CN204241766U - The DQPSK interferometer apparatus for regulating of piezoelectric ceramics - Google Patents
The DQPSK interferometer apparatus for regulating of piezoelectric ceramics Download PDFInfo
- Publication number
- CN204241766U CN204241766U CN201420666706.7U CN201420666706U CN204241766U CN 204241766 U CN204241766 U CN 204241766U CN 201420666706 U CN201420666706 U CN 201420666706U CN 204241766 U CN204241766 U CN 204241766U
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- CN
- China
- Prior art keywords
- piezoelectric ceramics
- phase plate
- rod
- optical path
- regulating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of DQPSK interferometer apparatus for regulating of piezoelectric ceramics, and described device includes a phase plate and an operating rod.Phase plate is the glass sheet of rectangular parallelepiped, and operating rod is piezoelectric ceramics rod.Phase plate (1) is bonded in one end of piezoelectric ceramics rod (2), and the optical surface of phase plate (1) and piezoelectric ceramics rod (2) Relative vertical.A kind of optical path difference adjustment device for delay line interferometer of the utility model, can realize regulating to optical path difference.
Description
Technical field
The utility model is the device that a kind of DQPSK interferometer apparatus for regulating of piezoelectric ceramics regulates optical path difference.Particularly relate to the implementation method of the demodulating equipment of a kind of bi Phase Shift Keying (DQPSK, Differential QuaternaryPhase-Shift Keying) modulation signal.
Background technology
DQPSK modulation signal must have corresponding demodulating equipment can carry out structure to signal.Delay line interferometer is a class device architecture of optical field widespread use, the ultimate principle of delay line interferometer is: by a beam splitter, light is assigned to two and interferes in arm, again by together photosynthetic by two-arm of a bundling device, when there is optical path difference between two interference arms of interferometer, the output spectrum of this kind of interferometer is sinusoid distribution.Visible, optical path difference is requisite parts in delay line interferometer, usual people insert phase plate in the optical path to realize optical path difference, but, in conventional instrument, phase plate is normally in fixed form, when needing the different optical path difference of acquisition to be, need the phase plate changing different-thickness, not only changing wastes time and energy, and need to be equipped with the different phase plate of many thickness, increase the weight of use cost undoubtedly.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of optical path difference regulating device that can realize adjustment to optical path difference.
The purpose of this utility model is achieved in that a kind of optical path difference adjustment device for delay line interferometer, described device includes phase plate and micro piezoelectric ceramic rod, described phase plate is a kind of optical glass of rectangular parallelepiped, and piezoelectric ceramics rod is a kind of ceramic rod of low voltage drive.
A kind of optical path difference adjustment device for delay line interferometer of the utility model, described phase plate is vertically pasted onto one end of piezoelectric ceramics rod, and piezoelectric ceramics rod is as operating rod.
Compared with prior art, the beneficial effects of the utility model are:
The utility model regulating device, drives phase plate to relatively rotate by the swing of piezoelectric ceramics rod, changes the light path of light by regulating device, thus makes to interfere the optical path difference of arm to there occurs change by two-way.Without the need to being equipped with the phase plate of various different-thickness after use the utility model regulating device, reduce the use cost of user, when needs change optical path difference, only needing to add a low pressure (0-5V) makes piezoelectric ceramics rod depart from original position to piezoelectric ceramics rod, thus drives the angle of phase plate can obtain suitable optical path difference.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of optical path difference adjustment device for delay line interferometer of the utility model.
Fig. 2 is the view that a kind of optical path difference adjustment device for delay line interferometer of the utility model puts into interference cavity.
Fig. 3 is the view that the phase plate of a kind of optical path difference adjustment device for delay line interferometer of the utility model changes light path in interference cavity.
Wherein:
Phase plate 1, piezoelectric ceramics rod 2, interference cavity wall 1, interference cavity wall 24.
Embodiment
See Fig. 1, a kind of optical path difference adjustment device for delay line interferometer that the utility model relates to, described device includes phase plate 1 and piezoelectric ceramics rod 2, described phase plate 353 gluing one end being connected on piezoelectric ceramics rod 2, the optical surface of phase plate 1 is vertical with piezoelectric ceramics rod 2, piezoelectric ceramics rod 2 is operating rod, and afterbody has two electrodes, accepts the power supply of 0-5V.
During use, by the utility model regulating device, be inserted in the light path in two-way interference cavity wall, the utility model regulating device other end is fixed.Two electrodes of piezoelectric ceramics rod 2 afterbodys, are connected on the power supply of 0-5V.Light beam is through phase plate 1, when needs change optical path difference, the power supply of transfer piezoelectric ceramics rod 2, piezoelectric ceramics rod 2 is made to depart from original position, the Angulation changes of such phase plate 1, thus change the net thickness of light signal through phase plate 1, thus make to interfere the optical path difference of the light beam of arm to there occurs change by two.
Claims (2)
1. the DQPSK interferometer apparatus for regulating of a piezoelectric ceramics, it is characterized in that: described device includes phase plate (1) and piezoelectric ceramics rod (2), described phase plate (1) is bonded in one end of piezoelectric ceramics rod (2), and the optical surface of phase plate (1) and piezoelectric ceramics rod (2) Relative vertical.
2. the DQPSK interferometer apparatus for regulating of a kind of piezoelectric ceramics as claimed in claim 1, is characterized in that: described phase plate (1) changes its angle to change light path by piezoelectric ceramics rod (2) as operating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666706.7U CN204241766U (en) | 2014-11-06 | 2014-11-06 | The DQPSK interferometer apparatus for regulating of piezoelectric ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666706.7U CN204241766U (en) | 2014-11-06 | 2014-11-06 | The DQPSK interferometer apparatus for regulating of piezoelectric ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241766U true CN204241766U (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420666706.7U Expired - Fee Related CN204241766U (en) | 2014-11-06 | 2014-11-06 | The DQPSK interferometer apparatus for regulating of piezoelectric ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307472A (en) * | 2018-08-28 | 2019-02-05 | 江苏大学 | Minute yardstick transparent body defocus distance-measuring device and method based on additive phase piece |
-
2014
- 2014-11-06 CN CN201420666706.7U patent/CN204241766U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307472A (en) * | 2018-08-28 | 2019-02-05 | 江苏大学 | Minute yardstick transparent body defocus distance-measuring device and method based on additive phase piece |
| CN109307472B (en) * | 2018-08-28 | 2020-11-03 | 江苏大学 | Device and method for measuring out-of-focus distance of micro-scale transparent body based on additional phase plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151106 |
|
| EXPY | Termination of patent right or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Hong Yingying Document name: Notification of Termination of Patent Right |