adopting in WDM device of the present invention embodiment;
Fig. 5 is the schematic diagram of a WDM of the present invention embodiment;
Fig. 6 is the structural representation of the second optical fiber collimator in WDM of the present invention embodiment;
Fig. 7 is the sectional view of the second optical fiber collimator shown in Fig. 6.
In figure, Reference numeral is, 1. a WDM wave filter; 2. lens; 3. the 2nd WDM filter plate; 4.WDM device; 5. shell; 6. glue; 7. the second optical fiber collimator; 8. packaging body.
Embodiment
The invention discloses a kind of WDM device, comprise incident optical, lens, a WDM optical filter, the 2nd WDM optical filter and outgoing optical fiber; The light of described incident optical injection and the parallel light injecting outgoing optical fiber; A described WDM optical filter is λ 1 transmission/λ 2 reflection filter, and described 2nd WDM optical filter is that λ 1 reflects/λ 2 transmission filter; Light is after being penetrated by described incident optical, a described WDM optical filter is arrived through lens, wavelength is that the Transmission light of λ 1 crosses a described WDM optical filter, wavelength is after described lens, again arrive described 2nd WDM optical filter after the light reflection of λ 2, wavelength is that the light of λ 1 is reflected by described 2nd WDM optical filter, and wavelength is that the light of λ 2 is entered described outgoing optical fiber by described 2nd WDM filter transmission.
As depicted in figs. 1 and 2, described WDM device 4 is four optical fiber collimators, comprises a pair incident optical C, D and a pair outgoing optical fiber A, B, and described 2nd WDM optical filter 3 only covers described a pair outgoing optical fiber A, B.
As shown in Figure 1, described WDM device 4 also comprises first and second that axially arranges, incident optical and outgoing optical fiber is provided with in described first, lens 2 and a WDM optical filter 1 is provided with in described second, described first and second junction are respectively arranged with the interface be parallel to each other, and described 2nd WDM optical filter 3 is arranged on the interface of described first.
As shown in Figure 3, the angle of the axis of described interface and WDM device is 82 °.
The invention also discloses a kind of method for making of above-mentioned WDM device, comprise the steps:
Described 2nd WDM filter plate is arranged on the position of blocking outgoing optical fiber;
A described WDM filter plate is arranged on lens rear;
When a described WDM filter plate and the 2nd WDM filter plate are installed, incident optical, lens, a WDM optical filter, the 2nd WDM optical filter and outgoing optical fiber are placed on adjustment rack, adjust according to related optical parameter, make the Insertion Loss between incident optical to outgoing optical fiber reach optimum coupling, afterwards a described WDM filter plate and the 2nd WDM filter plate are installed fixing.
Described WDM device also comprises first and second that axially arranges, incident optical and outgoing optical fiber is provided with in described first, lens are provided with by described second, a described WDM optical filter is arranged on the lens rear in second, described first and second junction are respectively arranged with the interface be parallel to each other, and are arranged on the interface of described first by described 2nd WDM optical filter.
A described WDM filter plate is bonded on lens by glue, then high-temperature baking solidification.
Described 2nd WDM filter plate is bonded on described interface by glue, then high-temperature baking solidification.
The invention also discloses a kind of WDM, as shown in Figure 5, comprise above-mentioned WDM device as the first optical fiber collimator, and second optical fiber collimator, the number of fibers of described first optical fiber collimator is the twice of described second optical fiber collimator number of fibers, described second optical fiber collimator is aimed at described first optical fiber collimator, and the wavelength that the first optical fiber collimator clump the one WDM filter transmission is gone out is that the light of λ 1 is injected in the optical fiber of described second optical fiber collimator.
As shown in Figure 3 and Figure 6, described first optical fiber collimator is four optical fiber collimators, and described second optical fiber collimator is a double-fiber collimator.
As shown in Figure 5, described first optical fiber collimator and the second optical fiber collimator are encapsulated in same packaging body 8.
The invention also discloses a kind of method for making of above-mentioned WDM, comprise the following steps:
WDM device is made according to the method for making of above-mentioned WDM device;
First optical fiber collimator and the second optical fiber collimator are placed on adjustment rack, adjust according to related optical parameter, make it to reach optimum coupling position, then install fixing.
With major diameter glass tube as packaging body, with glue, described first optical fiber collimator is fixedly connected with described packaging body with the second optical fiber collimator.
In an embodiment of the present invention, as shown in Figures 1 to 5, described WDM device, when light is from optical fiber C(or optical fiber D) when inputting, light is first through a WDM filter plate, and this WDM filter plate is λ 1 transmission/λ 2 reflection filter sheet, and the light of λ 1 wavelength is gone out from one end transmission of double-fiber collimator, and enter in the double-fiber collimator as the second optical fiber collimator, the light of λ 2 wavelength is reflected back optical fiber A(or optical fiber B).Owing to being assembled with the 2nd WDM filter plate, this WDM filter plate is that λ 1 reflects/λ 2 transmission filter plate, and cover the light core of optical fiber A and optical fiber B, so when light is reflected back optical fiber A(or optical fiber B from the 2nd WDM filter plate) time, need again through the 2nd WDM filter plate, the light of λ 1 wavelength to be reflected, make the Transmission light of λ 2 wavelength go over simultaneously.Like this through the filtration of twice filter plate, reflection isolation degree can be made to double.
Simultaneously because described WDM device uses four patch cords of specifying and two patch cords of specifying, therefore described WDM device is binary channels device, is namely equivalent to two independently, 1 × 2 identical port WDM device.Be specially: when optical fiber C is as input end, optical fiber A is corresponding reflection end, and a wherein optical fiber of double-fiber collimator is corresponding transmission end, and this is one group of independently 1 × 2 port high reverse--bias isolation WDM device; When optical fiber D is as input end, optical fiber B is corresponding reflection end, and an other optical fiber of double-fiber collimator is corresponding transmission end, and this is other one group of independently 1 × 2 port high reverse--bias isolation WDM device.
WDM described in making above-described embodiment to adopt following concrete steps:
1, a WDM filter plate and the 2nd WDM filter plate 2 of specifying index is selected;
2, be processed into four optical fiber collimators of assigned address or shape, require that first is 82 degree of angles with second interface and axial angle, and marked A, B, C, D tetra-optical fiber, wherein A, B are as outgoing optical fiber, and C, D are as incident optical;
3, be processed into the double-fiber collimator of assigned address or shape, require that its two parts interface is 82 degree of angles with axial angle equally;
4, the 2nd WDM filter plate selected in step 1 is bonded on the interface of four optical fiber collimators by glue, then high-temperature baking solidification.It should be noted that time bonding that 2nd WDM filter plate should cover the light core of optical fiber A and optical fiber B in four optical fiber collimators, but the light core of optical fiber C and optical fiber D can not be covered;
5, the WDM filter plate selected in step 1 is bonded in outside lens by glue, then high-temperature baking solidification;
6, respectively by the assembly of lens, a WDM filter plate in above-mentioned steps 5 and step 4 first of four optical fiber collimators, the assembly of the 2nd WDM filter plate is placed on adjustment rack, adjust according to related optical parameter, make optical fiber C to optical fiber A, when Insertion Loss between optical fiber D to optical fiber B reaches optimum coupling simultaneously, stick with glue first the-the 2nd WDM filter plate 1 assembly connecing lens-the one WDM filter plate assembly, four optical fiber collimators, then ultraviolet irradiation and high-temperature baking solidification;
7, respectively the assembly of four optical fiber collimators in above-mentioned steps 6 and double-fiber collimator are placed on adjustment rack, adjust according to related optical parameter, make it to reach optimum coupling position, then couple together with major diameter glass tube and glue.
In sum, isolation, owing to successively have passed through a WDM filter plate 1 and the 2nd WDM filter plate 2, is doubled by the present invention.WDM device of the present invention can be binary channels device simultaneously, reduces the volume of device, with low cost, has higher reliability.
Claims (10)
1. a WDM device, is characterized in that, comprises incident optical, lens, a WDM optical filter, the 2nd WDM optical filter and outgoing optical fiber; The light of described incident optical injection and the parallel light injecting outgoing optical fiber; A described WDM optical filter is λ 1 transmission/λ 2 reflection filter, and described 2nd WDM optical filter is that λ 1 reflects/λ 2 transmission filter; Light is after being penetrated by described incident optical, a described WDM optical filter is arrived through lens, wavelength is that the Transmission light of λ 1 crosses a described WDM optical filter, wavelength is after described lens, again arrive described 2nd WDM optical filter after the light reflection of λ 2, wavelength is that the light of λ 1 is reflected by described 2nd WDM optical filter, and wavelength is that the light of λ 2 is entered described outgoing optical fiber by described 2nd WDM filter transmission.
2. a kind of WDM device according to claim 1, is characterized in that, described WDM device is four optical fiber collimators, comprises a pair incident optical and a pair outgoing optical fiber, and described 2nd WDM optical filter only covers described a pair outgoing optical fiber.
3. a kind of WDM device according to claim 1, it is characterized in that, described WDM device also comprises first and second that axially arranges, incident optical and outgoing optical fiber is provided with in described first, lens and a WDM optical filter is provided with in described second, described first and second junction are respectively arranged with the interface be parallel to each other, and described 2nd WDM optical filter is arranged on the interface of described first.
4. a kind of WDM device according to claim 3, is characterized in that, the angle of the axis of described interface and WDM device is 82 °.
5. a method for making for the WDM device as described in claim 1-4 any one, is characterized in that, comprise the steps:
Described 2nd WDM filter plate is arranged on the position of blocking outgoing optical fiber;
A described WDM filter plate is arranged on lens rear;
When a described WDM filter plate and the 2nd WDM filter plate are installed, incident optical, lens, a WDM optical filter, the 2nd WDM optical filter and outgoing optical fiber are placed on adjustment rack, adjust according to related optical parameter, make the Insertion Loss between incident optical to outgoing optical fiber reach optimum coupling, afterwards a described WDM filter plate and the 2nd WDM filter plate are installed fixing.
6. the method for making of WDM device according to claim 5, it is characterized in that, described WDM device also comprises first and second that axially arranges, incident optical and outgoing optical fiber is provided with in described first, lens are provided with by described second, a described WDM optical filter is arranged on the lens rear in second, described first and second junction are respectively arranged with the interface be parallel to each other, and are arranged on the interface of described first by described 2nd WDM optical filter.
7. the method for making of the WDM device according to claim 5 or 6, is characterized in that, a described WDM filter plate is bonded on lens by glue, then high-temperature baking solidification.
8. the method for making of WDM device according to claim 6, is characterized in that, described 2nd WDM filter plate is bonded on described interface by glue, then high-temperature baking solidification.
9. a WDM, it is characterized in that, comprise if the WDM device in claim 1-4 as described in any one is as the first optical fiber collimator, and second optical fiber collimator, the number of fibers of described first optical fiber collimator is the twice of described second optical fiber collimator number of fibers, described second optical fiber collimator is aimed at described first optical fiber collimator, and the wavelength that the first optical fiber collimator clump the one WDM filter transmission is gone out is that the light of λ 1 is injected in the optical fiber of described second optical fiber collimator.
10. WDM according to claim 9, is characterized in that, described first optical fiber collimator is four optical fiber collimators, and described second optical fiber collimator is a double-fiber collimator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272760.3A CN104280825A (en) | 2013-07-02 | 2013-07-02 | WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272760.3A CN104280825A (en) | 2013-07-02 | 2013-07-02 | WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof |
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| CN104280825A true CN104280825A (en) | 2015-01-14 |
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| CN201310272760.3A Pending CN104280825A (en) | 2013-07-02 | 2013-07-02 | WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974524A (en) * | 2016-07-29 | 2016-09-28 | 四川天邑康和通信股份有限公司 | Making method of wavelength division multiplexer |
| CN107817558A (en) * | 2016-09-14 | 2018-03-20 | 苏州旭创科技有限公司 | Optical wavelength division multiplexing device |
| CN109212669A (en) * | 2018-09-28 | 2019-01-15 | 中通服咨询设计研究院有限公司 | A kind of ultra-compact multichannel wavelength division multiplexer for 5G optical-fiber network |
| CN113009634A (en) * | 2021-04-06 | 2021-06-22 | 深圳市特发信息光网科技股份有限公司 | Wavelength division multiplexing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2567880Y (en) * | 2002-08-12 | 2003-08-20 | 鸿富锦精密工业（深圳）有限公司 | Wave division multiplex device |
| US20030228101A1 (en) * | 2002-06-05 | 2003-12-11 | Shu-Lin Tai | High reflection isolation device |
| CN2850146Y (en) * | 2005-07-26 | 2006-12-20 | 周华丽 | High-isolation degree wavelength division multiplexer/de-multiplexer |
| CN201886168U (en) * | 2010-12-16 | 2011-06-29 | 上海中科光纤通讯器件有限公司 | Wavelength division multiplexer |
| CN202372662U (en) * | 2011-12-23 | 2012-08-08 | 上海中科光纤通讯器件有限公司 | Multi-path integrated optical isolator |
-
2013
- 2013-07-02 CN CN201310272760.3A patent/CN104280825A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030228101A1 (en) * | 2002-06-05 | 2003-12-11 | Shu-Lin Tai | High reflection isolation device |
| CN1466303A (en) * | 2002-06-05 | 2004-01-07 | �踻�����ܹ�ҵ(����)����˾ | WDM device |
| CN2567880Y (en) * | 2002-08-12 | 2003-08-20 | 鸿富锦精密工业（深圳）有限公司 | Wave division multiplex device |
| CN2850146Y (en) * | 2005-07-26 | 2006-12-20 | 周华丽 | High-isolation degree wavelength division multiplexer/de-multiplexer |
| CN201886168U (en) * | 2010-12-16 | 2011-06-29 | 上海中科光纤通讯器件有限公司 | Wavelength division multiplexer |
| CN202372662U (en) * | 2011-12-23 | 2012-08-08 | 上海中科光纤通讯器件有限公司 | Multi-path integrated optical isolator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974524A (en) * | 2016-07-29 | 2016-09-28 | 四川天邑康和通信股份有限公司 | Making method of wavelength division multiplexer |
| CN107817558A (en) * | 2016-09-14 | 2018-03-20 | 苏州旭创科技有限公司 | Optical wavelength division multiplexing device |
| CN109212669A (en) * | 2018-09-28 | 2019-01-15 | 中通服咨询设计研究院有限公司 | A kind of ultra-compact multichannel wavelength division multiplexer for 5G optical-fiber network |
| CN109212669B (en) * | 2018-09-28 | 2020-05-19 | 中通服咨询设计研究院有限公司 | Ultra-compact multi-path wavelength division multiplexer for 5G optical network |
| CN113009634A (en) * | 2021-04-06 | 2021-06-22 | 深圳市特发信息光网科技股份有限公司 | Wavelength division multiplexing device |
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Inventor after: Zhang Li Inventor after: Huang Chunhui Inventor after: Shen Qian Inventor after: Wang Hui Inventor before: Zhang Li Inventor before: Huang Chunhui Inventor before: Wang Hui |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG LI HUANG CHUNHUI WANG HUI TO: ZHANG LI HUANG CHUNHUI SHEN QIAN WANG HUI |
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Application publication date: 20150114 |