CN209148906U - Reflective wavelength division multiplexer - Google Patents
Reflective wavelength division multiplexer Download PDFInfo
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- CN209148906U CN209148906U CN201822266443.1U CN201822266443U CN209148906U CN 209148906 U CN209148906 U CN 209148906U CN 201822266443 U CN201822266443 U CN 201822266443U CN 209148906 U CN209148906 U CN 209148906U
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- optical fiber
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- wavelength
- division multiplexer
- wavelength division
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Abstract
The utility model relates to a kind of reflective wavelength division multiplexer, belong to realization signal uplink, downlink in optical communication network, wavelength-division multiplex, the component for demultiplexing function.The Thin Film Filter end of three optical fiber collimators is fixedly connected with reflective bar, three optical fiber collimators and reflective bar and outer glass sleeve both ends inner wall fixed bonding.The utility model uses reflective structure, makes the input/output port of signal in the same side of device, keeps system arrangement more flexible；And the length of the reflective wavelength division multiplexer of the utility model is about the half of conventional wavelength division multiplexer, the volume of communication equipment can substantially be reduced, make the uplink and downlink module volume-diminished half in system, increase optical filtering isolation simultaneously, and system cost can be reduced, the utility model will be laid with for the large area of Networks of Fiber Communications and solve cost and two hang-up of space, have volume compact, the characteristics such as high-isolation can be supplied to various wavelength-division multiplex systems and use.
Description
Technical field
The utility model relates to signal uplink, downlink, wavelength-division multiplex, the first device for demultiplexing function are realized in optical communication network
Part
Background technique
Current optical fiber Communication Development is swift and violent, the formal starting of 5G communication, different from previous communication, 5G communicate be not completely according to
It by transmission base station large-scale one by one, but needs to carry out signal transmission by intensive small base station, to need high-volume
Intensive laying Networks of Fiber Communications, and highdensity laying optical fiber telecommunications system will be solved there are two problem.First is that cost is asked
Topic, paving build Networks of Fiber Communications firstly the need of passive devices such as large batch of wavelength division multiplexers, while be also required to largely receive,
The active devices such as hair, amplification, and the price of these devices is relatively high high；First is that space problem, since it is desired that a large amount of intensive
It is laid with optical-fiber network, it is therefore desirable to reduction newly added equipment volume as far as possible.
It is needed at present in optical fiber telecommunications system to increase the means that the working transmission of unit optical fiber mainly uses wavelength-division multiplex
Wavelength division multiplexer is used to carry out the merging and decomposition of signal.Signal can gradually decay in transmission process, the power meeting of signal
Gradually it is close with system noise, so that signal be made to will cause distortion when system end is demodulated.Lead to solve this problem
Normal method is once to be amplified in signals transmission every a distance, increases filter when another method is demultiplexing
Wave number will increase dramatically system cost to increase the filtering function to system noise in this way.
Summary of the invention
The utility model provides a kind of reflective wavelength division multiplexer, with solve presently, there are communication equipment volume it is big, at
This high problem.
The technical scheme adopted by the utility model is that: the Thin Film Filter end of three optical fiber collimators and the fixed company of reflective bar
It connects, three optical fiber collimators and reflective bar and outer glass sleeve both ends inner wall fixed bonding.
The structure of three optical fiber collimator is: three optical fiber are respectively placed in three pores of three optical fiber glass capillaries
Interior, blend compounds water is adhesively fixed, the beveled end of three optical fiber glass capillaries bonding opposite with the beveled end of self-focusing lens, autohemagglutination
The planar ends of focus lens are Nian Jie with Thin Film Filter, and the one side which is coated with wavelength-division multiplex film layer is saturating backwards to self-focusing
Mirror；
The capillary hole site of three optical fiber capillaries uses the position distribution mode of right angled isosceles triangle；
Common end of the optical fiber of a sharply angled position as transmission all wavelengths signal, another in three optical fiber collimator
The optical fiber of a sharply angled position is used as the signal transmission end for meeting a certain specific wavelength, the optical fiber of square position except above specific
The transmission end of other wavelength signals except signal wavelength.
The reflective bar is a cylindrical glass, and one of end face is coated with the film that is all-trans.
Signal can pass twice through Thin Film Filter to the utility model product at work, be completed using a device to being
The filtering twice of system noise.So as to reduce the amplification number of signal in signals transmission, or reduction half to filter
Demand, therefore system cost can be greatly reduced.In addition, the reflective wavelength division multiplexer of the utility model uses reflective knot
Structure makes the input/output port of signal in the same side of device, keeps system arrangement more flexible；And the utility model is reflective
The length of wavelength division multiplexer is about the half of conventional wavelength division multiplexer, can substantially reduce the volume of communication equipment, make in system
Uplink and downlink module volume-diminished half, while increasing optical filtering isolation, and system cost can be reduced, the utility model will be
The large area of Networks of Fiber Communications, which is laid with, solves cost and two hang-up of space, has volume compact, the characteristics such as high-isolation can
It is used with being supplied to various wavelength-division multiplex systems.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of three optical fiber collimator of the utility model；
Fig. 3 is three optical fiber of the utility model and three optical fiber glass capillary assembling schematic diagrams；
Fig. 4 is the left view of three optical fiber glass capillary of the utility model；
Fig. 5 is the structural schematic diagram of the utility model reflective bar；
Fig. 6 is the right view of Fig. 5.
Specific embodiment
The Thin Film Filter end of three optical fiber collimators 2 is fixedly connected with reflective bar 3, three optical fiber collimators 2 and reflective bar 3 with
Outer 1 both ends inner wall fixed bonding of glass sleeve.
The structure of three optical fiber collimator 2 is: three optical fiber 201 are respectively placed in the three of three optical fiber glass capillaries 202
In a pore, blend compounds water is adhesively fixed, the beveled end of three optical fiber glass capillaries 202 and the inclined-plane of self-focusing lens 203
The opposite bonding in end, the planar ends of self-focusing lens 203 are Nian Jie with Thin Film Filter 204, and it is multiple which is coated with wavelength-division
With the one side of film layer backwards to self-focusing lens 203；
The capillary hole site of three optical fiber capillaries 202 uses the position distribution mode of right angled isosceles triangle；
The optical fiber 201a of a sharply angled position is as the public of transmission all wavelengths signal in three optical fiber collimator 2
End, the optical fiber 201b of another sharply angled position is as the signal transmission end for meeting a certain specific wavelength, the optical fiber of square position
Transmission end of the 201c as other wavelength signals in addition to the above signal specific wavelength；
The reflective bar 3 is a cylindrical glass, and one of end face is coated with the film that is all-trans.
The working principle of the utility model is described with reference to the drawings below.
Three optical fiber are arranged in three optical fiber collimators 2 (Fig. 2,3,4) with isosceles right triangle, wherein a sharply angled position
Optical fiber 201a input common end as signal, by making to meet the signal of a certain specific wavelength after collimator from Thin Film Filter
204 front ends are exported in the form of collimated light, light of other remaining wavelength signals from the other sharply angled position of three optical fiber collimators
Fine 201b output；The optical signal issued from 204 front end of Thin Film Filter, which is beaten, is coated with the end face for the film that is all-trans in reflective bar (Fig. 5,6)
On, the road Shi Ci optical signal is exported from the optical fiber 201c of the square position of three optical fiber collimators；Outer glass bushing 1 is placed on three optical fiber standard
3 outside of straight device 2 and reflective bar, in outer 1 both ends inner wall coated with glue of glass sleeve, makes glass of its both ends respectively with three optical fiber collimators
The cylindrical surface of sleeve 205 and reflective bar is adhesively fixed, while playing the relative position for fixing three optical fiber collimators and reflective bar
The optical signaling paths of the seal protection wavelength division multiplex device avoid the pollutant effects optical signal transmission such as dust, steam；
The Thin Film Filter 204 of three optical fiber collimators is closely bonded by glue and 203 plane of self-focusing lens, film filter
Mating plate 204 is coated with the one side of wavelength-division multiplex film layer backwards to self-focusing lens 203, when there is optical signal to pass through 204 wave of Thin Film Filter
When dividing multiplexing film surface, the optical signal of satisfactory specific wavelength is almost lossless to pass through the film layer, other wavelength channels are whole
Forming reflection can not be by film layer, later by the inclined-plane of the self-focusing lens 203 of bonding Thin Film Filter 204 and three optical fiber hairs
The inclined-plane of thin glass tube 202 is opposite, adjusts the two relative position, it is made to meet the sharply angled position for working as three optical fiber pigtails (Fig. 3)
When optical fiber 201a has optical signal input, after signal reaches optical filter 204 by self-focusing lens 203, which is worn
Optical filter collimation output is crossed, other wavelength channels are reflected and returned, export from the optical fiber 201b of an other sharply angled position, later
It is bonded self-focusing lens 203 and three optical fiber glass capillaries, 202 incline position using glue, fixes the two relative position, i.e.,
Three optical fiber collimator 2 needs optical signal in the optical fiber for enabling two sharply angled positions to reflect mutually, while meeting across film
The optical signal of optical filter 204 can collimate output.
Reflective bar 3 is a cylindrical glass, and one of end face is coated with the film that is all-trans, and effect is reflected from three fiber optic collimators
The collimated light signal that the 204 wavelength-division multiplex film layer of Thin Film Filter of device 2 transmits, makes it be reflected into the straight of three optical fiber collimators
In Angle Position optical fiber 201c.
As shown in Figure 3,4, three optical fiber 201 are respectively placed in three pores of three optical fiber glass capillaries 202, are used in combination
Glue is adhesively fixed, and forms three optical fiber pigtails, and effect has two o'clock: one is fixed optical fiber, is convenient for subsequent operation, due to optical fiber
It is thin and crisp, it is extremely easily damaged and is not fixed easily if directly operated to it, it can be more after being fixed using glass capillary 202 to it
Add it is convenient it is ground, plated film, the subsequent operations such as adjusting；Second effect is the relative position for fixing three optical fiber 201,
Within the scope of needed for being accurately controlled in subsequent collimator light bundle nature；For the wavelength-division multiplex of Thin Film Filter 204
Film layer, when optical signal passes through the film layer with different angle, drift phenomenon can occur for the transflection wavelength of film layer, and therefore, this is practical
Novel reflective wavelength division multiplex device need to meet the optical signal of two secondary reflections with equal angular by the film layer, want to reach this
It asks, using the capillary hole site of three optical fiber capillaries 202 of design, it is made to meet the position distribution mode of right angled isosceles triangle,
And using the optical fiber 201a an of sharply angled position as input terminal, the optical fiber 201b of another sharply angled position is as first reflection
Output end, the optical fiber 201c of square position uses as the output end of the second secondary reflection.
Claims (5)
1. a kind of reflective wavelength division multiplexer, it is characterised in that: Thin Film Filter end and the reflective bar of three optical fiber collimators are fixed
Connection, three optical fiber collimators and reflective bar and outer glass sleeve both ends inner wall fixed bonding.
2. a kind of reflective wavelength division multiplexer according to claim 1, it is characterised in that: the knot of three optical fiber collimator
Structure is: three optical fiber are respectively placed in three pores of three optical fiber glass capillaries, and blend compounds water is adhesively fixed, three optical fiber hairs
The beveled end of thin glass tube and the opposite bonding of the beveled end of self-focusing lens, the planar ends of self-focusing lens and Thin Film Filter are viscous
It connects, which is coated with the one side of wavelength-division multiplex film layer backwards to self-focusing lens.
3. a kind of reflective wavelength division multiplexer according to claim 2, it is characterised in that: the pore of three optical fiber capillaries
Position uses the position distribution mode of right angled isosceles triangle.
4. a kind of reflective wavelength division multiplexer according to claim 3, it is characterised in that: one in three optical fiber collimator
The optical fiber of common end of the optical fiber of a sharply angled position as transmission all wavelengths signal, another sharply angled position is a certain as meeting
The signal transmission end of specific wavelength, the optical fiber of square position is as other wavelength signals in addition to the above signal specific wavelength
Transmission end.
5. a kind of reflective wavelength division multiplexer according to claim 1, it is characterised in that: the reflective bar is one cylindrical
Glass, one of end face are coated with the film that is all-trans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822266443.1U CN209148906U (en) | 2018-12-28 | 2018-12-28 | Reflective wavelength division multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822266443.1U CN209148906U (en) | 2018-12-28 | 2018-12-28 | Reflective wavelength division multiplexer |
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| CN209148906U true CN209148906U (en) | 2019-07-23 |
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| CN201822266443.1U Active CN209148906U (en) | 2018-12-28 | 2018-12-28 | Reflective wavelength division multiplexer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501788A (en) * | 2019-08-21 | 2019-11-26 | 武汉光迅科技股份有限公司 | A kind of double integrated five port optical devices and preparation method thereof |
| WO2022131634A1 (en) * | 2020-12-16 | 2022-06-23 | 주식회사 에스엘테크놀로지 | Optical device for wavelength division multiplexing that eliminates defects caused by outgas |
-
2018
- 2018-12-28 CN CN201822266443.1U patent/CN209148906U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501788A (en) * | 2019-08-21 | 2019-11-26 | 武汉光迅科技股份有限公司 | A kind of double integrated five port optical devices and preparation method thereof |
| WO2022131634A1 (en) * | 2020-12-16 | 2022-06-23 | 주식회사 에스엘테크놀로지 | Optical device for wavelength division multiplexing that eliminates defects caused by outgas |
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