CN1503477A - Wave division multiplexer - Google Patents
Wave division multiplexer Download PDFInfo
- Publication number
- CN1503477A CN1503477A CNA021520518A CN02152051A CN1503477A CN 1503477 A CN1503477 A CN 1503477A CN A021520518 A CNA021520518 A CN A021520518A CN 02152051 A CN02152051 A CN 02152051A CN 1503477 A CN1503477 A CN 1503477A
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- opening
- filter
- holder
- collimator apparatus
- division multiplexer
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Abstract
A WDM device includes a first alignment device, a filter device and a second alignment device, each alignment device includes an aligning lens, the said filter device includes a fixer and a filter, in which, the said fixer has first and second through open-end, the first aperture is smaller than the second set with multiple slots on the inner wall. The said filter is fixed at the first open-end with silicon resin, the said aligning lenses are coordinated with the two open-ends and a metal ring is sleeved on the lends of the second alignment device and fixed at the second open-end.
Description
[technical field]
The invention relates to a kind of wavelength division multiplexer, Adjustable structure and the firm wavelength division multiplexer of assembling back structure during especially about an assembling.
[background technology]
The requirement of continuous growth that transmission capacity is required along with communication network and network interaction, flexibility, the demand of wavelength division multiplexer increases day by day.The function of wavelength division multiplexer is to utilize the light of different wave length not disturb mutually in Optical Fiber Transmission, and the light that sees through the various different wave lengths of certain frequency spacing transmits mass data.
Existing three port wavelength division multiplexers are made up of two collimator apparatuses and a filter.For guaranteeing the low transmission loss of wavelength division multiplexer, the position of two collimator apparatuses and filter will be in certain accuracy rating.Relevant for this, several different methods and structure are provided in the prior art.The cost cost of think of and manufacture difficulty and equipment, existing market generally adopt film filter plate assembling mode to make wavelength division multiplexer, on the end face by the collimation device of UV glue filter (as the film filter plate) to two collimator apparatuses.But the size of filter is less, operation inconvenience, and also in a single day filter be immobilizated on the collimator apparatus, and then can not be adjusted again.
The arrangement position that is pasted with the collimator apparatus of filter and another collimator apparatus is by multilayer sleeve such as glass bushing and metal sleeve sealed package, and with the viscose glue bonding, then welding is fixing again, thereby constitutes a wavelength division multiplexer that is subjected to mechanical protection.But loosening, distortion or dislocation because the temperatures involved that causes when being welded, easily take place in the filter and the position of collimator apparatus aimed at best optical property before welding, thereby cause the increase of light insertion loss.
[summary of the invention]
The purpose of this invention is to provide a kind of wavelength division multiplexer, its structure is firm, can regulate the position of each device during encapsulation easily, effectively.
The object of the present invention is achieved like this: a kind of wavelength division multiplexer is provided, comprise first collimator apparatus, filter and second collimator apparatus, this two collimator apparatus respectively comprises collimation lens, and this filter comprises a filter, and this filter also comprises a holder.Described holder offers first opening and second opening that connects, and the aperture of this first opening is less than the aperture of second opening, and this filter is immobilizated in this holder; This first collimator apparatus and second collimator apparatus match with first opening and second opening of this holder respectively, and this second opening has the inner space that can finely tune mutually when second collimator apparatus is matched with this holder.
As a further improvement on the present invention, the inwall of second opening of filter holder offers a plurality of grooves, and further is arranged with a becket on the collimating lens of second collimator apparatus, and second opening of this becket and holder is fixing mutually.
Compared to prior art, filter of the present invention is by a holder fixing, and this holder has first opening and second opening, during assembling, first opening of this holder and second opening match with first collimator apparatus and second collimator apparatus respectively, two collimator apparatuses are played the role of positioning, thereby reduce adjusting time light, need only carry out axially or/and radially fine adjustment get final product.The wavelength division multiplexer of this kind structure, and cooperates by holder and two collimator apparatuses location in it by holder fixing filter, and its structure is more firm.
Adopt the wavelength division multiplexer of this kind structure, filter is to match with second collimator apparatus by becket, and structure is more firm.Filter matches with second collimator apparatus, and is by the groove point glue of holder, easy to operate.And the assembling of structure of the present invention does not directly contact between filter and the collimating lens, the misoperation when having avoided owing to viscose glue, and pollute the end surfaces of this filter and collimator apparatus, thus influence its optical property.
[description of drawings]
Fig. 1 is the sectional view in the wavelength division multiplexer assembling of the present invention.
Fig. 2 is the sectional view after the wavelength division multiplexer assembling of the present invention.
Fig. 3 is the schematic perspective view of holder in the wavelength division multiplexer of the present invention.
[embodiment]
See also Fig. 1 and Fig. 2, wavelength division multiplexer 10 of the present invention comprises first collimator apparatus (being single port collimator apparatus 31 in the present embodiment), filter 29 and second collimator apparatus (being dual-port collimator apparatus 27 in the present embodiment), and this two collimator apparatus 27,31 is positioned over the both sides of this filter 29 respectively.One metal sleeve 30 is sheathed on complies with on above-mentioned arrangement good two collimator apparatuses 27,31 and filter 29.
This dual-port collimator apparatus 27 comprises two optical fiber contact pins 16 and first collimating lens (Graded Index Lens, GRIN Lens) 22.This pair optical fiber contact pins 16 comprises input optical fibre 18 and mirror based fiber optica 20, and the input light of 22 pairs of input optical fibres 18 of this collimating lens collimates, and transfers to filter 29 afterwards, and mirror based fiber optica 20 receives the reverberation that reflects through filter 29.This pair optical fiber contact pins 16 inserts in the glass bushing 14; these glass bushing 14 outer metal tubes 12 that further are arranged with; to protect this pair optical fiber contact pins 16 and collimating lens 22; the length of the length of this metal tube 12 and this glass bushing 14 is suitable; and less than the length summation of this pair optical fiber contact pins 16 with collimating lens 22; i.e. these metal tube 12 complete sheathed this pair optical fiber contact pins 16; but only partly sheathed firmly this collimating lens 22; exposing an end of this collimating lens 22, and on this end, be arranged with becket 25.
This filter 29 comprises holder 26 and filter 24, and this filter 24 can be a film filter plate, and these holder 26 1 ends fix this filter 24, and the other end is used for matching with becket 25.Please consult Fig. 3 simultaneously, the cylinder tubbiness that this holder 26 is made for metal material, it has circle first opening 21 and second opening 23 that connects, and the diameter of this first opening 21 is less than the diameter of second opening 23, this filter 24 is immobilizated in this holder 26 and near the inwall of first opening 21, the external diameter of this filter 24 is slightly less than the aperture of this second opening 23, and greater than the aperture of first opening 21 and the external diameter of first collimating lens 22, so that luminous energy sees through this first opening 21 and transfers to single port collimator apparatus 31.Second opening 23 is in order to the becket 25 on reception, fixing first collimating lens 22, and the external diameter of becket 25 is slightly less than the aperture of this second opening 23, thereby second opening 23 has the inner space that can finely tune mutually when dual-port collimator apparatus 27 is matched with this holder 26, so that this dual-port collimator apparatus 27 can carry out in this second opening 23 axially and radiai adjustment.In addition, offer a plurality of grooves 231 (in the present embodiment being four) on second opening 23, this groove 231 extends axially along the edge inwall of opening 23, with convenient some glue.
This single port collimator apparatus 31 comprises second collimating lens 34 and single fiber contact pin 32, and this single fiber contact pin 32 comprises an output optical fibre 38.Single fiber contact pin 32 and these second collimating lens, 34 outer glass bushings 36 that are arranged with, and these glass bushing 36 outer metal tubes 37 that also are arranged with, this glass bushing 36 is suitable with the length of metal tube 37, and all less than the length summation of the single fiber contact pin 32 and second collimating lens 34, so that this second collimating lens 34 partly is exposed to outside this two sleeve pipe 36,37.
During assembling, filter 24 mat silicon resin glues are bonded in first opening, 21 places in this holder 26, and with the inwall keeping parallelism of this first opening 21.Because silicones can solidify between 20-150 ℃, it has low-down poplar mode coefficient (E＜500psi) and very high thermal diffusion coefficient (α=180-250 10-6 ℃-1), typical in DC 577 silicones, be suitable for the glass of thermal mismatching and the bonding between the metal.To insert in second opening 23 of holder 26 by first collimating lens 22 that is arranged with becket 25 of the good dual-port collimator apparatus 27 of silicon resin glue fixing afterwards, adjust position between the two, when its optical property reaches best, silicon resin glue is put the groove 231 of glue to holder 26, and then fixing this becket 25 and holder 26.The dual-port collimator apparatus 27 that will have filter 29 is positioned over respectively in the metal tube 30 with single port collimator apparatus 31, second collimating lens 34 of single port collimator apparatus 31 is aimed at first opening 21 of this holder 26, and insert in this first opening 21, the position of this single port collimator apparatus 31 of telescopic adjustment, when the insertion loss of wavelength division multiplexer 10 during, fix this two collimator apparatus in this metal tube 30 less than 0.1dB.
Claims (9)
1. wavelength division multiplexer, comprise: first collimator apparatus, filter and second collimator apparatus, this two collimator apparatus respectively comprises collimation lens, this filter comprises a filter, it is characterized in that: this filter also comprises a holder, described holder offers first opening and second opening that connects, and the aperture of this first opening is less than the aperture of second opening, and this filter is immobilizated in this holder; This first collimator apparatus and second collimator apparatus match with first opening and second opening of this holder respectively, and this second opening has the inner space that can finely tune mutually when second collimator apparatus is matched with this holder.
2. wavelength division multiplexer as claimed in claim 1 is characterized in that the collimating lens of this first collimator apparatus is positioned first opening of holder, and the collimating lens of this second collimator apparatus is matched with second opening of holder.
3. wavelength division multiplexer as claimed in claim 1 is characterized in that being arranged with a becket on the collimating lens of this second collimator apparatus, this becket match with second opening of holder and locate, fixing second collimator apparatus is in this filter.
4. wavelength division multiplexer as claimed in claim 3 is characterized in that this becket is immobilizated in this holder by silicones.
5. wavelength division multiplexer as claimed in claim 4 is characterized in that this holder offers a plurality of grooves in the inwall of second opening, and this silicones is imported by the groove of this holder.
6. wavelength division multiplexer as claimed in claim 1 is characterized in that this first collimator apparatus is the single port collimator apparatus.
7. wavelength division multiplexer as claimed in claim 1 is characterized in that this second collimator apparatus is the dual-port collimator apparatus.
8. wavelength division multiplexer as claimed in claim 1 is characterized in that this filter is retained on first opening part near holder.
9. wavelength division multiplexer as claimed in claim 1 is characterized in that this filter is the film filter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021520518A CN1503477A (en) | 2002-11-23 | 2002-11-23 | Wave division multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021520518A CN1503477A (en) | 2002-11-23 | 2002-11-23 | Wave division multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1503477A true CN1503477A (en) | 2004-06-09 |
Family
ID=34234605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021520518A Pending CN1503477A (en) | 2002-11-23 | 2002-11-23 | Wave division multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1503477A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049304A (en) * | 2014-07-04 | 2014-09-17 | 国家电网公司 | Multi-channel bidirectional reversible wavelength division multiplexer |
| CN104730646A (en) * | 2015-04-17 | 2015-06-24 | 黄石晨信光电有限责任公司 | Focusing-type optical wavelength division multiplexer |
| 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 |
| CN114280731A (en) * | 2021-12-27 | 2022-04-05 | 苏州鼎芯光电科技有限公司 | High-precision wavelength division multiplexer and preparation method thereof |
-
2002
- 2002-11-23 CN CNA021520518A patent/CN1503477A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049304A (en) * | 2014-07-04 | 2014-09-17 | 国家电网公司 | Multi-channel bidirectional reversible wavelength division multiplexer |
| CN104049304B (en) * | 2014-07-04 | 2016-09-07 | 国家电网公司 | Multichannel bidirectional reversible wave division multiplexer |
| CN104730646A (en) * | 2015-04-17 | 2015-06-24 | 黄石晨信光电有限责任公司 | Focusing-type optical wavelength division multiplexer |
| CN104730646B (en) * | 2015-04-17 | 2018-01-12 | 黄石晨信光电有限责任公司 | A kind of focusing light wavelength division multiplexing |
| 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 |
| CN114280731A (en) * | 2021-12-27 | 2022-04-05 | 苏州鼎芯光电科技有限公司 | High-precision wavelength division multiplexer and preparation method thereof |
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