CN206892397U - A kind of low-loss type multichannel wavelength division multiplexer - Google Patents
A kind of low-loss type multichannel wavelength division multiplexer Download PDFInfo
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- CN206892397U CN206892397U CN201720048586.8U CN201720048586U CN206892397U CN 206892397 U CN206892397 U CN 206892397U CN 201720048586 U CN201720048586 U CN 201720048586U CN 206892397 U CN206892397 U CN 206892397U
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- concave mirror
- filter plate
- level crossing
- division multiplexer
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Abstract
The utility model discloses a kind of low-loss type multichannel wavelength division multiplexer, including concave mirror, right-angle prism, level crossing, glass supporter, polylith filter plate and multiple optical fiber collimators；On right-angle prism refraction incident light to first piece of filter plate, the light of the setting wavelength of filter transmission to corresponding collimater and reflect light to level crossing, the light of its commplementary wave length and reflexed to through level crossing on next filter plate；The concave mirror is arranged on some light extraction end of multichannel wavelength division multiplexer, and the convergence of rays and reflection light to level crossing, light that concave mirror reflects level crossing are reflexed on next filter plate through level crossing；Concave mirror can with filter plate be arranged on glass supporter the same side and with the level crossing Relative distribution；The concave mirror can also be arranged on level crossing, pass through concave mirror to next filter plate in glass supporter both sides, the light that certain block filter plate is reflected with filter plate Relative distribution；The utility model can greatly reduce the insertion loss of multichannel wavelength division multiplexer, improve beam quality, simple in construction and be easy to adjust, and reduce the production cost of multichannel wavelength division multiplexer.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of low-loss type suitable for high-speed transceiver
Multichannel wavelength division multiplexer.
Background technology
With the development of network multimedia technology and the explosive growth of IP operation, people propose to broadband communications technologies
Higher and higher requirement, it is desirable to obtain more preferable network service and have the lower consumption expenditure, operator is also more next
More consider to reason the performance and price of optic communication device.Wavelength-division multiplex technique obtains the pass of more and more businessmans on this basis
Note.Wavelength-division multiplex technique can take full advantage of the enormous bandwidth resource of low-loss band of optical fibers, hold the transmission of an optical fiber
Amount has very big application value and economic value than several times or tens times of single band transmission increase.
Wavelength-division multiplex technique is divided into CWDM and dense wave division multipurpose, CWDM according to the density of wavelength interval
The channel spacing of device is about 20nm, and the channel spacing value of dense wave division multiplexer is from 0.1nm to 1.6nm, due to the transmission of optical fiber
Wavelength is limited, therefore during arrangement optical channel, wavelength interval is shorter, and the optical channel that can be arranged is more, WDM cost
It is higher.With the development of Fibre Optical Communication Technology, the wavelength division multiplexer for developing multichannel obtains the concern of more and more network operators.
Multichannel wavelength division multiplexer in the market can be divided into Waveguide array type, light according to the difference of its manufacture method
Fine grating type, dielectric film filter plate type etc..Waveguide array type wavelength division multiplexer wavelength interval is small, optical channel number is more, still
Complex manufacturing technology, material homogeneity, mismachining tolerance and temperature change can all cause the increase of insertion loss, so at home
Wavelength division multiplexer market there is no commercialization also, mostly be applied to laboratory science research in.Grating type wavelength division multiplexer it is excellent
Point is high-resolution wavelength selection index system, can be separated most energy of specific wavelength with other wavelength, and side
To concentration.Grating multiplexer requires more accurate in manufacture, complicated, and the device count used is more, therefore cost
It is higher.The miniaturization for being mainly characterized by realize device in design of dielectric film type wavelength division multiplexer, signal passband is flat,
Insertion loss is low, and channel spacing degree is good.Dielectric film type wavelength division multiplexer is adapted to the spies such as batch production because compact-sized
Point, have become in the market and produce most wavelength division multiplexers.Dielectric film type wavelength division multiplexer in the fabrication process, damage by insertion
Consumption can increase with the increase of number of active lanes, largely limit the number of active lanes of dielectric film type wavelength division multiplexer.
So lacking a kind of insertion loss technology that can reduce dielectric film type wavelength division multiplexer at present, manufacture is a kind of low
It is lost, is inexpensive and simple in construction, is easy to the dielectric film type multichannel wavelength division multiplexer of adjustment.
The content of the invention
Overcome the deficiencies in the prior art of the present invention, there is provided a kind of low-loss type multichannel wavelength division multiplexer, it is simple in construction, can
With effective Solving Multichannel wavelength division multiplexer insertion loss it is big the problem of, compact structure design reduce multichannel wavelength division multiplexing
The volume of device, can be applied in high-speed transceiver.
A kind of low-loss type multichannel wavelength division multiplexer, including concave mirror, right-angle prism, level crossing, glass supporter, polylith
Filter plate and multiple optical fiber collimators；The right-angle prism reflects incident light to first piece of filter plate, filter transmission setting ripple
Long light is to corresponding collimater and reflects light to level crossing, the light of its commplementary wave length and reflexes to next filtering through level crossing
Piece, polylith optical filter transmits the light of setting wavelength to corresponding collimater successively, and reflects the light of its commplementary wave length to level crossing
Or concave mirror；The concave mirror can be arranged on glass supporter the same side, the light that concave mirror reflects level crossing with filter plate
Line is assembled and reflection light is to level crossing；The concave mirror can also be with filter plate Relative distribution in glass supporter both sides, general
The light of certain block filter plate reflection is by concave mirror to next piece of filter plate.
Concave mirror is added in the light path of multichannel wavelength division multiplexer, utilizes convergence and reflection of the concave mirror for optical signal
Effect, concave mirror assembles the light dissipated in transmitting procedure, while reflection light ensures optical signal with identical to next part
Angle enter each filter plate, have no effect on propagation of the optical signal in subsequent optical path.
In order to further reduce product size, it is preferred that the concave mirror can be arranged on the same side with filter plate, will be recessed
Face mirror is arranged on the position at some light extraction end, is easily installed concave mirror, simplifies the manufacturing process of product, and concave mirror is set
In the same side of filter plate, concave mirror can be finely adjusted, make the structure of product there is certain flexibility can easily be accommodated.
In order to further simplify the structure of product, it is preferred that the concave mirror can be arranged on the centre of level crossing, that is, exist
One being set among level crossing close groove being thought with concave mirror size, concave mirror is adhered in groove, obtains structure more
Add succinct product, the volume of further compressed products.
In order to reasonably utilize the converging action of concave mirror, it is preferred that the concave mirror is placed on the N/2+1 light extraction end
Position, light occurs to assemble by concave mirror and reflection light to level crossing, light reflexes to next by level crossing again
Filter plate；The radius of curvature of concave mirror sets and set according to product demand, and concave mirror assembles flashlight in this position, makes letter
Number light energy is concentrated, and causes the numerical aperture of the optical signal after assembling to meet collimater numerical aperture so that after filtering
The completely collimated device of the luminous energy that piece passes through receives, and reduces the divergence loss of luminous energy.
In order that product structure is compacter, it is preferred that the width of the filter plate and the width of concave mirror are close, filter
The width size of wave plate and concave mirror should all meet to receive incident ray completely, the width of filter plate and concave mirror
Width is close, and can preferably be installed, while assembling flashlight reduces product insertion loss, the body of compressed products
Product, so as to ensure light extraction end filter plate close-packed arrays.And reduce light path, further reduce the insertion loss of product, reduce production
The production cost of product.
The product of said structure can reduce the insertion loss of multichannel wavelength division multiplexer, improve beam quality, reduce more
The production cost of passage wavelength division multiplexer.
In order to meet the existing market demand, it is preferred that the filter plate is provided with N blocks, and N is not less than 8.So as to N
Output waveband is λ respectively1、λ2、λ3、λ4、λ5、λ6、λ7、λ8、λ9.......λN-1、λN, when number of active lanes increases, concave mirror pair
Can more fully it be utilized in the convergent effect of optical signal.
Preferably, at least one piece of the number of the concave mirror, can be in increase concave mirror when number of active lanes N is excessive
Number, between concave mirror is evenly distributed in into light extraction end, and the radius of curvature of each concave mirror is identical.
Preferably, when the number of the concave mirror is more than 1, the radius of curvature size of each concave mirror is identical, simplifies product
Manufacture craft, avoid the change of concave mirror installation site caused by the curvature radius difference of concave surface, and avoid different curvature
Insufficient utilization of energy is assembled caused by the inconsistency of convergence ability of the radius for optical signal.
A kind of low-loss type multichannel wavelength division multiplexer provided by the invention, the small volume of product, can be directly integrated into
In high-speed transceiver.A kind of low-loss type multichannel wavelength division multiplexer provided by the invention, there is N number of output waveband to be respectively
λ1、λ2、λ3、λ4、λ5、λ6、λ7、λ8、λ9........λN-2、λN-1、λN.Convergence of the concave mirror for signal, answers multichannel wavelength-division
It is minimum with the light energy losses of device, reduce the insertion loss of multichannel wavelength division multiplexer.
The beneficial effects of the invention are as follows：The low-loss type multichannel wavelength division multiplexer of the present invention, can using concave mirror
The characteristic of coalescence and reflected light signal energy, energy loss of the flashlight in multichannel wavelength division multiplexer is reduced, improves tradition
Multichannel wavelength division multiplexer technique, production cost can also be saved.The dense distribution of filter plate reduces the volume of product,
The space of product is reduced, product is can apply to the high-speed transceiver for having certain volume requirement to multichannel wavelength division multiplexer
In, the scope of application is wide, it is possible to achieve industrialized production.
Brief description of the drawings
Fig. 1 is the structural representation of the multichannel wavelength division multiplexer of example 1.
Fig. 2 is the structural representation of the multichannel wavelength division multiplexer of example 2.
Fig. 3 is the multichannel wavelength division multiplexer dimensional structure diagram of the layering of example 3.
In figure：1. concave mirror；2. right-angle prism；3. level crossing；4. collimater；5. glass supporter；6. filter plate；It is 7. recessed
Face mirror；8 right-angle prisms.
Embodiment
Coordinate accompanying drawing to describe the case study on implementation of the present invention in detail below, make to be familiar with multichannel wavelength division multiplexer device correlation skill
Art personnel, it can be implemented according to the explanation of this specification.
Example 1
As shown in figure 1, this example is a kind of passage wavelength division multiplexer of low-loss type 18, the assembling process of the present embodiment is such as
Under：
Alcohol washes glass supporter 5, right-angle prism 2, level crossing 3, concave mirror 1 and polylith filter plate 6 are used first, are ensured
The cleaning on its surface, glass supporter 5 are irregular pentagon, and right-angle prism 2 is adhered into the upper part of glass supporter 5 has one tiltedly
The surface on side, level crossing 3 is bonded in the upper surface in two parallel faces of glass supporter 5, and filter plate 6 is adhered into glass supporter
5 lower surfaces are relative with level crossing 3.Concave mirror 1 and filter plate 6 are placed into the same side in this example, and relative point with level crossing 3
Cloth.
Light inlet collimater 4 passes through the incidence of glass supporter 5.Incident light enters the multichannel wavelength division multiplexing of the present embodiment
Device, optical path direction changes 180 ° after the refraction of right-angle prism 2, and refraction light to first piece of filter plate, first piece of filter plate allows
Wavelength is in λ1Light in wave band is passed through, and the light of other wavelength is reflexed on level crossing 3, then is reflected by level crossing 3, reflects light
Onto second piece of filter plate.Second piece of filter plate allows wavelength in λ2The light of wave band passes through, and the light of other wavelength reflexes to plane
On mirror 3, reflexed to by the light of level crossing 3 on the 3rd piece of filter plate.3rd piece of filter plate allows wavelength in λ3The light of wave band is saturating
Cross, the light of other wavelength is reflexed on level crossing 3, is reflexed to by the light of level crossing 3 on the 4th piece of filter plate.4th piece of filter plate
Allow wavelength in λ4The light of wave band is passed through, and the light of other wavelength is reflexed on level crossing 3, and the 5th is reflexed to by the light of level crossing 3
On block filter plate.5th piece of filter plate allows wavelength in λ5The light of wave band is passed through, and the light of other wavelength is reflexed on level crossing 3,
Reflexed to by the light of level crossing 3 on the 6th piece of filter plate.6th piece of filter plate allows wavelength in λ6The light of wave band passes through, other ripples
Long light is reflexed on level crossing 3, is reflexed to by the light of level crossing 3 on the 7th piece of filter plate.7th piece of filter plate allows wavelength
In λ7The light of wave band is passed through, and the light of other wavelength is reflexed on level crossing 3, and the 8th piece of filter plate is reflexed to by the light of level crossing 3
On.8th piece of filter plate allows wavelength in λ8The light of wave band is passed through, and the light of other wavelength is reflexed on level crossing 3, then by flat
Face mirror 3 is reflected, and light is reflexed on the concave mirror 1 placed in the 9th light extraction end position, by convergence of rays and plane of reflection mirror
On 3, then reflect by level crossing 3, reflect light on the 9th piece of filter plate, it is allowed to which wavelength is in λ9The light of wave band passes through.Other
The light of wavelength is reflexed on level crossing 3, is reflexed to by the light of level crossing 3 on next filter plate, and the tenth piece of filter plate allows ripple
Grow in λ10The light of wave band is passed through, and the light of other wavelength is reflexed on level crossing 3, then reflexes to next filtering by level crossing 3
Piece；The rest may be inferred, finally reflects light on nth block filter plate, it is allowed to which wavelength is in λNThe light of wave band passes through, by other wavelength
Light reflects back.λ is obtained at light extraction end1、λ2、λ3、λ4、λ5、λ6、λ7、λ8、λ9........λ16、λ17、λ18The light of wave band.It is described
Scheme assembles the optical signal dissipated in multichannel wavelength division multiplexing hair device using concave mirror, reduces insertion loss, the compact row of filter plate
Row have compressed the size of device, and then reduce production cost.
Example 2
As shown in Fig. 2 this example is a kind of passage wavelength division multiplexer of low-loss type 18, except concave mirror is pacified in the present embodiment
Beyond dress mode and the difference of embodiment 1, remaining structure is same as Example 1.
In the present embodiment, in a centrally disposed groove being close with concave mirror volume for level crossing 3, by concave mirror 7
It is adhered in groove, allows wavelength in λ when light is transmitted to the 8th piece of filter plate, the 8th piece of filter plate8The light of wave band passes through, its
The light of his wavelength reflexes to concave mirror 7, by convergence of rays and reflexes on the 9th piece of filter plate, it is allowed to which wavelength is in λ9Wave band
Light passes through.The light of other wavelength is reflexed on level crossing 3, is reflexed to by the light of level crossing 3 on next filter plate.Overall structure
Optical component used is few compared with example 1, simple for structure.
Example 3
As shown in figure 3, this example is a kind of passage wavelength division multiplexer of low-loss type 18, it is straight using second piece in the present embodiment
For angle prism 8 by beyond light path folding and the difference of embodiment 1, remaining structure is same as Example 1.
In the present embodiment, light is in multichannel wavelength division multiplexer transmitting procedure, when light reflexes to the 8th piece of filter plate
On, it is allowed to wavelength is in λ8The light of wave band passes through.The light of other wavelength is reflexed on right-angle prism 8, by right-angle prism anaclasis
To concave mirror 1, in anaclasis to concave mirror 1, by convergence of rays and reflex on level crossing 3, then reflexed to down by plane 3
On one filter plate；This structure is folded light path using right-angle prism, and filter plate is layered and placed, overall structure and example
1 compared to compacter, and size is more compact.
The foregoing is only the preferable implementation example of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (4)
1. a kind of low-loss type multichannel wavelength division multiplexer, including the filter of concave mirror, right-angle prism, level crossing, glass supporter, polylith
Wave plate and multiple optical fiber collimators；The right-angle prism reflects incident light to first piece of filter plate, filter transmission setting wavelength
Light to corresponding collimater and reflect light to level crossing, the light of its commplementary wave length and reflex to next filtering through level crossing
Piece, polylith optical filter transmits the light of setting wavelength to corresponding collimater successively, and reflects the light of its commplementary wave length to level crossing
Or concave mirror；The concave mirror can be arranged on glass supporter the same side, the light that concave mirror reflects level crossing with filter plate
Line is assembled and reflection light is to level crossing；The concave mirror can also be with filter plate Relative distribution in glass supporter both sides, general
The light of certain block filter plate reflection is by concave mirror to next piece of filter plate.
2. low-loss type multichannel wavelength division multiplexer as claimed in claim 1, it is characterised in that the filter plate is provided with N blocks,
N is not less than 8.
3. low-loss type multichannel wavelength division multiplexer as claimed in claim 1 or 2, it is characterised in that of the concave mirror
At least one piece of number, when number of active lanes N is excessive, concave mirror can be evenly distributed in light extraction in the number of increase concave mirror
Between end, and the radius of curvature of each concave mirror is identical.
4. low-loss type multichannel wavelength division multiplexer as claimed in claim 1, it is characterised in that the width of concave mirror and filtering
The width of piece is close.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720048586.8U CN206892397U (en) | 2017-01-12 | 2017-01-12 | A kind of low-loss type multichannel wavelength division multiplexer |
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| CN201720048586.8U CN206892397U (en) | 2017-01-12 | 2017-01-12 | A kind of low-loss type multichannel wavelength division multiplexer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526753A (en) * | 2017-01-12 | 2017-03-22 | 中国计量大学 | Low-loss-type multichannel wavelength division multiplexer |
| CN112327415A (en) * | 2020-10-12 | 2021-02-05 | 易锐光电科技(安徽)有限公司 | Wavelength division multiplexing structure |
| CN112649919A (en) * | 2020-12-26 | 2021-04-13 | 易锐光电科技(安徽)有限公司 | Wavelength division multiplexing device |
-
2017
- 2017-01-12 CN CN201720048586.8U patent/CN206892397U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526753A (en) * | 2017-01-12 | 2017-03-22 | 中国计量大学 | Low-loss-type multichannel wavelength division multiplexer |
| CN112327415A (en) * | 2020-10-12 | 2021-02-05 | 易锐光电科技(安徽)有限公司 | Wavelength division multiplexing structure |
| CN112649919A (en) * | 2020-12-26 | 2021-04-13 | 易锐光电科技(安徽)有限公司 | Wavelength division multiplexing device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180116 Termination date: 20200112 |