Optical fiber ring type polarization controller

Abstract

The utility model relates to the technical field of optical fiber polarization control, and discloses an optical fiber ring-type polarization controller, which comprises a support column and an optical fiber winding frame rotatably arranged on the support column, a rotating shaft of the optical fiber winding frame extends along the length direction of the optical fiber ring-type polarization controller, and is characterized in that a motor is arranged on the support column, and is used for driving the optical fiber winding frame to rotate along the length direction of the optical fiber ring-type polarization controller; a motor shaft; the axis direction of the motor shaft extends in the length direction, and a fiber passing hole penetrating through the motor shaft in the length direction is formed in the motor shaft; and the fiber passing hole is aligned with a rotating shaft of the optical fiber winding frame. According to the electric polarization controller, the problem that optical fibers are led out complexly in a traditional electric polarization controller is solved, the width size of a product is greatly reduced, meanwhile, the optical fiber winding frame is tightly combined with the supporting column and the motor through the first lap joint part and the second lap joint part, the overall structure is simple and compact, the occupied space is small, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber polarization control, in particular to an optical fiber ring polarization controller. Background Art

[0002] When polarized light propagates through a birefringent medium, the different propagation speeds of the o- and e-lights cause one ray to be phase-delayed relative to the other, thus changing the polarization state of the light. Optical polarization controllers are developed based on this theory.

[0003] Types of optical polarization controllers include wave plate polarization controllers, fiber ring polarization controllers, electro-optic polarization controllers, and calorimetric polarization controllers.

[0004] Optical polarization controllers are widely used in polarization characteristic analysis of optical signals, measurement of polarization characteristics of optical devices such as couplers, isolators, wavelength division multiplexers, amplifiers, attenuators, and analysis of the impact of polarization characteristics on optical material performance.

[0005] Fiber-optic ring polarization controllers are mostly manual paddle-type polarization controllers, which are inconvenient to operate. The motors of electric polarization controllers take up a lot of space, making it difficult to miniaturize the entire device. Utility Model Content

[0006] In order to make up for the above shortcomings, the present invention provides a fiber optic ring polarization controller, which aims to improve the problems of traditional fiber optic ring polarization controllers that are inconvenient to operate, occupy a large space, and are difficult to miniaturize as a whole.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an optical fiber ring polarization controller, comprising a base and an optical fiber winding frame rotatably mounted on the base, wherein the rotation axis of the optical fiber winding frame extends along the length direction of the optical fiber ring polarization controller.

[0008] The motor is mounted on the base and has a motor shaft.

[0009] The axis direction of the motor shaft extends along the length direction, and the motor shaft is provided with a fiber hole which passes through the motor shaft along the length direction.

[0010] The fiber hole is aligned with the rotation axis of the optical fiber winding frame.

[0011] Furthermore, a support and a motor support for fixing the motor are fixed on the base. A first overlap portion and a second overlap portion are respectively provided on both sides of the optical fiber winding frame along the length direction. The first overlap portion is rotatably supported on the support, and the second overlap portion is fixed to the corresponding motor shaft.

[0012] Furthermore, the optical fiber winding frame includes a bracket and a cover body, and the bracket is provided with a fiber winding groove, which is convenient for winding the optical fiber and replacing the optical fiber.

[0013] Furthermore, the fiber winding groove includes an annular groove and a tangential groove, and the fiber hole is aligned with the tangential groove, so as to facilitate smooth winding of the optical fiber on the bracket and improve the fiber winding efficiency.

[0014] Furthermore, a supporting portion is provided on a side of the motor facing away from the corresponding optical fiber winding frame, and the supporting portion is fixed on the corresponding support, thereby improving the installation stability of the motor.

[0015] Furthermore, the outer diameter of the supporting portion is larger than the outer diameter of the first overlapping portion. When the pressing arm fixes the supporting portion, the first overlapping portion is allowed to rotate freely, thereby reducing the driving resistance of the motor.

[0016] The motor is provided with a stator and a rotor inside, and the motor shaft is fixed on the rotor.

[0017] Furthermore, the outer diameter of the supporting portion is equal to the outer diameter of the first overlapping portion. The pressing arm can contact the first overlapping portion and the supporting portion at the same time, so that the pressing arm can apply a predetermined damping to the first overlapping portion. After the motor is powered off, the optical fiber winding frame can still stay in the original position.

[0018] Furthermore, an adapter plate is fixed beside the pillar, and a clamping hole for fixing the optical fiber sheath is provided on the adapter plate.

[0019] The utility model has the following beneficial effects:

[0020] 1. This utility model utilizes a design where the motor shaft passes through the optical fiber, aligning the optical fiber path directly with the fiber winding frame. This avoids the complex fiber routing issues associated with traditional motorized polarization controllers, significantly reducing the product's width. Furthermore, the fiber winding frame is tightly integrated with the support and motor via first and second lap joints, resulting in a simple and compact overall structure that occupies minimal space. This facilitates device miniaturization, saves manufacturing materials, and reduces production costs.

[0021] 2. In this utility model, an annular groove 13 and a tangential groove 12 are provided on the optical fiber winding frame, which cooperate with the fiber hole of the motor shaft to allow the optical fiber to pass through and be wound smoothly, simplifying the installation and adjustment process of the optical fiber. The connection formed between the equipped pressure arm and the support portion provides stability, ensuring that the optical fiber winding frame can still maintain its position even when the motor is powered off. The overall design makes the installation, adjustment and operation of the optical fiber more convenient, greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the optical fiber ring polarization controller proposed in the present invention;

[0023] Figure 2This is a schematic diagram of the structure of the upper part of the substrate of the optical fiber ring polarization controller proposed in the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the optical fiber winding frame of the optical fiber ring polarization controller proposed in the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the motor of the optical fiber ring polarization controller proposed in the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figures 1 to 4 The present invention provides an embodiment of a fiber optic ring polarization controller, comprising a base 100 and a fiber optic winding frame 7 rotatably mounted on the base 100. The rotation axis of the fiber optic winding frame 7 extends along the longitudinal direction 01 of the fiber optic ring polarization controller. This makes the rotational motion of the fiber optic winding frame 7 more stable while ensuring efficient operation along the longitudinal direction.

[0028] The motor 3 is mounted on the base 100 and has a motor shaft 4. The motor 3 serves as a driving device and is directly connected to the optical fiber winding frame 7 via the motor shaft 4 to achieve efficient driving of the optical fiber winding frame 7.

[0029] The motor shaft 4 extends along its longitudinal direction O1 and is provided with a fiber hole 16 extending through the motor shaft 4 along its longitudinal direction O1. Fiber hole 16 provides a path for the optical fiber to pass through the interior of the motor 3, simplifying the installation process and avoiding the complex fiber extraction issues encountered in conventional structures.

[0030] The fiber hole 16 is aligned with the rotation axis of the optical fiber winding frame 7. This ensures a smooth transition of the optical fiber from the motor 3 to the optical fiber winding frame 7, while reducing signal loss caused by optical fiber bending.

[0031] Preferably, a support column 1 and a motor support 2 for securing a motor 3 are secured to the base 100. A first lap joint 701 and a second lap joint 702 are provided on either side of the fiber winding frame 7 along its length. The first lap joint 701 is rotatably supported on the support column 1, enabling smooth rotation of the fiber winding frame 7. The second lap joint 702 is secured to the corresponding motor shaft 4, ensuring efficient transmission of the driving force from the motor 3.

[0032] Preferably, the optical fiber winding frame 7 includes a bracket 8 and a cover 9, and the bracket 8 is provided with a fiber winding groove, which is convenient for winding the optical fiber and replacing the optical fiber, making the operation of the optical fiber more convenient and facilitating the user to quickly replace or adjust the optical fiber.

[0033] Preferably, the fiber winding groove includes an annular groove 13 and a tangential groove 12, and the fiber hole 16 is aligned with the tangential groove 12. This effectively improves the fiber winding efficiency, reduces fiber slippage and misalignment during operation, facilitates smooth fiber winding on the bracket 8, and improves fiber winding efficiency.

[0034] A supporting portion 5 is provided on a side of the motor 3 facing away from the corresponding optical fiber winding frame 7 , and the supporting portion 5 is fixed on the corresponding support 1 .

[0035] Preferably, the outer diameter of the supporting portion 5 is larger than the outer diameter of the first overlapping portion 701. When the pressing arm 6 fixes the supporting portion 5, the first overlapping portion 701 is allowed to rotate freely, reducing the resistance of the motor 3 driving the optical fiber winding frame 7 and further improving the operating efficiency of the device.

[0036] A stator 14 and a rotor 15 are provided inside the motor 3 , and the motor shaft 4 is fixed to the rotor.

[0037] Preferably, the outer diameter of the supporting portion 5 is equal to the outer diameter of the connecting portion 17. The pressing arm 6 can contact the first overlapping portion 701 and the supporting portion 5 at the same time, so that the pressing arm 6 can apply a predetermined damping to the first overlapping portion 701. After the motor 3 is powered off, the optical fiber winding frame 7 can still stay in its original position.

[0038] Preferably, an adapter plate 11 is fixed beside the pillar 1 , and a clamping hole 10 for fixing the optical fiber sheath is provided on the adapter plate 11 .

[0039] Working principle: When the fiber annular polarization controller is needed: the fiber winding frame 7 is driven to rotate by the motor 3 to change the bending state of the optical fiber, thereby controlling the polarization of the light. The fiber winding frame 7 is connected to the pillar 1 through the first overlap 701 and can rotate freely. At the same time, it is connected to the motor shaft 4 through the second overlap 702 and is directly driven by the motor 3. The optical fiber passes through the through-type fiber hole 16 inside the motor shaft 4, smoothly passes through the motor 3, and enters the fiber winding frame 7. Since the tangential groove 12 is aligned with the fiber hole 16, the optical fiber can be wound through the annular groove 13 and the tangential groove 12 inside the fiber winding frame 7, which facilitates the winding and fixation of the optical fiber. In order to make the fiber winding frame 7 more stable during adjustment, the device is designed with a pressure arm 6, a first overlap 701 and a supporting part 5. The pressure arm 6 provides a predetermined damping force for the first overlap 701. Even if the motor 3 is powered off, the fiber winding frame 7 can remain in its original position. In addition, there is an adapter plate 11 next to the pillar 1 with a clamping hole 10 for fixing the sheath of the optical fiber to prevent damage to the optical fiber. The design structure is compact and easy to use, solving the problems of large size and inconvenient operation of traditional polarization controllers. It is particularly suitable for use in optical signal analysis and performance measurement of various optical devices.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical fiber ring polarization controller, comprising a base (100) and an optical fiber winding frame (7) rotatably mounted on the base (100), wherein the rotation axis of the optical fiber winding frame (7) extends along the length direction (01) of the optical fiber ring polarization controller, characterized in that: A motor (3) mounted on the base (100) and having a motor shaft (4); The axis direction of the motor shaft (4) extends along the length direction (01), and the motor shaft (4) is provided with a fiber hole (16) that passes through the motor shaft (4) along the length direction (01); The fiber hole (16) is aligned with the rotation axis of the optical fiber winding frame (7).

2. The optical fiber ring polarization controller according to claim 1, wherein: A support column (1) and a motor support (2) for fixing the motor (3) are fixed on the base (100); The optical fiber winding frame (7) is provided with a first overlapping portion (701) and a second overlapping portion (702) on both sides along the length direction, respectively; the first overlapping portion (701) is rotatably supported on the support (1), and the second overlapping portion (702) is fixed on the corresponding motor shaft (4).

3. The optical fiber ring polarization controller according to claim 2, wherein: The optical fiber winding frame (7) comprises a bracket (8) and a cover body (9), and the bracket (8) is provided with a fiber winding groove.

4. The optical fiber ring polarization controller according to claim 3, wherein: The fiber winding groove comprises an annular groove (13) and a tangential groove (12), and the fiber passing hole (16) is aligned with the tangential groove (12).

5. The optical fiber ring polarization controller according to claim 2, wherein: A supporting portion (5) is provided on the side of the motor (3) facing away from the corresponding optical fiber winding frame (7), and the supporting portion (5) is fixed on the corresponding pillar (1).

6. The optical fiber ring polarization controller according to claim 5, characterized in that: The outer diameter of the supporting portion is greater than the outer diameter of the first overlapping portion (701).

7. The optical fiber ring polarization controller according to claim 6, characterized in that: The outer diameter of the supporting portion is equal to the outer diameter of the first overlapping portion (701).

8. The optical fiber ring polarization controller according to claim 7, wherein: An adapter plate (11) is fixed beside the pillar (1), and a clamping hole (10) for fixing the optical fiber sheath is provided on the adapter plate (11).

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