Strain and temperature coefficient calibration device for optical fiber

Abstract

The utility model belongs to the technical field of optical fiber testing, and particularly relates to a strain and temperature coefficient calibration device for an optical fiber, which comprises a water tank, a fixed optical fiber fixing component and a sliding optical fiber fixing component, and the fixed optical fiber fixing component and the sliding optical fiber fixing component are arranged on two sides of the water tank. The fixed optical fiber fixing assembly and the sliding optical fiber fixing assembly are both arranged in the water tank, and the sliding optical fiber fixing assembly is in sliding connection to enable the sliding optical fiber fixing assembly to slide in a reciprocating mode so as to change the distance between the sliding optical fiber fixing assembly and the fixed optical fiber fixing assembly. According to the utility model, the optical fiber is fixed in the water tank for testing, any hidden danger of water leakage is avoided, in addition, the water tank, the water temperature control assembly and the reciprocating driving assembly are all integrated on the rack, the integral integration is good, the use and operation are convenient, and the test efficiency is improved. And the rack is moved through the walking wheels, so that the operation is very convenient.

Description

Technical Field

[0001] This invention belongs to the field of optical fiber testing technology, and specifically relates to a device for calibrating the strain and temperature coefficient of optical fibers. Background Technology

[0002] Before conducting distributed optical fiber field monitoring tests, the test personnel need to calibrate the strain and temperature coefficient of the optical fiber used, including measuring the effect of strain on Brillouin frequency shift of bare fiber and sheathed fiber; and the effect of ambient temperature of the sheathed fiber on Brillouin frequency shift under different temperature conditions.

[0003] Currently, there are related devices for this test in the existing technology, such as the strain coefficient calibration device and method of fully distributed optical fiber at different temperatures disclosed in patent CN108180854B. However, it has some drawbacks. First, since the two ends of the optical fiber pass through the water tank from both sides, there is a risk of water leakage. Even if the hole plug is set, water will still leak due to deformation during the stretching process. Moreover, there is a risk of water leakage after long-term use. In addition, the optical fiber is very thin, and the process of passing the optical fiber through is not easy to operate. Furthermore, the overall integrity (overall integration) of the device needs to be improved, and it is not convenient to move. Utility Model Content

[0004] This invention provides a device for calibrating the strain and temperature coefficient of optical fibers, which can solve the problems pointed out in the background art.

[0005] A strain and temperature coefficient calibration device for optical fibers includes a water tank and fixed and sliding optical fiber fixing components on both sides. The water temperature of the water tank is controlled by a water temperature control component. Both the fixed and sliding optical fiber fixing components are disposed in the water tank. The sliding optical fiber fixing components are slidably connected so that they can slide back and forth to change the distance between them and the fixed optical fiber fixing components. The sliding optical fiber fixing components are driven to slide back and forth by a reciprocating drive component.

[0006] Preferably, the fixed fiber optic fixing assembly includes a fixing plate, which is fixed to the partition of the water tank, and the fixing plate is provided with at least one first fiber optic fixing clip. The sliding fiber optic fixing assembly includes a sliding plate, which is slidably connected to the water tank, and the sliding plate is provided with at least one second fiber optic fixing clip.

[0007] Preferably, the reciprocating drive assembly includes a lead screw and a drive mechanism for driving the lead screw to rotate. The lead screw is rotatably connected to the frame, and the sliding plate extends outward from the water tank and is connected to the lead screw's sleeve, thereby driving its reciprocating motion through the sleeve.

[0008] Preferably, the drive mechanism includes a drive motor and a transmission chain. The drive motor is fixed on the frame and drives the lead screw to rotate through the transmission chain.

[0009] Preferably, the frame is provided with wheels.

[0010] Preferably, the water temperature control component is an air conditioning heat exchange component, which includes an outdoor air conditioning unit, pipes, an expansion valve, and an evaporator. The outdoor air conditioning unit is fixed on the frame, and the evaporator is built into the water tank.

[0011] Beneficial effects: This utility model provides a strain and temperature coefficient calibration device for optical fibers. The optical fiber is fixed in a water tank for testing, and there is no risk of water leakage. In addition, the water tank, water temperature control components and reciprocating drive components are all integrated into the frame, which has good overall integration, is easy to use and operate, and the frame can be moved by wheels, which is very convenient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a top view of the present invention.

[0014] Explanation of reference numerals in the attached figures:

[0015] The following are labeled in the diagram: Water tank 1; partition 11; fixing plate 21; first fiber optic fixing clip 22; sliding plate 31; second fiber optic fixing clip 32; lead screw 41; drive motor 42; transmission chain 43; frame 5; outdoor air conditioning unit 61; evaporator 62; wheels 7; controller 8. Detailed Implementation

[0016] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0017] Example 1:

[0018] like Figure 1-2As shown in the figure, the present invention provides a strain and temperature coefficient calibration device for optical fibers, including a water tank 1 and fixed optical fiber fixing components and sliding optical fiber fixing components on both sides. The water tank 1 is temperature controlled by a water temperature control component and is equipped with a thermometer for water temperature display. Both the fixed optical fiber fixing components and the sliding optical fiber fixing components are disposed in the water tank 1. The sliding optical fiber fixing components are slidably connected so that they can slide back and forth to change the distance between them and the fixed optical fiber fixing components. The sliding optical fiber fixing components are driven to slide back and forth by a reciprocating drive component. The device is controlled by a controller 8, which can be designed based on a PLC.

[0019] Specifically, the fixed fiber optic fixing assembly includes a fixing plate 21, which is fixed on the partition 11 of the water tank 1. The partition 11 is a perforated partition. The fixing plate 21 is provided with at least one first fiber optic fixing clip 22. The sliding fiber optic fixing assembly includes a sliding plate 31, which can be slidably connected to the water tank 1 via a slide rail. The sliding plate 31 is provided with at least one second fiber optic fixing clip 32.

[0020] Specifically, the reciprocating drive assembly includes a lead screw 41 and a drive mechanism for driving the lead screw 41 to rotate. The lead screw 41 is rotatably connected to the frame 5. The sliding plate 31 extends outward from the water tank 1 and is connected to the lead screw 41 through the lead screw sleeve, which drives the lead screw 41 to reciprocate. The drive mechanism includes a drive motor 42 and a transmission chain 43. The drive motor 42 is fixed on the frame 5 and drives the lead screw 41 to rotate through the transmission chain 43.

[0021] In some embodiments, the frame 5 is provided with wheels 7 underneath.

[0022] Example 21:

[0023] The water temperature control component is an air conditioning heat exchange component, which includes an outdoor air conditioning unit 61, pipes, an expansion valve, and an evaporator 62. The outdoor air conditioning unit 61 is fixed on the frame 5, and the evaporator 62 is built into the water tank 1.

[0024] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A strain and temperature coefficient calibration device for optical fiber, comprising a water tank (1) and fixed optical fiber fixing assembly and sliding optical fiber fixing assembly on both sides, the water tank (1) is controlled by water temperature control assembly, characterized in that: The fixed optical fiber fixing assembly and the sliding optical fiber fixing assembly are arranged in the sink (1), the sliding optical fiber fixing assembly is connected in a sliding mode so as to reciprocally slide to change the distance with the fixed optical fiber fixing assembly, and the sliding optical fiber fixing assembly is driven to reciprocally slide by a reciprocating driving assembly.

2. A device for strain and temperature coefficient calibration of an optical fiber according to claim 1, characterized in that: The fixed optical fiber fixing assembly comprises a fixed plate (21) fixed on the partition plate (11) of the sink (1), and at least one first optical fiber fixing clamp (22) is arranged on the fixed plate (21); the sliding optical fiber fixing assembly comprises a sliding plate (31) connected in a sliding mode on the sink (1), and at least one second optical fiber fixing clamp (32) is arranged on the sliding plate (31).

3. A device for strain and temperature coefficient calibration of an optical fiber according to claim 2, characterized in that: The reciprocating driving assembly comprises a lead screw (41) and a driving mechanism for driving the lead screw (41) to rotate, the lead screw (41) is connected in a rotating mode on a rack (5), the sliding plate (31) extends out of the sink (1) and is connected with a lead screw sleeve of the lead screw (41), and the sliding plate (31) is driven to reciprocally move by the lead screw sleeve.

4. A device for strain and temperature coefficient calibration of an optical fiber according to claim 3, characterized in that: The driving mechanism comprises a driving motor (42) and a transmission chain (43), the driving motor (42) is fixed on the rack (5), and the transmission chain (43) is used to drive the lead screw (41) to rotate.

5. A device for strain and temperature coefficient calibration of an optical fiber according to claim 4, characterized in that: Walking wheels (7) are arranged below the rack (5).

6. A device for strain and temperature coefficient calibration of an optical fiber according to any one of claims 3-5, characterized in that: The water temperature control assembly is an air conditioner heat exchange assembly, the air conditioner heat exchange assembly comprises an air conditioner outdoor unit (61), a pipeline, an expansion valve and an evaporator (62), the air conditioner outdoor unit (61) is fixed on the rack (5), and the evaporator (62) is arranged in the sink (1).

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