CN107817558A - Optical wavelength division multiplexing device - Google Patents
Optical wavelength division multiplexing device Download PDFInfo
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- CN107817558A CN107817558A CN201610824639.0A CN201610824639A CN107817558A CN 107817558 A CN107817558 A CN 107817558A CN 201610824639 A CN201610824639 A CN 201610824639A CN 107817558 A CN107817558 A CN 107817558A
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- Prior art keywords
- filter plate
- division multiplexing
- plate group
- wavelength division
- multiplexing device
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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
- G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
- G02B6/29365—Serial cascade of filters or filtering operations, e.g. for a large number of channels in a multireflection configuration, i.e. beam following a zigzag path between filters or filtering operations
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
This application discloses a kind of optical wavelength division multiplexing device, the optical wavelength division multiplexing device includes beam delivery unit, collimation focusing unit, and filter plate group, the beam delivery unit includes being used for the incident beam transmission unit for transmitting incident beam and the outgoing beam transmission unit for transmitting outgoing beam, the collimation focusing unit is between beam delivery unit and filter plate group, for being collimated to the incident beam in incident beam transmission unit, and the light beam of filter plate group reflection is focused, the filter plate group includes multiple filter plates in different angle installation, the filter plate is reflected the light beam of specific wavelength or wave band, the light beam of other wavelength or wave band is transmitted, the collimated focusing unit of the reflected beams is transmitted into each outgoing beam transmission unit after focusing on.Filter plate is installed in different angle in the application optical wavelength division multiplexing device, and collimation focusing unit to incident beam can collimate and outgoing beam can be focused, and whole component compact, small volume, cost are low.
Description
Technical field
The invention belongs to technical field of photo communication, and in particular to a kind of optical wavelength division multiplexing device.
Background technology
Growing with communication field transmission capacity, traditional transmission technology has been difficult to meet transmission capacity and transmission
The requirement of speed, in data-center applications field and internet core node, educational institution, search engine, large-scale website, height
The fields such as performance calculating, to prevent that it is new to planning that deficiency, common carrier and service suppliers from occurring in the bandwidth resources of core network
Generation express network agreement is disposed.IEEE (Institute of Electrical and
Electronics Engineers, IEEE) to 40Gbps the and 100Gbps ether under P802.3ba engineering task forces
Net has formulated unified standard.
Light WDM technology（WDM, wavelength division multiplexer）It is by a series of carrying informations
Light carrier, be combined along simple optical fiber and transmitted with 1 to hundreds of nanometer of wavelength interval in optical frequency domain；Used again in receiving terminal
Certain method, by the separated communication mode of the light carrier of each different wave length.Waveguide array wavelength division multiplex device price at present
It is higher, the optical wavelength division multiplexing device of generally use free space.
Ginseng Fig. 1 show the optical wavelength division multiplexing device of free space in the prior art, and it includes incident optical 10 ', standard
Straight lens 20 ', some filter plates 30 ' and speculum 40 ', some condenser lenses 50 ' and the output optical fiber 60 ', each filter plate
30 ' is arranged in parallel, and speculum 40 ' is corresponded with filter plate 30 ' and set, on the reflected light path of each speculum 40 '
It is respectively equipped with a condenser lens 50 ' and a output optical fiber 60 '.
Wavelength is λ1~λnSome beam incident beams be transmitted from incident optical 10 ', by collimation lens after scattering
20 ' collimations are collimated light beam, and collimated light beam passes through some filter plates 30 ', each the reflection specific wavelength of filter plate 30 ' or wave band
Light beam, such as first reflection wavelength of filter plate 30 ' is λ1Light beam, other light beams are transmitted, and second filter plate 30 ' reflects
Wavelength is λ2Light beam, other light beams are transmitted ..., the like, the light beam after the reflection of each filter plate 30 ' passes through successively
Cross corresponding speculum 40 ' to reflect, and condenser lens 50 ' corresponding to process is focused in each the output optical fiber 60 ', each outgoing
Optical fiber 60 ' is respectively used to transmit the outgoing beam of each wavelength or wave band, and such as first outgoing grating 60 ' is for transmission wavelength
λ1Light beam, second outgoing grating 60 ' for transmission wavelength is λ2Light beam ..., the like.
As can be seen here, the optical wavelength division multiplexing device of free space is bulky in the prior art, and its majority, which uses, first will
Beam collimation, the light beam of different wave length is then separated with filter plate, be focused again in each beam outlet.Its light path is more multiple
Miscellaneous, more using lens, the big cost of volume is high.
The content of the invention
The embodiment of the application one provides a kind of optical wavelength division multiplexing device, and the optical wavelength division multiplexing device includes filter plate
Group, the filter plate group include multiple filter plates in different angle arrangement, and each filter plate is right respectively in the filter plate group
The light beam of specific wavelength or wave band is reflected, and the light beam of other wavelength or wave band is transmitted；When a branch of parallel compound
Described in light beam directive during filter plate group, each filter plate reflects the light beam of respective wavelength or wave band respectively, by each filter plate
The light beam of reflection reflects in different angle from the filter plate group respectively.
In one embodiment, the optical wavelength division multiplexing device also includes the collimation focusing unit converged to directional light,
The light beam of filter plate group described in directive is changed into collimated light beam and enters the filter plate group by the collimation focusing unit, from the filter
The collimated light beam of wave plate group outgoing is emitted after the collimation focusing unit is converged from the collimation focusing unit.
In one embodiment, the optical wavelength division multiplexing device also includes beam delivery unit, and the beam delivery unit will
Incident beam is directed into the filter plate group and/or by the emergent light of the filter plate group by collimation by collimation focusing unit
Exported after focusing unit.
Another embodiment of the application provides a kind of optical wavelength division multiplexing device, and the optical wavelength division multiplexing device includes light beam
Transmission unit, collimation focusing unit and filter plate group, the beam delivery unit include being used for the incidence for transmitting incident beam
Beam delivery unit and the outgoing beam transmission unit for transmitting outgoing beam, the collimation focusing unit are located at beam Propagation
Between unit and filter plate group, for being collimated to the incident beam in incident beam transmission unit and to filter plate group
The light beam of reflection is focused, and the filter plate group includes multiple filter plates in different angle installation, and the filter plate is to spy
Standing wave is long or the light beam of wave band is reflected, and the light beam of other wavelength or wave band is transmitted, the collimated focusing of the reflected beams
Unit is transmitted into each outgoing beam transmission unit after focusing on.
In one embodiment, the beam delivery unit is some optical fiber and/or device, if incident beam transmission unit includes
Dry incident optical and/or light emitting devices, outgoing beam transmission unit include some the output optical fibers and/or light receiving element.
In one embodiment, multiple filter plates in the filter plate group are fixed together according to certain angle.
In one embodiment, multiple filter plates in the filter plate group are bonded according to the angle of wedge of different angle to be fixed.
In one embodiment, the collimation focusing unit includes a lens or multiple lens.
In one embodiment, the collimation focusing unit includes one or more concave mirrors.
In one embodiment, the optical wavelength division multiplexing device also includes pedestal and the optical fiber fixture on pedestal, institute
State incident optical and/or the output optical fiber that optical fiber fixture is used to be fixedly mounted in beam delivery unit.
Compared with prior art, in the technical scheme of the application：
Filter plate is installed in different angle in optical wavelength division multiplexing device, and collimation focusing unit can both collimate to incident beam
Outgoing beam can be focused again, whole component compact, small volume, cost are low；
Filter plate is assembled using cold working mode, has higher angle precision, assembling is simply；
Whole device need to only couple once to beam delivery unit with collimation focusing unit and filter plate group, enormously simplify assembling
Technique.
Brief description of the drawings
Fig. 1 is the structural representation of optical wavelength division multiplexing device in the prior art；
Fig. 2 is the structural representation of optical wavelength division multiplexing device in the application first embodiment；
Fig. 3 is the schematic perspective view of optical wavelength division multiplexing device in the application second embodiment；
Fig. 4 is the schematic top plan view of optical wavelength division multiplexing device in the application second embodiment；
Fig. 5 is the schematic side view of optical wavelength division multiplexing device in the application second embodiment；
Fig. 6 is the scheme of installation of fiber array and optical fiber fixture in the application second embodiment；
Fig. 7 is the structural representation of optical wavelength division multiplexing device in the embodiment of the application the 3rd.
Embodiment
The application is described in detail below with reference to embodiment shown in the drawings.But these embodiments are simultaneously
The application is not limited, structure that one of ordinary skill in the art is made according to these embodiments, method or functionally
Conversion is all contained in the protection domain of the application.
In each diagram of the application, for the ease of diagram, structure or partial some sizes can be relative to other knots
Structure or partial enlargement, therefore, it is only used for illustrating the basic structure of the theme of the application.
It is used herein for example " on ", " top ", " under ", the term of the representation space relative position such as " lower section " is in order at just
A unit as shown in the drawings or feature are described relative to another unit or the relation of feature in the purpose of explanation.It is empty
Between the term of relative position can be intended to include different azimuth of the equipment in use or work in addition to orientation shown in figure.
If for example, by figure equipment overturn, be described as being located at other units or feature " lower section " or " under " unit will
Positioned at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both orientation.If
It is standby to be otherwise directed（It is rotated by 90 ° or other directions）, and correspondingly explain used herein and space correlation
Language is described.
When element or layer be referred to as another part or layer " on ", with another part or layer " connection " when, it can be direct
On another part or layer, another part or layer is connected to, or there may be intermediary element or layer.On the contrary, work as part
When being referred to as " directly on another part or layer ", " being connected directly between on another part or layer ", it is impossible to exist intermediate member or
Layer.
A kind of optical wavelength division multiplexing device in the application, including filter plate group, it is in different angles that filter plate group, which includes multiple,
The filter plate of arrangement is spent, each filter plate is reflected the light beam of specific wavelength or wave band respectively in filter plate group, to other
The light beam of wavelength or wave band is transmitted；When a branch of parallel composite light beam directive filter plate group, each filter plate difference is anti-
The light beam of respective wavelength or wave band is penetrated, the light beam reflected by each filter plate reflects in different angle from filter plate group respectively
Return.
Preferably, optical wavelength division multiplexing device also includes the collimation focusing unit converged to directional light, collimation focusing
The light beam of directive filter plate group is changed into collimated light beam and enters filter plate group by unit, and the collimated light beam being emitted from filter plate group is through standard
Straight focusing unit is emitted after being converged from collimation focusing unit.
Preferably, optical wavelength division multiplexing device also includes beam delivery unit, and beam delivery unit passes through incident beam
Collimation focusing unit is directed into filter plate group and/or exports the emergent light of filter plate group after collimation focusing unit.
Join shown in Fig. 2, introduce the first embodiment of the application optical wavelength division multiplexing device 100, it includes beam Propagation
Unit, collimation focusing unit and filter plate group, below to the beam delivery unit in present embodiment, collimation focusing unit,
And filter plate group is described further.
Beam delivery unit in present embodiment is fiber array, including for transmitting the incident optical 11 of incident beam
And for transmitting multiple the output optical fibers of outgoing beam.In present embodiment by taking 4 the output optical fibers 121,122,123,124 as an example
Illustrate, incident optical 11 is in array distribution, the output optical fiber 121,122 and outgoing with the output optical fiber 121,122,123,124
Optical fiber 123,124 is located at the both sides of incident optical 11.
It should be appreciated that in the present embodiment, incident optical distribution parallel with the output optical fiber, incident optical be located at into
Optical fiber middle position is penetrated, incident optical and the output optical fiber can also be non-parallel distribution in other embodiments, incident light
Fibre is not limited to be located at incident optical middle position, can also be between any two the output optical fiber, or positioned at the output optical fiber
Outside.Angle by changing each filter plate and incident beam can control the shooting angle of outgoing beam.Each filtering
The angle mutually formed between piece, which can facilitate, distinguishes the light beam of different wave length, and the size of its angle can be as needed
Set.No longer citing illustrates herein.
In addition, beam delivery unit is in addition to the incident optical and the output optical fiber that are referred in present embodiment, incident light
Fibre can also use light emitting devices（Such as laser）Substitute, the output optical fiber can also use optical receiver（Such as photodetection
Device etc.）Substitute.Simultaneously as the invertibity of light path, incident optical and the output optical fiber can also be replaced mutually, herein no longer one by one
Citing illustrates.
Collimation focusing 20 is between fiber array and filter plate group, only with a convex lens in present embodiment, both
Transmitted and collimated available for the incident beam in incident optical 11, the light beam that can be reflected again filter plate group transmits
And focus on.
Filter plate group includes multiple filter plates in different angle installation, accordingly, with 4 filter plates in present embodiment
31st, illustrate exemplified by 32,33,34, filter plate 31,32,33,34 is respectively provided with certain angle between any two.Each filter plate
The light beam of specific wavelength or wave band is reflected, the light beam of other wavelength or wave band transmitted, the reflected beams are collimated
Focusing unit is transmitted into each the output optical fiber 121,122,123,124 after focusing on.
Specifically, filter plate 31,32,33,34 is directly fixed together according to certain angle in present embodiment.Herein may be used
, can also be by filter plate 31,32,33,34 so that filter plate 31,32,33,34 to be directly adhesively fixed according to the angle of setting
Angle according to setting is bonded on substrate and is fixed.
In other embodiments, can respectively by way of cold working by filter plate 31,32,33,34 formed with not
With the angle of wedge of angle, filter plate 31,32,33,34 is fixedly mounted by the angle of wedge, so that each filter plate is in different angle.It is cold
Processing is a kind of processing mode in optical element, and it prepares the filter plate of different angle, grinding by the step such as cutting, grinding
Flatness can reach nanoscale, cutting accuracy reaches micron order, and angle reaches second level.Because cold working has higher angle
Precision is spent, therefore relatively low is required to assembling, assembling is simple.
The partial wave principle of optical wavelength division multiplexing device is specially in present embodiment：
Incident beam is composite light beam, and it is λ including at least wavelength1、λ2、λ3、λ4Light beam, incident beam passes through incident optical
11 are transmitted, and the light beam spread out of from incident optical 11 is transmitted to filter plate group after collimation focusing unit 20 is collimated.
It is λ that filter plate 31,32,33,34, which is respectively used to reflection wavelength,1、λ2、λ3、λ4Light beam, each filter plate is to other
The light beam of wavelength is transmitted.In this way, filter plate 31 is by a length of λ of incident beam medium wave1Light beam reflected, pass through filter plate
31 angles set, the light beam after reflection are focused after collimation focusing unit 20, focus to the port of the output optical fiber 121
Place, and then be λ by the transmission wavelength of the output optical fiber 1211Light beam.Similarly, filter plate 32,33,34 is respectively by incident beam
The a length of λ of medium wave2、λ3、λ4Light beam reflected, the angle set by filter plate 32,33,34, light beam after reflection is by accurate
Be focused, focused at the port of the output optical fiber 122,123,124 after straight focusing unit 20, so by the output optical fiber 122,
123rd, 124 transmission wavelengths are λ2、λ3、λ4Light beam.
It should be appreciated that optical wavelength division multiplexing device illustrates by taking four-way as an example in present embodiment, it includes
One incident optical, four the output optical fibers, a convex lens and four filter plates, can also set it in other embodiments
The passage of his quantity, as in eight channel optical wavelength division multiplex devices, then including an incident optical, eight the output optical fibers, one
Convex lens and eight filter plates, no longer citing illustrates in detail herein.
Further, the collimation focusing unit 20 in present embodiment is a convex lens, both can be used for light beam
Collimation, can be used for the focusing to light beam, certainly, collimation focusing unit 20 can also include multiple in other embodiments again
Lens, such as a collimation lens and two condenser lenses, collimation lens are correspondingly arranged with incident optical 11, two condenser lenses point
It is not correspondingly arranged with the output optical fiber 121,122 and the output optical fiber 123,124, or can also is that a collimation lens and four are poly-
Focus lens, collimation lens are correspondingly arranged with incident optical 11, two condenser lenses respectively with the output optical fiber 121,122,123,124
It is correspondingly arranged, no longer citing illustrates one by one herein.
Join shown in Fig. 3 ~ Fig. 5, introduce the second embodiment of the application optical wavelength division multiplexing device 100, it includes pedestal
40 and the optical fiber fixture 50 on pedestal, collimation focusing unit 20 and filter plate group, it is installed with optical fiber fixture
Beam delivery unit 10, below to the pedestal in present embodiment, optical fiber fixture, beam delivery unit, collimation focusing unit,
And filter plate group is described further.
Beam delivery unit 10 includes being used to transmit the incident optical of incident beam and for transmitting the multiple of outgoing beam
The output optical fiber, it is identical with above-mentioned embodiment.
Pedestal 40 in present embodiment is set in lengthwise open, and it includes the first mounting surface 41 being parallel to each other and the second peace
Dress face 42, optical fiber fixture 50 are fixedly installed on the first mounting surface 41, and collimation focusing unit 20 and filter plate group are fixedly mounted
In on the second mounting surface 42, and the level height of the first mounting surface 41 is more than the level height of the second mounting surface 42.
In optical module, the optical fiber fixture 50 for installing beam delivery unit 10 is highly usually less than collimation focusing unit 20
And the height of filter plate group, by two mounting surfaces for setting height not wait, each member in optical wavelength division multiplexing device can be simplified
The assembling of device, ensure the stability of light path.
With reference to shown in Fig. 6, the optical fiber fixture 50 in present embodiment includes the first optical fiber fixture 51 and the second optical fiber
Fixture 52.Second optical fiber fixture 52 is fixedly installed on the first mounting surface 41 of pedestal, and the first optical fiber fixture 51 is located at
The top of second optical fiber fixture 52.The size of first optical fiber fixture 51 is less than the size of the second optical fiber fixture 52, in this way,
When the optical fiber in beam delivery unit 10 is installed between the first optical fiber fixture 51 and the second optical fiber fixture 52, part light
Fibre can be exposed to outside the first optical fiber fixture 51, and is carried on the second optical fiber fixture 52.
In addition, being provided with the V-shaped groove 521 of array arrangement on the surface of the second optical fiber fixture 52, V-shaped groove 521 is consolidated in optical fiber
Determine in same level height in part 50, and equidistantly be arranged in parallel between each V-shaped groove 521.Light in beam delivery unit 10
Fibre is fixedly installed in each V-shaped groove 521 respectively, and the fixed precision of optical fiber can be improved by fixing optical fiber using V-shaped groove 521.
Certainly, some mounting holes can also be set in optical fiber fixture in other embodiments（Such as circular mounting
Hole）, the optical fiber penetrating mounting holes in beam delivery unit 10 are fixedly mounted, are no longer described in detail herein.
Collimation focusing unit 20 is fixedly installed on the second mounting surface 42 of pedestal 40, and positioned at optical fiber fixture 50 and filter
Between wave plate group, only with a convex lens in present embodiment, it can be not only used for carrying out standard to the incident beam in incident optical
Directly, the light beam that can be reflected again filter plate group is focused.
Filter plate group includes multiple filter plates in different angle installation, and each filter plate is installed vertically on pedestal 40
On second mounting surface 42.Accordingly, illustrated in present embodiment by taking 4 filter plates 31,32,33,34 as an example, filter plate
31st, 32,33,34 certain angle is respectively provided between any two.Each filter plate is reflected the light beam of specific wavelength or wave band,
The light beam of other wavelength or wave band is transmitted, the collimated focusing unit of the reflected beams is transmitted to each the output optical fiber after focusing on
In.
Specifically, in present embodiment filter plate 31,32,33,34 respectively by way of cold working formed with different angles
The angle of wedge of degree, filter plate 31,32,33,34 are fixedly mounted by the angle of wedge, so that each filter plate is in different angle.Cold working
A kind of processing mode in optical element, it prepares the filter plate of different angle by the step such as cutting, grinding, grinding it is flat
Whole degree can reach nanoscale, and cutting accuracy reaches micron order, and angle reaches second level.Because cold working has higher angle essence
Degree, therefore relatively low is required to assembling, assembling is simple.
Certainly, multiple filter plates in other embodiments in filter plate group can also be fixed directly according to certain angle
Together, the purpose of the application can equally be realized.
The partial wave principle of optical wavelength division multiplexing device is specially in present embodiment：
Incident beam is composite light beam, and it is λ including at least wavelength1、λ2、λ3、λ4Light beam, incident beam passes through beam Propagation
Incident optical in unit is transmitted, and is transmitted from the light beam of incident optical outflow after collimation focusing unit 20 is collimated
To filter plate group.
It is λ that filter plate 31,32,33,34, which is respectively used to reflection wavelength,1、λ2、λ3、λ4Light beam, each filter plate is to other
The light beam of wavelength is transmitted.In this way, filter plate 31 is by a length of λ of incident beam medium wave1Light beam reflected, pass through filter plate
31 angles set, the light beam after reflection are focused after collimation focusing unit 20, focus to the end of a output optical fiber
At mouthful, and then it is λ by the output optical fiber transmission wavelength1Light beam.Similarly, filter plate 32,33,34 is respectively by incident beam
The a length of λ of medium wave2、λ3、λ4Light beam reflected, the angle set by filter plate 32,33,34, light beam after reflection is by accurate
It is focused, focuses at the port of each the output optical fiber, and then be by each the output optical fiber transmission wavelength after straight focusing unit 20
λ2、λ3、λ4Light beam.
The Making programme of present embodiment optical wavelength division multiplexing device 100 is specially：
The filter plate with different angle is stacked into fixed installation by the angle of wedge first, forms filter plate group；
Then filter plate group and collimation focusing unit are installed on the second mounting surface of pedestal, make pedestal, filter plate group and standard
Straight focusing unit is assembled integrally；
Finally fiber array is installed in the V-shaped groove of optical fiber fixture, and the optical fiber fixture coupling that fiber array will be provided with
Conjunction is installed on the first mounting surface of pedestal, fiber array and the light path of filter plate group and collimation focusing unit is coupled.
In other embodiments, the optical fiber fixture for being provided with fiber array coupling first can also be installed on pedestal
On first mounting surface, then filter plate group is installed on the second mounting surface of pedestal with collimation focusing unit and coupled, herein
No longer it is described in detail.
Join shown in Fig. 7, introduce the 3rd embodiment of the application optical wavelength division multiplexing device 100, it includes beam Propagation
Unit, collimation focusing unit and filter plate group,
It is that beam delivery unit is fiber array with first embodiment identical, including for transmitting the incidence of incident beam
Optical fiber 11 and multiple the output optical fibers 121,122,123,124 for transmitting outgoing beam；Filter plate group includes multiple in difference
The filter plate 31,32,33,34 of angle installation, filter plate 31,32,33,34 are respectively provided with certain angle between any two.Light beam passes
Defeated unit and filter plate group is identical with first embodiment, is no longer repeated herein.
Unlike first embodiment, the collimation focusing unit in present embodiment is a concave mirror
21, concave mirror 21 can be not only used for that the incident beam in incident optical is reflected and collimated, again can be anti-to filter plate group
The light beam penetrated is reflected and focused on.
The partial wave principle of optical wavelength division multiplexing device is specially in present embodiment：
Incident beam is composite light beam, and it is λ including at least wavelength1、λ2、λ3、λ4Light beam, incident beam passes through incident optical
11 are transmitted, and the light beam spread out of from incident optical 11 is transmitted to filter plate after concave mirror 21 is reflected and is collimated
Group.
It is λ that filter plate 31,32,33,34, which is respectively used to reflection wavelength,1、λ2、λ3、λ4Light beam, each filter plate is to other
The light beam of wavelength is transmitted.In this way, filter plate 31 is by a length of λ of incident beam medium wave1Light beam reflected, pass through filter plate
31 angles set, the light beam after reflection are reflected and focused on after concave mirror 21, focus to the output optical fiber 121
At port, and then it is λ by the transmission wavelength of the output optical fiber 1211Light beam.Similarly, filter plate 32,33,34 is respectively by incidence
The a length of λ of light beam medium wave2、λ3、λ4Light beam reflected, by filter plate 32,33,34 set angle, after reflection light beam warp
It is focused, focuses at the port of the output optical fiber 122,123,124, and then pass through the output optical fiber after crossing concave mirror 21
122nd, 123,124 transmission wavelengths are λ2、λ3、λ4Light beam.
It should be appreciated that collimated and to anti-by a concave mirror incident beam in present embodiment
Irradiating light beam is focused, and in other embodiments, can also set multiple speculums, such as multiple concave mirrors or some
The combination of concave mirror and some plane mirrors, as long as the collimation of incident beam and the focusing of the reflected beams can be realized
Collimation focusing unit belongs to the scope that the application is protected.The application is had the advantages that by above-described embodiment：
Filter plate is installed in different angle in optical wavelength division multiplexing device, and collimation focusing unit can both collimate to incident beam
Outgoing beam can be focused again, whole component compact, small volume, cost are low；
Filter plate is assembled using cold working mode, has higher angle precision, assembling is simply；
Whole device need to only couple once to beam delivery unit with collimation focusing unit and filter plate group, enormously simplify assembling
Technique.
It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity
For bright book as an entirety, the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
Those listed above it is a series of describe in detail only for the application feasibility embodiment specifically
Bright, they are simultaneously not used to limit the protection domain of the application, all equivalent implementations made without departing from the application skill spirit
Or change should be included within the protection domain of the application.
Claims (10)
1. a kind of optical wavelength division multiplexing device, it is characterised in that the optical wavelength division multiplexing device includes filter plate group, the filter
Wave plate group includes multiple filter plates in different angle arrangement, in the filter plate group each filter plate respectively to specific wavelength or
The light beam of wave band is reflected, and the light beam of other wavelength or wave band is transmitted；When a branch of parallel composite light beam directive institute
When stating filter plate group, each filter plate reflects the light beam of respective wavelength or wave band respectively, the light beam reflected by each filter plate
Reflected respectively in different angle from the filter plate group.
2. optical wavelength division multiplexing device according to claim 1, it is characterised in that the optical wavelength division multiplexing device also wraps
The collimation focusing unit converged to directional light is included, the light beam of filter plate group described in directive is changed into by the collimation focusing unit
Collimated light beam enters the filter plate group, is converged from the collimated light beam of filter plate group outgoing through the collimation focusing unit
It is emitted after poly- from the collimation focusing unit.
3. optical wavelength division multiplexing device according to claim 2, it is characterised in that the optical wavelength division multiplexing device also wraps
Beam delivery unit is included, incident beam is directed into the filter plate group by the beam delivery unit by collimation focusing unit
And/or the emergent light of the filter plate group is exported after collimation focusing unit.
4. a kind of optical wavelength division multiplexing device, it is characterised in that the optical wavelength division multiplexing device includes beam delivery unit, standard
Straight focusing unit and filter plate group, the incident beam transmission that the beam delivery unit includes being used to transmit incident beam are single
Member and the outgoing beam transmission unit for transmitting outgoing beam, the collimation focusing unit are located at beam delivery unit and filtering
Between piece group, the light beam for being collimated to the incident beam in incident beam transmission unit and to the reflection of filter plate group
It is focused, the filter plate group includes multiple filter plates in different angle installation, and the filter plate is to specific wavelength or ripple
The light beam of section is reflected, and the light beam of other wavelength or wave band is transmitted, after the collimated focusing unit of the reflected beams focuses on
Transmit into each outgoing beam transmission unit.
5. optical wavelength division multiplexing device according to claim 4, it is characterised in that the beam delivery unit is some light
Fine and/or device, incident beam transmission unit include some incident opticals and/or light emitting devices, outgoing beam transmission unit
Including some the output optical fibers and/or light receiving element.
6. optical wavelength division multiplexing device according to claim 4, it is characterised in that multiple filtering in the filter plate group
Piece is fixed together according to certain angle.
7. optical wavelength division multiplexing device according to claim 4, it is characterised in that multiple filtering in the filter plate group
Piece is bonded according to the angle of wedge of different angle and fixed.
8. optical wavelength division multiplexing device according to claim 4, it is characterised in that the collimation focusing unit includes one
Lens or multiple lens.
9. optical wavelength division multiplexing device according to claim 4, it is characterised in that the collimation focusing unit includes one
Or multiple concave mirrors.
10. optical wavelength division multiplexing device according to claim 5, it is characterised in that the optical wavelength division multiplexing device is also
Optical fiber fixture including pedestal and on pedestal, the optical fiber fixture are used to entering in beam delivery unit be fixedly mounted
Penetrate optical fiber and/or the output optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824639.0A CN107817558A (en) | 2016-09-14 | 2016-09-14 | Optical wavelength division multiplexing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824639.0A CN107817558A (en) | 2016-09-14 | 2016-09-14 | Optical wavelength division multiplexing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107817558A true CN107817558A (en) | 2018-03-20 |
Family
ID=61601316
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610824639.0A Withdrawn CN107817558A (en) | 2016-09-14 | 2016-09-14 | Optical wavelength division multiplexing device |
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| Country | Link |
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| CN (1) | CN107817558A (en) |
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| CN110572212A (en) * | 2019-09-25 | 2019-12-13 | 深圳市科信通信技术股份有限公司 | Bundling packaged wavelength division multiplexer |
| CN114384642A (en) * | 2020-10-19 | 2022-04-22 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN117706691A (en) * | 2024-02-01 | 2024-03-15 | 无限光通讯(深圳)有限公司 | Compact type passive wavelength division multiplexer |
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