CN107589489A - A kind of light attenuation device of integrated form - Google Patents
A kind of light attenuation device of integrated form Download PDFInfo
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- CN107589489A CN107589489A CN201710898937.9A CN201710898937A CN107589489A CN 107589489 A CN107589489 A CN 107589489A CN 201710898937 A CN201710898937 A CN 201710898937A CN 107589489 A CN107589489 A CN 107589489A
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Abstract
The present invention relates to optical attenuator field, and in particular to a kind of light attenuation device of integrated form, the light attenuation device also include the first optical splitter and the second optical splitter, in addition to the first optical power monitor and the second optical power monitor；The optical signal that the input optical fibre projects passes through the first optical splitter, part optical signals are by the first spectrophotometric reflection into the first optical power monitor, and, the optical signal that the optical attenuation mechanism projects passes through the second optical splitter, is incident to the part optical signals of output optical fibre by the second spectrophotometric reflection into the second optical power monitor.Optical power monitor is arranged in light attenuation device by designing a kind of light attenuation device of integrated form by the present invention, it is not necessary to additionally using optical power monitor, is reduced space hold volume, while is simplified aerial lug, make Products integration, stability is stronger；Further, production cost is reduced, improves overall performance requirement.
Description
Technical field
The present invention relates to optical attenuator field, and in particular to a kind of light attenuation device of integrated form.
Background technology
Optical attenuator is the device for being decayed to luminous power, and it is mainly used in the index measurement, short of fibre system
The occasion such as the signal attenuation of range communication systems and system test.
Optical attenuator is a kind of very important fibre optics passive device, and it can be by the requirement of user by light signal energy
Expectedly decayed, be usually used in absorbing or reflect away luminous power surplus, in the loss of assessment system and various tests.At present,
Seriation optical attenuator is widely used to optical communication field, is brought conveniently to user.
In general, optical attenuator can be divided into fixed attenuator, classification adjustable type attenuator, the decay of continuously adjustabe type
Device, continuously with rank groups mould assembly attenuator etc..
Particularly adjustable optical attenuator, it is indispensable device in many industry opto-electronic industries, for regulating and controlling to input
To the luminous power size of receiving terminal, but usually required when using adjustable optical attenuator in its input and output end increase light work(
Rate monitoring supports the normal work of system to allow system that attenuator regulation is arrived into suitable attenuation.Further, above work(
At present three devices, two optical power monitoring devices (Tap-PD) and an adjustable optical attenuator can be used to realize more.
But realized using two optical power monitoring devices (Tap-PD) and an adjustable optical attenuator to tunable optical
The control of attenuator, its cost is big, and overall space volume is big, is unfavorable for low cost and minimizes integrated development trend.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of light of integrated form
Attenuating device, it is big to solve existing adjustable optical attenuator cost, and overall space volume is big, and it is integrated to be unfavorable for low cost miniaturization
Development trend the problem of.
The technical solution adopted for the present invention to solve the technical problems is：A kind of light attenuation device of integrated form, light are provided
Attenuating device includes input optical fibre, output optical fibre and optical attenuation mechanism, and the optical signal that the input optical fibre projects passes through optical attenuation
After mechanism carries out attenuated optical signal, output optical fibre is incident to, the light attenuation device also includes being arranged on input optical fibre and light decay
Subtract the first optical splitter between mechanism, and the second optical splitter being arranged between optical attenuation mechanism and output optical fibre, the light
Attenuating device also includes the first optical power monitor and the second optical power monitor；Wherein,
The optical signal that the input optical fibre projects passes through the first optical splitter, part optical signals by the first spectrophotometric reflection extremely
In first optical power monitor, and, the optical signal that the optical attenuation mechanism projects passes through the second optical splitter, is incident to output light
Fine part optical signals are by the second spectrophotometric reflection into the second optical power monitor.
Wherein, preferred version is：The optical attenuation mechanism includes adjustable reflective mirror, and the adjustable reflective mirror will be from input light
The optical signal that fibre projects reflexes to output optical fibre, and adjusts the angle for the optical signal for being incident to output optical fibre, enters traveling optical signal and declines
Subtract.
Wherein, preferred version is：First optical splitter and the second optical splitter integral type are arranged to total optical splitter, described defeated
Enter optical fiber and output optical fibre is arranged at the side of adjustable reflective mirror, the optical signal that the input optical fibre projects passes through total optical splitter
After be transmitted through adjustable reflective mirror, and return total optical splitter by adjustable mirror reflection, and output optical fibre is transmitted through from total optical splitter；
Wherein, the optical signal that total optical splitter projects part from input optical fibre reflexes to the first optical power monitor,
Part is returned and be incident to the optical signal of output optical fibre by total optical splitter from adjustable mirror reflection reflexes to the second luminous power
Monitor.
Wherein, preferred version is：The light attenuation device also includes being arranged on the second optical power monitor and total optical splitter
Between light bar, the light bar stops astigmatism.
Wherein, preferred version is：The adjustable reflective mirror is MEMS ytterbiums face, by changing turning for voltage-regulation MEMS ytterbiums face
Angle.
Wherein, preferred version is：The light attenuation device includes a processing module, the processing module and adjustable reflective mirror
Connection, and the corner for corresponding to adjustable reflective mirror is set according to default light decrement, adjust the optical signal reflexed in output optical fibre
Energy size.
Wherein, preferred version is that the reflectivity of total optical splitter is 1~5%.
Wherein, preferred version is：The light attenuation device also includes being arranged on input optical fibre or output optical fibre and total optical splitter
Between collimater.
Wherein, preferred version is：The optical attenuation mechanism is removable between input optical fibre and output optical fibre including being arranged on
Dynamic baffle plate, the removable baffle plate are blocked part and inputted to the optical signal of output optical fibre, and by adjusting removable baffle plate position,
Carry out attenuated optical signal regulation.
Wherein, preferred version is：The light attenuation device includes a processing module, the processing module and removable baffle plate
Connection, and the shift position for corresponding to removable baffle plate is set according to default light decrement, regulation is incident to the light in output optical fibre
Signal energy size.
The beneficial effects of the present invention are compared with prior art, the present invention is by designing a kind of optical attenuation of integrated form
Device, optical power monitor is arranged in light attenuation device, it is not necessary to additionally using optical power monitor, reduce space hold
Volume, while simplify aerial lug, make Products integration, stability is stronger；Further, production cost is reduced, is improved overall
Performance requirement.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the light attenuation device scheme one of integrated form of the present invention；
Fig. 2 is the structural representation of the light attenuation device scheme two of integrated form of the present invention；
Fig. 3 is the structural representation of processing module embodiment one of the present invention；
Fig. 4 is the structural representation of processing module embodiment two of the present invention.
Embodiment
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
As depicted in figs. 1 and 2, the present invention provides a kind of preferred embodiment of the light attenuation device of integrated form.
A kind of light attenuation device of integrated form, light attenuation device include input optical fibre 11, output optical fibre 12 and optical attenuation machine
Structure, the optical signal that the input optical fibre 11 projects are incident to output optical fibre 12 after optical attenuation mechanism carries out attenuated optical signal,
The light attenuation device also includes the first optical splitter being arranged between input optical fibre 11 and optical attenuation mechanism, and is arranged on light
The second optical splitter between damping mechanism and output optical fibre 12, the light attenuation device also include the He of the first optical power monitor 41
Second optical power monitor 42.
Wherein, the optical signal that the input optical fibre 11 projects passes through the first optical splitter, and part optical signals pass through the first light splitting
Device is reflexed in the first optical power monitor 41, and, the optical signal that the optical attenuation mechanism projects passes through the second optical splitter, enters
The part optical signals of output optical fibre 12 are incident upon by the second spectrophotometric reflection into the second optical power monitor 42.
Specifically, optical power monitor is integrated in light attenuation device by the light attenuation device of integrated form, is reduced space and is accounted for
With volume, while simplify aerial lug, make Products integration, stability is stronger；And first optical power monitor 41 obtain into
The luminous power for the optical signal being incident upon in light attenuation device, the second optical power monitor 42 obtain the light letter for being incident to output optical fibre 12
Number luminous power, be to be projected after optical attenuation is handled from output optical fibre 12 due to being incident in light attenuation device, the second smooth work(
The optical signal power that rate monitor 42 detects is significantly greater than the optical signal power that the first optical power monitor 41 detects, specifically
Depending on the degree of optical attenuation.
Wherein, optical attenuator is the device for being decayed to luminous power, and the index that it is mainly used in fibre system is surveyed
The occasions such as amount, the signal attenuation of short range communication systems and system test.Launch optical signal when input optical fibre 11 and incide light
After attenuator, optical power attenuation is carried out；The surface of output optical fibre 12 is being incident to and is entering the decay of traveling optical signal, while to the light of incidence
Optical signal after signal and decay carries out optical power monitoring, obtains optical power attenuation value, realizes associative operation.
In the present embodiment, there is provided two kinds of light attenuation device schemes.
Scheme one (and with reference to figure 1),
The optical attenuation mechanism includes adjustable reflective mirror 21, the light that the adjustable reflective mirror 21 will project from input optical fibre 11
Signal reflex adjusts the angle for the optical signal for being incident to output optical fibre 12 to output optical fibre 12, carries out attenuated optical signal.It is preferred that
, and it is arranged to total optical splitter 3, the He of input optical fibre 11 with reference to figure 1, first optical splitter and the second optical splitter integral type
Output optical fibre 12 is arranged at the side of adjustable reflective mirror 21, and the optical signal that the input optical fibre 11 projects passes through total optical splitter 3
After be transmitted through adjustable reflective mirror 21, and be reflected back total optical splitter 3 by adjustable reflective mirror 21, and be transmitted through from total optical splitter 3 defeated
Go out optical fiber 12；
Wherein, the optical signal that total optical splitter 3 projects part from input optical fibre 11 reflexes to the first optical power monitoring
Part is reflected back and is incident to the optical signal of output optical fibre 12 and reflexed to by device 41, total optical splitter 3 from adjustable reflective mirror 21
Second optical power monitor 42.And the reflectivity of total optical splitter 3 is 1~5%.
Further, the light attenuation device also includes being arranged between the second optical power monitor 42 and total optical splitter 3
Light bar 51, the light bar 51 stops astigmatism, improves the Detection accuracy of the second optical power monitor 42.
Further, the adjustable reflective mirror 21 is MEMS ytterbiums face, by the corner for changing voltage-regulation MEMS ytterbiums face.Tool
Body, MEMS ytterbiums face includes the rotating mechanism of reflective mirror and setting on a mirror, and reflective mirror is carried out by rotating mechanism
Rotate.
Further, the light attenuation device also include being arranged on input optical fibre 11 or output optical fibre 12 and total optical splitter 3 it
Between collimater 13.Preferably, collimater 13 is two-way collimater, and its side includes an input and output end, respectively with it is defeated
Enter optical fiber 11 and output optical fibre 12 connects, its input of opposite side bag one and output end, respectively input optical signal to adjustable anti-
In light microscopic 21, and it is reflected back by adjustable reflective mirror 21 output end of two-way collimater.Wherein, collimater 13 belongs to optical fiber and led to
An optical element for input and output for letter optical device, its structure are very simple --- and the diverging light of optical fiber outflow passes through preposition
Similar convex lens become directional light (Gaussian beam).Its effect is to make being coupled into required device of light maximal efficiency
Or easily such as receive the receiving of optical signal maximal efficiency.So it has an important parameter：Insertion Loss, present technology are reachable
To below 0.15dB.
Scheme two (and with reference to figure 2),
The optical attenuation mechanism includes the removable baffle plate 22 being arranged between input optical fibre 11 and output optical fibre 12, described
Removable baffle plate 22 is blocked part and inputted to the optical signal of output optical fibre 12, and by adjusting the position of removable baffle plate 22, carries out
Attenuated optical signal is adjusted.
Wherein, the optical signal that the input optical fibre 11 projects passes through the first optical splitter 31, and part optical signals pass through first point
Light device 31 is reflexed in the first optical power monitor 41, and, the optical signal that the optical attenuation mechanism projects is by the second light splitting
Device 32, the part optical signals for being incident to output optical fibre 12 are reflexed in the second optical power monitor 42 by the second optical splitter 32.
Specifically, removable baffle plate 22 includes the track being arranged in light attenuation device, and sets gear in orbit
Plate, in addition to the mobile device being connected with baffle plate, such as motor or cylinder, baffle plate is pushed or pull on by mobile device and moved in track
It is dynamic；And baffle plate setting is on the transmission optical circuit path of input optical fibre 11 and output optical fibre 12, for stop portions from input light
Fibre 11 is inputted to the optical signal of output optical fibre 12, so as to realize optical attenuation.
As shown in Figure 3 and Figure 4, the present invention provides a kind of preferred embodiment of processing module.
The light attenuation device includes a processing module 60, and the processing module 60 is connected with adjustable reflective mirror 21, and root
The corner of corresponding adjustable reflective mirror 21 is set according to default light decrement, it is big to adjust the light signal energy reflexed in output optical fibre 12
It is small.
Further, the processing module 60 is also connected with removable baffle plate 22, and according to the setting pair of default light decrement
The shift position of removable baffle plate 22 is answered, regulation is incident to the light signal energy size in output optical fibre 12.
Certainly, processing module 60 can also choose outside processor, such as personal computer, industrial control unit (ICU) equipment,
The cost of light attenuation device is reduced, reduces the overall space-consuming of light attenuation device.
Further, processing module 60 also connects with the first optical power monitor 41 and the second optical power monitor 42 respectively
Connect, optical power value corresponding to acquisition.
As described above, only preferred embodiment is not intended to limit the scope of the present invention, Fan Yibenfa
The equivalent change or modification that bright claim is made, it is all that the present invention is covered.
Claims (10)
1. a kind of light attenuation device of integrated form, light attenuation device includes input optical fibre, output optical fibre and optical attenuation mechanism, described
The optical signal that input optical fibre projects is incident to output optical fibre after optical attenuation mechanism carries out attenuated optical signal, it is characterised in that：
The light attenuation device also includes the first optical splitter being arranged between input optical fibre and optical attenuation mechanism, and is arranged on light decay
Subtract the second optical splitter between mechanism and output optical fibre, the light attenuation device also includes the first optical power monitor and the second light
Power monitor；Wherein,
The optical signal that the input optical fibre projects passes through the first optical splitter, and part optical signals pass through the first spectrophotometric reflection to first
In optical power monitor, and, the optical signal that the optical attenuation mechanism projects passes through the second optical splitter, is incident to output optical fibre
Part optical signals are by the second spectrophotometric reflection into the second optical power monitor.
2. light attenuation device according to claim 1, it is characterised in that：The optical attenuation mechanism includes adjustable reflective mirror,
The optical signal projected from input optical fibre is reflexed to output optical fibre by the adjustable reflective mirror, and adjusts the light for being incident to output optical fibre
The angle of signal, carry out attenuated optical signal.
3. light attenuation device according to claim 2, it is characterised in that：First optical splitter and the second optical splitter one
Formula is arranged to total optical splitter, and the input optical fibre and output optical fibre are arranged at the side of adjustable reflective mirror, the input optical fibre
The optical signal of injection is transmitted through adjustable reflective mirror after total optical splitter, and returns total optical splitter by adjustable mirror reflection, and
Output optical fibre is transmitted through from total optical splitter；
Wherein, the optical signal that total optical splitter projects part from input optical fibre reflexes to the first optical power monitor, described
Part is returned and be incident to the optical signal of output optical fibre by total optical splitter from adjustable mirror reflection reflexes to the second optical power monitoring
Device.
4. light attenuation device according to claim 2, it is characterised in that：The light attenuation device also includes being arranged on second
Light bar between optical power monitor and total optical splitter, the light bar stop astigmatism.
5. light attenuation device according to claim 2, it is characterised in that：The adjustable reflective mirror is MEMS ytterbiums face, is passed through
Change the corner in voltage-regulation MEMS ytterbiums face.
6. the light attenuation device according to claim 2 or 5, it is characterised in that：The light attenuation device includes a processing mould
Block, the processing module are connected with adjustable reflective mirror, and the corner of corresponding adjustable reflective mirror is set according to default light decrement, are adjusted
Save the light signal energy size reflexed in output optical fibre.
7. light attenuation device according to claim 3, it is characterised in that：The reflectivity of total optical splitter is 1~5%.
8. light attenuation device according to claim 3, it is characterised in that：The light attenuation device also includes being arranged on input light
The fine or collimater between output optical fibre and total optical splitter.
9. light attenuation device according to claim 1, it is characterised in that：The optical attenuation mechanism includes being arranged on input light
Removable baffle plate between fine and output optical fibre, the removable baffle plate are blocked part and inputted to the optical signal of output optical fibre, and
By adjusting removable baffle plate position, attenuated optical signal regulation is carried out.
10. light attenuation device according to claim 9, it is characterised in that：The light attenuation device includes a processing module,
The processing module is connected with removable baffle plate, and the shift position of corresponding removable baffle plate is set according to default light decrement,
Regulation is incident to the light signal energy size in output optical fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898937.9A CN107589489A (en) | 2017-09-28 | 2017-09-28 | A kind of light attenuation device of integrated form |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898937.9A CN107589489A (en) | 2017-09-28 | 2017-09-28 | A kind of light attenuation device of integrated form |
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| CN107589489A true CN107589489A (en) | 2018-01-16 |
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| CN201710898937.9A Pending CN107589489A (en) | 2017-09-28 | 2017-09-28 | A kind of light attenuation device of integrated form |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345067A (en) * | 2017-01-23 | 2018-07-31 | Ii-Vi有限公司 | A kind of free space variable optical attenuator |
| CN110320601A (en) * | 2018-03-30 | 2019-10-11 | 福州高意通讯有限公司 | A kind of 1XN light intensity distributor |
-
2017
- 2017-09-28 CN CN201710898937.9A patent/CN107589489A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345067A (en) * | 2017-01-23 | 2018-07-31 | Ii-Vi有限公司 | A kind of free space variable optical attenuator |
| CN110320601A (en) * | 2018-03-30 | 2019-10-11 | 福州高意通讯有限公司 | A kind of 1XN light intensity distributor |
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Address after: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Applicant after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Applicant before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |