CN210053407U - Polarization extinction ratio testing jig - Google Patents
Polarization extinction ratio testing jig Download PDFInfo
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- CN210053407U CN210053407U CN201921285140.2U CN201921285140U CN210053407U CN 210053407 U CN210053407 U CN 210053407U CN 201921285140 U CN201921285140 U CN 201921285140U CN 210053407 U CN210053407 U CN 210053407U
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- optical power
- extinction ratio
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Abstract
The utility model relates to an optical equipment tests technical field, in particular to testing arrangement of laser instrument polarization extinction ratio. The utility model provides a test fixture of polarization extinction ratio, has set gradually light source adjustment mechanism, gyration slip table and optical power accredited testing organization along the light path direction on the optical platform, the gyration slip table is connected to light source adjustment mechanism front end, is provided with the polaroid on the gyration slip table, be provided with the optical power meter in the optical power accredited testing organization, the optical power meter is located the place ahead of gyration slip table. The utility model can pass through P
maxAnd P
minThe quality and deviation of linear polarization coupling can be more intuitively evaluated according to the angle between the corresponding scale and the polarization direction, and the angle of the coupling can be purposefully rotated according to the direction of the deviationThe coupling quality is corrected in time to achieve better coupling quality, so that a larger extinction ratio is achieved, the guiding property is stronger, the test result is accurate, the structure is exquisite, the operation is convenient, the measurement stability and the production efficiency are improved, and the equipment cost is reduced.
Description
Technical Field
The utility model relates to an optical equipment tests technical field, in particular to testing arrangement of laser instrument polarization extinction ratio.
Background
With coherent detection becoming the core technology in sensing fields such as distributed sensing, angular velocity sensing, current sensing, etc., controlling the polarization state and realizing stable output of interference signals is a key part thereof, and polarized light also plays a crucial role in the field of secure communication. The polarized light secret communication mainly analyzes that when a transmission medium is bent and disturbed to be intercepted, the polarization state of an optical signal transmitted in an optical fiber is influenced by the change of the external environment, the change of the polarization state of emergent light reflects certain change of the external environment, and the real-time online monitoring can be realized by detecting the change. At present, the mainstream SANTEC polarization extinction ratio tester has the advantages of high testing speed, simple and convenient operation, high price, less selectable wavelength, lower allowable input optical power, less visual testing process and less guiding property.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming among the prior art polarization extinction ratio tester price ratio and being more expensive, optional wavelength is less, and the technical problem that allowable input optical power is low on the one side provides a polarization extinction ratio's test fixture, can allow incident optical power to be higher, and guidance quality and intuition nature are stronger to the structure is exquisite, convenient operation, and the cost is lower.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides a test fixture of polarization extinction ratio, has set gradually light source adjustment mechanism, gyration slip table and optical power accredited testing organization along the light path direction on the optical platform, the gyration slip table is connected to light source adjustment mechanism front end, is provided with the polaroid on the gyration slip table, be provided with the optical power meter in the optical power accredited testing organization, the optical power meter is located the place ahead of gyration slip table.
Further, light source adjustment mechanism includes XY axle slip table, first support, the solid fixed ring of fiber connector, fixed first support on the XY axle slip table, the solid fixed ring of fiber connector in first support upper end, the solid fixed ring front end of fiber connector connects the gyration slip table of connecting band scale.
Further, gyration slip table includes the supporting seat, installs the carousel of taking the scale on the supporting seat, and fixed polaroid is gone up to the carousel, is provided with the fine setting knob on the carousel.
Furthermore, the optical power testing mechanism further comprises a Z-axis sliding table and a second support, the second support is fixed on the Z-axis sliding table, and an optical power meter is fixed on the upper end of the second support.
The utility model discloses the incident optical power that can allow is higher, in the test procedure, can pass through P
maxAnd P
minThe quality and deviation of linear polarization coupling are evaluated more visually according to the angle between the corresponding scale and the polarization direction, the coupling angle is rotated purposefully according to the direction of the deviation, and the coupling quality can be corrected and better in time, so that the larger extinction ratio is achieved, the guidance performance is stronger, the test result is accurate, the structure is exquisite, the operation is convenient, the measurement stability is improved, the production efficiency is improved, and the equipment cost is greatly reduced.
Drawings
FIG. 1 is an extinction ratio test light path diagram.
Fig. 2 is a structural diagram of the present invention.
Fig. 3 is a front view of the rotary slide table with scale.
Fig. 4 is a right side view of the rotary slide with scale.
In the figure: 1. the optical fiber connector fixing device comprises an optical platform, 2 XY axis sliding tables, 3 first supports, 4Z axis sliding tables, 5 second supports, 6 optical fiber connector fixing rings, 7 rotary sliding tables, 8 optical power meters, 9 polaroids, 10 supporting seats, 11 rotating discs and 12 fine adjustment knobs.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples, but the present invention is not limited to the specific examples.
As shown in fig. 2, a test fixture for polarization extinction ratio has a light source adjusting mechanism, a rotary sliding table 7 and a light power testing mechanism sequentially arranged on an optical platform 1 along a light path direction, the front end of the light source adjusting mechanism is connected with the rotary sliding table 7, a polarizing film 9 is arranged on the rotary sliding table 7, an optical power meter 8 is arranged in the light power testing mechanism, and the optical power meter 8 is located in front of the rotary sliding table 7.
Light source adjustment mechanism includes XY axle slip table 2, first support 3, the solid fixed ring of fiber connector 6, fixed first support 3 on the XY axle slip table 2, the solid fixed ring of fiber connector 6 is fixed to first support 3 upper end, and the solid fixed ring of fiber connector 6 front end connecting band scale of fiber connector revolves slip table 7.
The rotary sliding table 7 comprises a supporting seat 10 as shown in fig. 4, a rotary table 11 with scales is mounted on the supporting seat 10, a polaroid 9 is fixed on the rotary table 11, and a fine adjustment knob 12 is arranged on the rotary table 11.
The optical power testing mechanism further comprises a Z-axis sliding table 4 and a second support 5, the second support 5 is fixed on the Z-axis sliding table 4, and an optical power meter 8 is fixed at the upper end of the second support 5.
By adopting the testing jig for the polarization extinction ratio, the polarization direction of the polarizer 9 is firstly aligned with the 0 scale mark on the turntable 11 and then adhered on the turntable 11, the polarization maintaining optical fiber adopts a bear cat eye optical fiber, the polarization maintaining optical fiber FC connector K of the light source to be tested is keyed, that is, the panda eye direction is upward inserted into the optical fiber connector fixing ring 6 and fixed by the bolt, as shown in the extinction ratio test light path diagram of fig. 1, the polarized light emitted from the optical fiber passes through the rotatable polarizer 9, then the light enters the optical power meter 8, the light sensing surface of the optical power meter 8 is positioned at the center of the rotary sliding table 7 by adjusting the XY axis sliding table sliding rod and the Z axis sliding table, whether the adjustment is in place can be judged through the reading of the optical power meter 8, then, the turntable 11 is rotated, the degree of the optical power meter 8 is changed along with the rotation of the turntable 11, the optical power meter 8 detects the maximum optical power P by adjusting the dial 11 and the fine adjustment knob 12.
maxAt this time, the polarization direction of the polarizing plate 9 (the arrow in fig. 4 indicates the polarization direction of the polarizing plate) coincides with the polarization direction of the polarized light, and the minimum optical power P is detected by the optical power meter 8 by adjusting the rotating plate 11 and the fine adjustment knob 12
minAt this time, the polarization direction of the polarizing plate 9 is orthogonal to the polarization direction of the polarized light, so that the extinction ratio can be calculated by the following formula:
during the test, P can pass
maxAnd P
minThe quality and deviation of linear polarization coupling are evaluated more visually according to the angle between the corresponding scale and the polarization direction, the coupling angle is rotated more purposefully according to the direction of the deviation, and the coupling quality can be corrected more optimally in time, so that the higher extinction ratio is achieved, the guidance performance is stronger, the test result is accurate, the structure is exquisite, the operation is convenient, the measurement stability is improved, the production efficiency is improved, and the equipment cost is greatly reduced.
The above description is further detailed in connection with the preferred embodiments of the present invention, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses a under the prerequisite of the design, can also make simple deduction and replacement, all should regard as the utility model discloses a protection scope.
Claims (4)
1. A test fixture for polarization extinction ratio is characterized in that: light source adjusting mechanism, gyration slip table (7) and optical power accredited testing organization have set gradually along the light path direction on optical platform (1), gyration slip table (7) are connected to light source adjusting mechanism front end, are provided with polaroid (9) on gyration slip table (7), be provided with optical power meter (8) among the optical power accredited testing organization, optical power meter (8) are located the place ahead of gyration slip table (7).
2. The apparatus for testing polarization extinction ratio of claim 1, wherein: the light source adjusting mechanism comprises an XY shaft sliding table (2), a first support (3) and a fiber connector fixing ring (6), the first support (3) is fixed on the XY shaft sliding table (2), the fiber connector fixing ring (6) is fixed at the upper end of the first support (3), and the front end of the fiber connector fixing ring (6) is connected with a rotary sliding table (7).
3. The apparatus for testing polarization extinction ratio of claim 1, wherein: the rotary sliding table (7) comprises a supporting seat (10), a rotary table (11) with scales is mounted on the supporting seat (10), a polaroid sheet (9) is fixed on the rotary table (11), and a fine adjustment knob (12) is arranged on the rotary table (11).
4. The apparatus for testing polarization extinction ratio of claim 1, wherein: the optical power testing mechanism further comprises a Z-axis sliding table (4) and a second support (5), the second support (5) is fixed on the Z-axis sliding table (4), and an optical power meter (8) is fixed at the upper end of the second support (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285140.2U CN210053407U (en) | 2019-08-09 | 2019-08-09 | Polarization extinction ratio testing jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285140.2U CN210053407U (en) | 2019-08-09 | 2019-08-09 | Polarization extinction ratio testing jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210053407U true CN210053407U (en) | 2020-02-11 |
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ID=69399131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921285140.2U Active CN210053407U (en) | 2019-08-09 | 2019-08-09 | Polarization extinction ratio testing jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210053407U (en) |
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2019
- 2019-08-09 CN CN201921285140.2U patent/CN210053407U/en active Active
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