CN2567880Y - Wave division multiplex device - Google Patents
Wave division multiplex device Download PDFInfo
- Publication number
- CN2567880Y CN2567880Y CN02272488U CN02272488U CN2567880Y CN 2567880 Y CN2567880 Y CN 2567880Y CN 02272488 U CN02272488 U CN 02272488U CN 02272488 U CN02272488 U CN 02272488U CN 2567880 Y CN2567880 Y CN 2567880Y
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- China
- Prior art keywords
- optical fiber
- collimator apparatus
- fiber contact
- wdm device
- contact pins
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Abstract
The utility model relates to a wave division multiplex device, which comprises a first collimating device, a second collimating device and a wave filtering component, wherein, the first collimating device comprises a double optical fiber inserting needle and a collimating lens, double optical fiber are accommodated in the double optical fiber inserting needle, the second collimating device comprises a single fiber inserting needle and the collimating lens, and optical fiber is accommodated in the single fiber inserting needle. The wave filtering component comprises a first wave filtering sheet penetrated through an optical signal having definite wavelength and used for reflecting the optical signal having the other wavelength and a second wave filtering sheet used for reflecting the optical signal having the definite wavelength and penetrated through the optical signal having the other wavelength. The first wave filtering sheet is positioned between the first and the second collimating devices, and the second wave filtering sheet is positioned between the double optical fiber inserting needle of the second wave filtering sheet and the collimating lens and also positioned in a light path of an output reflecting light signal.
Description
[technical field]
The utility model is about a kind of WDM device, especially the WDM device of a high-isolation.
[background technology]
In recent years, development communication technologies is rapid, the transmission of signal such as video, image makes transmission capacity constantly promote, directly require maximum to utilize bandwidth of an optical fiber, optical wavelength-division multiplex device (WDM) is that maximum is utilized one of effective scheme of fiber bandwidth, it can transmit a plurality of wavelength optical signals simultaneously in an optical fiber, thereby improves transmission capacity and reduce communication system cost.
Please refer to Fig. 1, United States Patent (USP) 5,917, No. 626 announcements one existing WDM device, this WDM device comprises first optical fiber contact pins 500, second optical fiber contact pins 462, two GRIN Lens 410 and 411, one substrate of glass 420, a film filter plate 421.First optical fiber contact pins, 500 tools, two through holes are to intert two optical fiber, 401,402, the second optical fiber contact pins, 462 tools, one through hole to intert optical fiber 461.A plurality of wavelength (the λ of tool
1, λ
2... λ
n) optical signals optical fiber 401 input and export for collimated light beam by GRIN Lens 410 collimations, its medium wavelength is λ
1Light signal can pass through film filter plate 421, other wavelength (λ
2... λ
n) light signal then by film filter plate 421 reflection, the wavelength that sees through film filter plate 421 is λ
1Light signal assemble the back by optical fiber 461 outputs through GRIN Lens 411, and the wavelength that is reflected by film filter plate 421 is λ
2... λ
nReflected light signal assemble the back through GRIN Lens 410 and export by optical fiber 402.
The filter plate that is usually used in WDM device, the isolation that its output sees through the light signal of nonspecific wavelength in the transmission end of wavelength can reach more than the 35dB, but the isolation of specific wavelength only is about 17dB in the output reflection reflection of light end, so can not be applied to high performance optical communication system.
[summary of the invention]
The purpose of this utility model is to provide a kind of compact conformation and the high WDM device of isolation.
The purpose of this utility model is achieved in that provides a kind of WDM device, it comprises first collimator apparatus, second collimator apparatus and a filtering unit, first collimator apparatus and second collimator apparatus are oppositely arranged and are located along the same line, this first collimator apparatus comprises a pair of optical fiber contact pins and collimation lens, the two is oppositely arranged, and two optical fiber are contained in two optical fiber contact pins, this second collimator apparatus comprises a single fiber contact pin and collimation lens, one optical fiber is contained in this single fiber contact pin, this filtering unit comprises and can and reflect first filter plate of all the other wavelength light signals and second filter plate that reflection specific wavelength light signal also passes through all the other wavelength light signals by the specific wavelength light signal, this first filter plate be positioned at this first, between second collimator apparatus, this second filter plate and is arranged in the light path of output reflection light signal between two optical fiber contact pins and collimating lens of this first collimator apparatus.
Compare with existing WDM device, the utlity model has following advantage: utilize a filtering unit, realize that by the secondary filtering process two output ports of WDM device all have a high isolation degree, and compact conformation, satisfy the high performance demands of optical communication system to WDM device.
[brief description of drawingsfig]
Fig. 1 is the schematic diagram of existing WDM device.
Fig. 2 is the profile of the utility model WDM device.
Fig. 3 is the profile of another WDM device of the present utility model.
Fig. 4 is the light path schematic diagram of the utility model WDM device.
[embodiment]
See also Fig. 2, WDM device 1 of the present utility model comprises first collimator apparatus 2, second collimator apparatus 3, a filtering unit 4, an input optical fibre 51 and first, second output optical fibre 52,53.First collimator apparatus 2 has a pair of optical fiber contact pins 21 and first GRIN Lens 22, and the two roughly is cylindric, equal diameters and coaxial setting.Wherein, two optical fiber contact pins 21 are offered two parallel via holes (indicate) in order to up-winding fiber 51,52, and the adjacent face of this pair optical fiber contact pins 21 and first GRIN Lens 22 is respectively inclined end face 211,221 about one 8 degree in order to raising return loss.Two optical fiber contact pins 21 and inclined end face 211 relative other ends offer the two taper openings 212,213 that communicate respectively with two through holes so that optical fiber imports.First GRIN Lens 22 has the first relative end face 221 and second end face (indicating), and the inclined end face of first end face 221 and two optical fiber contact pins 21 211 is parallel and be oppositely arranged, and the maintenance certain distance is to form a gap between the two.Second end face is a perpendicular end surface.First collimator apparatus 2 further comprises a glass bushing 23 and a metal sleeve 24.The internal diameter of glass bushing 23 equates substantially that with the diameter of the two optical fiber contact pins 21 and first GRIN Lens 22 it is sheathed on this pair optical fiber contact pins 21 and this pair optical fiber contact pins 21 and first GRIN Lens 22 are protected with fixing in first GRIN Lens, 22 outsides.Metal sleeve 24 is sheathed on glass bushing 23 outsides with the two optical fiber contact pins 21 of further protection and first GRIN Lens 22.
Second collimator apparatus 3 and first collimator apparatus, 2 structural similarities, it comprises a single fiber contact pin 31 and second GRIN Lens 32, the two all is cylindric and is oppositely arranged at certain intervals.The two adjacent face 311,321 be arranged in parallel, is inclined plane about 8 degree in order to improve return loss.Single fiber contact pin 31 central authorities offer a through hole (indicate), and a tapered opening that communicates with through hole 312 is offered so that the optical fiber importing in its other end relative with inclined end face 311.This second collimator apparatus 3 further comprises a glass bushing 33 and a metal sleeve 34.Glass bushing 33 internal diameters equate substantially that with the diameter of the single fiber contact pin 31 and second GRIN Lens 32 it is sheathed on this single fiber contact pin 31 and the single fiber contact pin 31 and second GRIN Lens 32 are protected with fixing in second GRIN Lens, 32 outsides.It is outer with the further protection single fiber contact pin 31 and second GRIN Lens 32 that metal sleeve 34 is sheathed on glass bushing 33.
First collimator apparatus 2 and second collimator apparatus 3 are relatively arranged on the same straight line, between the two at a distance of certain distance.The input optical fibre 51 and second output optical fibre 53 insert through hole from tapered opening 212,213 respectively, and its terminal inclined end face 211 with two optical fiber contact pins 21 flushes.First output optical fibre 52 enters through hole from tapered opening 312, and its end flushes with the inclined end face 311 of single fiber contact pin 31.Fill fixing between optical fiber and through hole, tapered opening with viscose glue.
Filtering unit 4 comprises first filter plate 41 and second filter plate 42, the light signal that first filter plate 41 can be by specific wavelength and reflect the light signal of its commplementary wave length wherein, the characteristic that second filter plate, 42 tools are opposite with first filter plate, promptly it can reflect the light signal of specific wavelength and can allow the light signal of its commplementary wave length to pass through.First filter plate 41 is between first collimator apparatus 2 and second collimator apparatus 3, its Pasting is on second end face of first GRIN Lens 22, second filter plate 42 is between the two optical fiber contact pins 21 and first GRIN Lens 22 in the crack, and be arranged in the light path of output reflection light signal, its Pasting is in first end face 221 of first GRIN Lens 22, but also viscose glue in the inclined end face 211 of two optical fiber contact pins 21.
This WDM device 1 also further comprises outside an outer tube (indicating) sheathed first, second collimator apparatus 2,3 and the filtering unit 4 to encapsulate this WDM device 1.
See also Fig. 3, another specific embodiment of the utility model WDM device.This WDM device comprises first collimator apparatus 6, second collimator apparatus 7 and a filtering unit 8.First collimator apparatus 6 further comprises a pair of optical fiber contact pins 61, a GRIN Lens 62, a glass bushing 63 and a metal sleeve 64.Two optical fiber contact pins 61 roughly are cylindric, equal diameters and coaxial setting with GRIN Lens 62.The two abutting end faces (indicating) of two optical fiber contact pins 61 and GRIN Lens 62 are respectively inclined end face about 8 degree in order to return loss to be provided, and biend is parallel and keep certain distance to form a gap.Two optical fiber contact pins 61 are offered two parallel via holes to intert input, output optical fibre respectively about the central shaft symmetry.This input, the terminal inclined end face with two optical fiber contact pins 61 of output optical fibre flush.GRIN Lens 62 tools one and inclined end face opposing vertical end face (indicating), an internal diameter is sheathed on outside two optical fiber contact pins 61 with the two optical fiber contact pins 61 of fixing protection with the glass bushing 63 that the diameter of two optical fiber contact pins 61 equates substantially.One metal sleeve 64 is sheathed on glass bushing 63 and GRIN Lens 62 outsides with two optical fiber contact pins 61 of further protection and GRIN Lens 62, and 64 of GRIN Lens 62 and metal sleeves are filled with viscose glue and fixed.Filtering unit 8 comprises that first filter plate 81 and second filter plate, 82, the first filter plates, 81 viscose glues are fixed on the perpendicular end surface of GRIN Lens 62.Second filter plate 82 and is arranged in the light path of output reflection light signal between two optical fiber contact pins 61 and GRIN Lens 62.Its Pasting is on the inclined end face of two optical fiber contact pins 61, and also Pasting is on the inclined end face of GRIN Lens 62.
See also Fig. 4, the light signal 91 of a plurality of wavelength of a tool is through input optical fibre 51 inputs, and this light signal 91 is collimated light beam through first GRIN Lens, 22 collimations, because first filter plate 41 only can be by specific wavelength (as λ
1) light signal, so in the collimated light beam specific wavelength (as λ
1) light signal can form first output beam 92 by first filter plate 41, this first output beam 92 is after the GRIN Lens 32 of second collimator apparatus is assembled, by 52 outputs of first output optical fibre.The light signal of its commplementary wave length forms folded light beam 93 through 41 reflections of first filter plate.Because filter plate is the light signal of transmission specific wavelength (as λ 1) fully, a small amount of specific wavelength is (as λ
1) light signal can and enter in the folded light beam 93 by the reflection of first filter plate 41.This folded light beam 93 is assembled to second filter plate 42 through first GRIN Lens 22.Because the specific wave property of selecting of second filter plate 42, a spot of specific wavelength is (as λ in the folded light beam 93
1) light signal is reflected, and the light signal of its commplementary wave length forms second output beam 94 by this second filter plate 42, by 53 outputs of second output optical fibre.The transmission end of this WDM device to specific wavelength (as λ
1) in addition the isolation of light signal can reach more than the 40dB, reflection end to specific wavelength (as λ
1) the isolation of light signal also can reach more than the 40dB so tool high isolation degree.
Claims (10)
1. WDM device, it comprises first collimator apparatus, second collimator apparatus and a filtering unit, first collimator apparatus and second collimator apparatus are oppositely arranged and are located along the same line, this first collimator apparatus comprises a pair of optical fiber contact pins and collimation lens, the two is oppositely arranged, and this pair optical fiber contact pins is accommodated two optical fiber, this second collimator apparatus comprises a single fiber contact pin and collimation lens, and this single fiber contact pin is accommodated an optical fiber, it is characterized in that: this filtering unit comprises and can and reflect first filter plate of all the other wavelength light signals and second filter plate that reflection specific wavelength light signal also passes through all the other wavelength light signals by the specific wavelength light signal, this first filter plate be positioned at this first, between second collimator apparatus, this second filter plate between two optical fiber contact pins and collimating lens of this first collimator apparatus, and be arranged in output above-mentioned reflected light signal light path.
2. WDM device as claimed in claim 1 is characterized in that first, second relative end face of collimating lens tool of this first collimator apparatus, and two optical fiber contact pins of this first end face and this first collimator apparatus are adjacent.
3. WDM device as claimed in claim 2 is characterized in that this first filter plate is fixed in second end face of the collimating lens of this first collimator apparatus.
4. WDM device as claimed in claim 2 is characterized in that this second filter plate is fixed in first end face of the collimating lens of this first collimator apparatus.
5. WDM device as claimed in claim 1 is characterized in that two optical fiber contact pins tool two opposite end faces, and this second filter plate is fixed in the end face of contiguous first collimator apparatus of this pair optical fiber contact pins.
6. WDM device as claimed in claim 1 is characterized in that two optical fiber contact pins symmetries of this first collimator apparatus are offered two parallel via holes, and above-mentioned two optical fiber are interspersed in this two through hole, and the end face of this two optical fiber connector and this pair optical fiber contact pins.
7. WDM device as claimed in claim 1, it is characterized in that this first collimator apparatus further comprises a glass bushing and a metal sleeve, this glass bushing is sheathed on the two optical fiber contact pins and the collimating lens outside of this first collimator apparatus, and this metal sleeve is sheathed on this glass bushing outside.
8. WDM device as claimed in claim 7 is characterized in that the collimating lens of this this first collimator apparatus is fixed in this glass bushing by viscose glue.
9. WDM device as claimed in claim 1, it is characterized in that this second collimator apparatus further comprises a glass bushing and a metal sleeve, this glass bushing is sheathed on the single fiber contact pin and the collimating lens outside of this second collimator apparatus, and this metal sleeve is sheathed on this glass bushing outside.
10. WDM device as claimed in claim 1 is characterized in that this WDM device further comprises sleeve pipe outside this WDM device of encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02272488U CN2567880Y (en) | 2002-08-12 | 2002-08-12 | Wave division multiplex device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02272488U CN2567880Y (en) | 2002-08-12 | 2002-08-12 | Wave division multiplex device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2567880Y true CN2567880Y (en) | 2003-08-20 |
Family
ID=33737174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02272488U Expired - Lifetime CN2567880Y (en) | 2002-08-12 | 2002-08-12 | Wave division multiplex device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2567880Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364878A (en) * | 2013-08-05 | 2013-10-23 | 四川飞阳科技有限公司 | Optical wavelength division multiplexing device and shell thereof |
| CN103364880A (en) * | 2013-07-04 | 2013-10-23 | 武汉光迅科技股份有限公司 | Motor photo-switch integrated with wave combining function |
| CN104280825A (en) * | 2013-07-02 | 2015-01-14 | 上海中科股份有限公司 | WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof |
| CN105652382A (en) * | 2016-03-21 | 2016-06-08 | 苏州伽蓝致远电子科技股份有限公司 | Novel optical wavelength division multiplexer |
| CN105652381A (en) * | 2016-03-21 | 2016-06-08 | 苏州伽蓝致远电子科技股份有限公司 | Efficient low-loss wavelength division multiplexer |
| WO2021082445A1 (en) * | 2019-10-31 | 2021-05-06 | 福州高意光学有限公司 | Optical system capable of achieving multi-wavelength laser beam combining and splitting |
| WO2021088180A1 (en) * | 2019-11-08 | 2021-05-14 | 武汉光迅科技股份有限公司 | Bidi device, optical module, and production method |
| 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 |
-
2002
- 2002-08-12 CN CN02272488U patent/CN2567880Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280825A (en) * | 2013-07-02 | 2015-01-14 | 上海中科股份有限公司 | WDM device and manufacturing method thereof, WDM wavelength division multiplexer and manufacturing method thereof |
| CN103364880A (en) * | 2013-07-04 | 2013-10-23 | 武汉光迅科技股份有限公司 | Motor photo-switch integrated with wave combining function |
| CN103364878A (en) * | 2013-08-05 | 2013-10-23 | 四川飞阳科技有限公司 | Optical wavelength division multiplexing device and shell thereof |
| CN103364878B (en) * | 2013-08-05 | 2015-09-30 | 四川飞阳科技有限公司 | A kind of light wavelength division multiplexing device and housing thereof |
| CN105652382A (en) * | 2016-03-21 | 2016-06-08 | 苏州伽蓝致远电子科技股份有限公司 | Novel optical wavelength division multiplexer |
| CN105652381A (en) * | 2016-03-21 | 2016-06-08 | 苏州伽蓝致远电子科技股份有限公司 | Efficient low-loss wavelength division multiplexer |
| WO2021082445A1 (en) * | 2019-10-31 | 2021-05-06 | 福州高意光学有限公司 | Optical system capable of achieving multi-wavelength laser beam combining and splitting |
| WO2021088180A1 (en) * | 2019-11-08 | 2021-05-14 | 武汉光迅科技股份有限公司 | Bidi device, optical module, and production method |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120812 Granted publication date: 20030820 |