CN210626004U

CN210626004U - Optical fiber simulation PMD testing device

Info

Publication number: CN210626004U
Application number: CN201922064761.4U
Authority: CN
Inventors: 易文涛; 杨欣
Original assignee: Yichang Yuandu Technology Co ltd
Current assignee: Yichang Yuandu Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-05-26
Anticipated expiration: 2029-11-26

Abstract

The utility model provides an optic fibre simulation PMD testing arrangement, includes the box, is equipped with first wrapping post and second wrapping post in the box, the one end of box is equipped with two optic fibre through-holes, and the top of surveying in the box is equipped with heating device. The utility model provides an optic fibre simulation PMD testing arrangement can simulate optic fibre temperature, twist reverse, tensile state in the use to realize the environmental simulation, measure the PMD parameter of optic fibre under this environment, provide the reference data for the production of optic fibre and install.

Description

Optical fiber simulation PMD testing device

Technical Field

The utility model relates to an optical fiber test technical field, especially an optical fiber simulation PMD testing arrangement.

Background

Polarization mode dispersion means that the cause of polarization dispersion in optical fiber is that the fundamental mode in actual optical fiber contains two polarization modes which are perpendicular to each other, and the optical fiber is difficult to be protected from external action during the propagation process along the optical fiber. Factors such as bending, vibration, temperature and pressure change or disturbance cause the two modes to couple. And the propagation speeds of the two are different, so that the optical pulse is widened, and the amount of widening is equivalent to random dispersion without determination, thereby causing signal distortion. Most of the traditional fiber PMD test modes are used for PMD test after the fiber is produced or installed; the test after the production can not simulate the actual use environment of the optical fiber, and the optical fiber is not convenient to adjust after the test PMD result is installed.

Disclosure of Invention

The utility model aims to solve the technical problem that a fiber simulation PMD testing arrangement is provided, simulates out the service environment of optic fibre, simulates out the PMD parameter of optic fibre before optic fibre is installed.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides an optic fibre simulation PMD testing arrangement, includes the box, is equipped with first wrapping post and second wrapping post in the box, the one end of box is equipped with two optic fibre through-holes, and the top of surveying in the box is equipped with heating device.

Preferably, a plurality of winding slots are formed in the first winding post and the second winding post.

Preferably, the diameter of the winding slot is gradually narrowed from bottom to top.

Preferably, the first winding post is fixedly arranged in the box body, and the second winding post slides in the sliding groove and the sliding rail; the lower extreme at the second wrapping post is equipped with the gag lever post, and the upper end is equipped with stop screw, and during the gag lever post stretched into the spout, stop screw passed the fluting of slide rail, and the sea includes the first nut with stop screw matched with, and first nut is used for fixed second wrapping post.

Preferably, the side wall of the second wrapping post is connected with the hook of the tension meter through a hanging ring, the other end of the tension meter is connected with the push-pull screw rod, the push-pull screw rod penetrates through the side wall of the box body, and a second nut matched with the push-pull screw rod is arranged outside the side wall.

Preferably, the heating device comprises a ceramic heating lamp, the ceramic heating lamp is connected to a lamp holder, the lamp holder is arranged on the inner side of the top of the box body, a temperature controller is arranged on the outer side of the top of the box body, and the lamp holder is connected with the temperature controller.

Preferably, the side of the box body is hinged with a box door.

The utility model provides an optic fibre simulation PMD testing arrangement can simulate optic fibre temperature, twist reverse, tensile state in the use to realize the environmental simulation, measure the PMD parameter of optic fibre under this environment, provide the reference data for the production of optic fibre and install.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

fig. 3 is a schematic structural view of a second wrapping post according to the present invention.

Detailed Description

As shown in fig. 1, the device for testing PMD simulation of optical fibers comprises a box body 1, wherein a first wrapping post 2 and a second wrapping post 3 are arranged in the box body 1, one end of the box body 1 is provided with two optical fiber through holes 4, and a heating device is arranged at the top of the box body 1. And (3) winding the optical fiber to be tested into an 8 shape on the first wrapping post 2 and the second wrapping post 3, and then penetrating out two ends of the optical fiber from the optical fiber through hole 4 to be connected with the PND tester.

Preferably, a plurality of winding slots 5 are formed on the first winding post 2 and the second winding post 3. The optical fiber is wound in the winding groove 5 to prevent the optical fiber from sliding.

Preferably, the diameter of the winding slot 5 is gradually narrowed from bottom to top. The winding grooves with different diameters can be rotated according to different curvatures to be simulated.

Preferably, the first wrapping post 2 is fixedly arranged in the box body 1, and the second wrapping post 3 slides in the sliding groove 6 and the sliding rail 7; be equipped with gag lever post 8 at the lower extreme of second wrapping post 3, the upper end is equipped with stop screw 9, and during gag lever post 8 stretched into spout 6, stop screw 9 passed the fluting of slide rail 7, and the sea includes first nut 10 with stop screw 9 matched with, and first nut 10 is used for fixed second wrapping post 3. The distance between two wrapping posts can be adjusted through the structure, and the locking is carried out through the first nut.

Preferably, the side wall of the second winding post 3 is connected with the hook of the tension meter 12 through the hanging ring 11, the other end of the tension meter 12 is connected with the push-pull screw 13, the push-pull screw 13 penetrates through the side wall of the box body 1, and a second nut 17 matched with the push-pull screw 13 is arranged outside the side wall. After the winding is finished, the first nut 10 is loosened, the tension meter 12 is pulled, certain tension is applied to the second winding post, the tension can be displayed on the tension meter 12, and the tension can be adjusted by fastening the second nut 17.

Preferably, the heating device comprises a ceramic heating lamp 14, the ceramic heating lamp 14 is connected to a lamp holder 15, the lamp holder 15 is arranged on the inner side of the top of the box body 1, a temperature controller 16 is arranged on the outer side of the top of the box body 1, and the lamp holder 15 is connected with the temperature controller 16. The heating temperature is adjusted by the temperature controller 16 to simulate the working state of the optical fiber at the set temperature.

Preferably, the side of the box body 1 is hinged with a box door 18.

When the device is used, an operator opens the box door 18, winds the optical fibers on the two winding columns to form an 8 shape, and then penetrates out the two ends of the optical fibers from the through holes of the optical fibers to be connected to the PMD testing device. Then the temperature in the box body is set, the bending diameter is selected, the distance between the two winding posts is adjusted, and the tension is adjusted through the second nut.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. An optical fiber simulation PMD testing device is characterized in that: including box (1), be equipped with first wrapping post (2) and second wrapping post (3) in box (1), the one end of box (1) is equipped with two optic fibre through-holes (4), and the top of surveying in box (1) is equipped with heating device.

2. The fiber optic analog PMD testing apparatus of claim 1, wherein: and a plurality of winding grooves (5) are formed in the first winding post (2) and the second winding post (3).

3. An optical fiber PMD simulation test apparatus according to claim 2, wherein: the diameter of the winding groove (5) is gradually narrowed from bottom to top.

4. An optical fiber PMD simulation test apparatus according to any one of claims 1 to 3, wherein: the first wrapping post (2) is fixedly arranged in the box body (1), and the second wrapping post (3) slides in the sliding groove (6) and the sliding rail (7); be equipped with gag lever post (8) at the lower extreme of second wrapping post (3), the upper end is equipped with stop screw (9), and during gag lever post (8) stretched into spout (6), stop screw (9) passed the fluting of slide rail (7), and sea includes first nut (10) with stop screw (9) matched with, and first nut (10) are used for fixed second wrapping post (3).

5. The fiber-optic analog PMD testing apparatus of claim 4, wherein: the side wall of the second winding post (3) is connected with a hook of the tension meter (12) through a hanging ring (11), the other end of the tension meter (12) is connected with the push-pull screw (13), the push-pull screw (13) penetrates through the side wall of the box body (1), and a second nut (17) matched with the push-pull screw (13) is arranged outside the side wall.

6. The fiber optic analog PMD testing apparatus of claim 1, wherein: the heating device comprises a ceramic heating lamp (14), the ceramic heating lamp (14) is connected to a lamp holder (15), the lamp holder (15) is arranged on the inner side of the top of the box body (1), a temperature controller (16) is arranged on the outer side of the top of the box body (1), and the lamp holder (15) is connected with the temperature controller (16).

7. The fiber optic analog PMD testing apparatus of claim 1, wherein: the side surface of the box body (1) is also hinged with a box door (18).