CN208314252U - Low-loss wavelength division multiplexer - Google Patents
Low-loss wavelength division multiplexer Download PDFInfo
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- CN208314252U CN208314252U CN201821055162.5U CN201821055162U CN208314252U CN 208314252 U CN208314252 U CN 208314252U CN 201821055162 U CN201821055162 U CN 201821055162U CN 208314252 U CN208314252 U CN 208314252U
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Abstract
The utility model discloses a low-loss wavelength division multiplexer, including the wavelength division multiplexer casing, install the input sleeve at the through-hole one end of wavelength division multiplexer casing, install the output sleeve at the through-hole other end of wavelength division multiplexer casing install into the input sleeve and advance the light end collimater, install out-light end collimater in the output sleeve the right-hand member of advancing the light end collimater is connected with lens, installs the light filter on advancing the light end collimater, and lens and light filter all are located the inside of through-hole, install the filter on out-light end collimater, advances the light end collimater and has many optic fibres, and an optic fibre wherein carries out the input of optical signal as the common port, and other many optic fibres are received as the reflection end respectively the optical signal that the light filter reflected out; the light-emitting end collimator is provided with two optical fibers which are respectively used as transmission ends to receive optical signals transmitted by the optical filter. The utility model discloses the interference killing feature is strong, and light path loss is little.
Description
Technical field
The utility model relates to wavelength division multiplexer technical field more particularly to a kind of low-loss wavelength division multiplexers.
Background technique
With the development of network multimedia technology and the explosive growth of IP operation, people propose broadband communications technologies
Increasingly higher demands, it is desirable to obtain better 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 make full use of the enormous bandwidth resource of low-loss band of optical fibers, hold the transmission an of optical fiber
Amount increases several times or tens times than single band transmission, there is very big application value and economic value.Wavelength-division multiplex technique according to
The density of wavelength interval is divided into coarse wavelength division multiplexing and dense wave division multipurpose, and the channel spacing of Coarse Wave Division Multiplexer is about 20nm, close
Collect the channel spacing value of wavelength division multiplexer from 0.1nm to 1.6nm, since the transmission wavelength of optical fiber is limited, arranges optical channel
When, wavelength interval is shorter, and the optical channel that can be arranged is more, and wavelength division multiplexing equipment cost is also higher.With Fibre Optical Communication Technology
Development, the wavelength division multiplexer for developing multichannel obtain the concern of more and more network operators.
Multichannel wavelength division multiplexer currently on the market can be divided into Waveguide array type, light according to the difference of its manufacturing 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 are no commercialization, be applied in laboratory science research mostly.Grating type wavelength division multiplexer it is excellent
Point is high-resolution wavelength selection effect, most energy of specific wavelength can be separated with other wavelength, and side
To concentration.Grating multiplexer requires more accurate in manufacture, and structure is complicated, and the device count used is more, therefore cost
It is higher.The miniaturization for being mainly characterized by may be implemented 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 suitable for mass production to wait spies because compact-sized
Point has become and produces most wavelength division multiplexers in the market.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.
When carrying out the branch operation of optical signal, also tend to be by the effects of progress of simple fiber reflection, therefore light
The energy loss of signal is larger, therefore causes the energy attenuation of optical signal serious, and is also easy to produce light disturbance phenomenon, can not be effective
Cope with the requirement of the optical signal conducting under the conditions of Various Complex.
Utility model content
The utility model in order to overcome the shortcomings in the prior art, provides a kind of low-loss wavelength division multiplexer.
The utility model is achieved through the following technical solutions:
A kind of low-loss wavelength division multiplexer, including wavelength division multiplexer shell, along the axle center of the wavelength division multiplexer shell
Line direction is machined with through-hole, input casing is equipped in through-hole one end of the wavelength division multiplexer shell, in the wavelength-division multiplex
The through-hole other end of device shell is equipped with output casing, light inlet collimator is equipped in the input casing, described defeated
Light end collimator is installed out in casing out, is connected with lens in the right end of the light inlet collimator, it is quasi- in the light inlet
Optical filter is installed on straight device, and the lens and optical filter are respectively positioned on the inside of the through-hole, in the light end collimator out
On filter plate is installed, the light inlet collimator has multifiber, and an optical fiber therein is as common end progress light letter
Number input, multifiber in addition receives the optical signal that the optical filter reflects respectively as reflection end；The light end out
Collimator has two optical fiber, this two optical fiber receive the optical signal that the filter transmission goes out respectively as transmission end.
Further, anti-interference layer is provided on the through-hole wall face of the wavelength division multiplexer shell.
Further, the light inlet collimator and out the collimator centering of light end the inside of the through-hole is set, by public affairs
Channel collimator emits multichannel optical signal altogether, is transported in the light inlet collimator.
Further, the lens are any one in self-focusing lens, bitoric lens, C lens or non-spherical lens
Kind.
Compared with prior art, the beneficial effects of the utility model are: the structure design of the utility model is reasonable, spirit is used
Living convenient, strong antijamming capability, optical path loss is small, and input and the output number of optical path are on the one hand adjusted flexibly according to the usage requirement
Amount, on the other hand stability when effective raising optical signal communication branch, avoids external interference, reduces the energy damage of optical signal
Consumption.Double common ends and bireflectance end by using the light inlet collimator with multifiber as wavelength division multiplexer use
Double transmission end of the light end collimator as wavelength division multiplexer out can form common end entering light of the optical fiber from output, and will be in light
Specific wavelength optical signal is reflected into respectively in other multifiber, and the multi beam optical signal transmitted is transmitted to the light out of output end
It holds in collimator, to achieve the effect that increase communication channel, reduces the cost of optical signal transmission, reduce loss.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, a kind of low-loss wavelength division multiplexer, including wavelength division multiplexer shell 1, along the wavelength-division
The direction of axis line of multiplexer shell 1 is machined with through-hole 2, is equipped with input in 2 one end of through-hole of the wavelength division multiplexer shell 1
Casing 5 is equipped with output casing 6 in 2 other end of through-hole of the wavelength division multiplexer shell 1, installs in the input casing 5
There is light inlet collimator 3, light end collimator 4, the light inlet collimator 3 and out light are installed out in the output casing 6
The inside of the through-hole 2 is arranged in end 4 centering of collimator, emits multichannel optical signal by public passage collimator, is transported to institute
It states in light inlet collimator 3.
Referring to Fig. 1, the right end in the light inlet collimator 3 is connected with lens 7, in the light inlet collimator 3
Optical filter 8 is installed, and the lens 7 and optical filter 8 are respectively positioned on the inside of the through-hole 2, in the light end collimator 4 out
Filter plate 9 is installed, the light inlet collimator 3 has multifiber, and an optical fiber therein carries out light letter as common end
Number input, multifiber in addition receives the optical signal that the optical filter 8 reflects respectively as reflection end；The light end out
Collimator 4 has two optical fiber, this two optical fiber receive the optical signal that the optical filter 8 transmits respectively as transmission end.It is logical
The double common ends and bireflectance end that use the light inlet collimator with multifiber as wavelength division multiplexer are crossed, light end out is used
Double transmission end of the collimator as wavelength division multiplexer, can form common end entering light of the optical fiber from output, and by the certain wave in light
Long optical signal is reflected into respectively in other multifiber, and the light end that goes out that the multi beam optical signal transmitted is transmitted to output end collimates
In device, to achieve the effect that increase communication channel, reduces the cost of optical signal transmission, reduce loss.
Referring to Fig. 1, anti-interference layer 12 is provided on 2 inner wall of through-hole of the wavelength division multiplexer shell 1, by setting
It is equipped with anti-interference layer 12, can be improved its interference free performance.The lens 7 be self-focusing lens, bitoric lens, C lens or
Any one of non-spherical lens.
The structure design of the utility model is reasonable, flexible and convenient to use, and strong antijamming capability, optical path loss is small, on the one hand may be used
The input and the number of output of optical path are adjusted flexibly according to the needs of use, on the other hand when effective raising optical signal communication branch
Stability avoids external interference, reduces the energy loss of optical signal.The utility model can reduce signal light in multichannel wavelength-division
Energy loss in multiplexer, the technique for improving traditional multichannel wavelength division multiplexer can also save production cost.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model
Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical
In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (4)
1. a kind of low-loss wavelength division multiplexer, including wavelength division multiplexer shell (1), along the wavelength division multiplexer shell (1)
Direction of axis line is machined with through-hole (2), it is characterised in that: is equipped in through-hole (2) one end of the wavelength division multiplexer shell (1)
It inputs casing (5), output casing (6) is installed in through-hole (2) other end of the wavelength division multiplexer shell (1), described defeated
Enter and light inlet collimator (3) are installed in casing (5), light end collimator (4) is installed out in the output casing (6),
The right end of the light inlet collimator (3) is connected with lens (7), is equipped with optical filter on the light inlet collimator (3)
(8), and the lens (7) and optical filter (8) are respectively positioned on the inside of the through-hole (2), it is described go out light end collimator (4) on pacify
Equipped with filter plate (9), the light inlet collimator (3) has multifiber, and an optical fiber therein carries out light as common end
The input of signal, multifiber in addition receive the optical signal that the optical filter (8) reflects respectively as reflection end；It is described go out
Light end collimator (4) has two optical fiber, this two optical fiber receive the light that the optical filter (8) transmits respectively as transmission end
Signal.
2. a kind of low-loss wavelength division multiplexer according to claim 1, it is characterised in that: in the wavelength division multiplexer shell
(1) anti-interference layer (12) are provided on through-hole (2) inner wall.
3. a kind of low-loss wavelength division multiplexer according to claim 2, it is characterised in that: the light inlet collimator (3)
Light end collimator (4) centering setting is in the inside of the through-hole (2) out, by public passage collimator transmitting multichannel light letter
Number, it is transported in the light inlet collimator (3).
4. a kind of low-loss wavelength division multiplexer according to claim 1, it is characterised in that: the lens (7) are self-focusings
Any one of lens, bitoric lens, C lens or non-spherical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821055162.5U CN208314252U (en) | 2018-07-04 | 2018-07-04 | Low-loss wavelength division multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821055162.5U CN208314252U (en) | 2018-07-04 | 2018-07-04 | Low-loss wavelength division multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208314252U true CN208314252U (en) | 2019-01-01 |
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ID=64717823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821055162.5U Active CN208314252U (en) | 2018-07-04 | 2018-07-04 | Low-loss wavelength division multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208314252U (en) |
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2018
- 2018-07-04 CN CN201821055162.5U patent/CN208314252U/en active Active
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