Rotary optical fiber clamp and optical fiber system

Abstract

The utility model discloses a rotary optical fiber clamp and an optical fiber system. The rotary optical fiber clamp comprises a fixed base, a first rotary adjusting assembly and a second rotary adjusting assembly. When the technical scheme is implemented, firstly, the knob, the worm, the worm gear and the clamping component are sequentially connected to form a high-reduction-ratio transmission structure, so that high-precision coaxial rotation control of the optical fiber is realized, and the rotation stability and the alignment precision are improved; the optical fiber is adjusted in the vertical direction through the first rotation adjusting assembly, so that the end face of the optical fiber can be conveniently focused and positioned under a microscopic system; meanwhile, the clamping component can stably clamp different types of optical fibers, is particularly suitable for axis alignment and rotation control of multi-core optical fibers, is compact in structure, easy and convenient to operate and easy to integrate, and can remarkably improve the assembly efficiency and the machining consistency in the high-precision optical machining field such as two-photon printing.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber technology, and in particular to a rotating optical fiber clamp and optical fiber system. Background Technology

[0002] Optical fiber, as a high-precision transmission medium, is widely used in communications, sensing, medical applications, and laser processing. In these applications, the spatial positioning and angle control accuracy of the fiber end face directly affects system performance. This is especially true in fields such as two-photon laser printing and nano-optical processing, where precise coaxial clamping and high-precision rotational adjustment of the fiber are often required.

[0003] Common fiber optic clamping structures in related technologies mainly include mechanical clamping, magnetic clamping, vacuum adsorption, and heat shrink tubing. Among them, mechanical fiber optic clamps are widely used in laboratories and industrial fields due to their simple structure and convenient operation. However, existing fiber optic clamps have significant technical bottlenecks in the following aspects, especially in the precision processing of multi-core fibers: Insufficient adjustment accuracy: Existing clamps mostly use manual adjustment mechanisms, lacking precise fine-tuning functions. The rotating structure usually uses low-precision bearings or coarse gears, which are prone to gap accumulation, leading to rotation angle deviations and making it difficult to maintain the accuracy of repeated processing; Poor compatibility with multi-core fibers: Mainstream clamping structures often only support the clamping of single-core fibers, with weak clamping and coaxial adjustment capabilities for multi-core fiber structures. It is difficult to ensure inter-core coaxiality and optical path matching, especially in structures with precise core spacing, which are prone to problems such as unstable clamping, eccentricity, and vibration; Lack of high-precision rotation adjustment. Capabilities: Most traditional fixtures are fixed or only have limited angle rotation functions, and the rotation adjustment structure generally has a low transmission ratio (e.g., 1:1), which cannot achieve precise angle control and is difficult to meet the requirements of high-precision control of laser incident direction in processes such as two-photon printing; Complex operation and poor integration: High-precision fixtures are often complex in design, large in size, have many parts, and have cumbersome adjustment processes. Operators need to perform multiple steps of mechanical locking and angle calibration, which not only affects experimental efficiency but also limits their integrated application in compact optical platforms; Lack of modularity and ease of maintenance: Most fixture designs lack a modular approach. Once damaged or the clamping module needs to be replaced, the entire unit needs to be disassembled or readjusted, increasing the cost of use and maintenance.

[0004] In summary, most fiber optic clamps cannot simultaneously meet multiple requirements such as high-precision rotation control, multi-core coaxial alignment, vertical fine-tuning, and optical path integration without sacrificing clamping stability and structural compactness. This limitation is even more pronounced in scenarios like two-photon laser processing, which have extremely high requirements for spatial positioning and angle control. Utility Model Content

[0005] The main objective of this invention is to provide a rotating fiber optic clamp and fiber optic system, so as to at least solve the technical problem of insufficient rotational control accuracy of related clamps for optical fibers in the related art.

[0006] To achieve the above objectives, a first aspect of this utility model provides a rotating fiber optic clamp, the rotating fiber optic clamp comprising:

[0007] Fixed base;

[0008] The first rotation adjustment component is mounted on the fixed base;

[0009] The second rotation adjustment assembly is disposed on the first rotation adjustment assembly and includes a knob, a worm gear, a worm wheel and a clamping component connected in sequence, wherein the clamping component is used to clamp the optical fiber;

[0010] The first rotation adjustment component is used to adjust the height of the optical fiber relative to the fixed base;

[0011] When the knob is turned, the knob drives the worm gear to rotate, the worm gear drives the worm wheel to rotate, and the worm wheel drives the optical fiber in the clamping component to rotate coaxially.

[0012] Based on the first aspect, the clamping component includes a connecting rod and a cover plate;

[0013] The connecting rod is connected to the worm gear, and the cover plate and the connecting rod are detachably fitted and used to clamp the optical fiber;

[0014] When the worm gear rotates, it drives the connecting rod to rotate, so that the optical fiber located between the cover plate and the connecting rod rotates coaxially.

[0015] Based on the first aspect, the worm and the worm wheel form a reduction structure with a reduction ratio of 20:1;

[0016] When the knob is turned 20 times, the optical fiber rotates 1 time.

[0017] Based on the first aspect, the second rotation adjustment assembly further includes a fixing frame, a first bearing, and a second bearing;

[0018] The first bearing and the second bearing are respectively sleeved on the opposite sides of the worm and positioned between the worm and the fixed frame in the radial direction of the worm.

[0019] Based on the first aspect, the second rotation adjustment assembly further includes a third bearing and a fourth bearing;

[0020] The third bearing and the fourth bearing are respectively sleeved on the two opposite sides of the worm gear, and are located between the worm gear and the fixed frame in the radial direction of the worm gear.

[0021] Based on the first aspect, the first rotation adjustment assembly includes a differential screw, a vertical guide rail structure, and a connecting seat;

[0022] The differential screw is threadedly connected to the connecting seat, the connecting seat is fixed to the fixing frame, and can move up and down along the vertical guide rail structure on the fixing base;

[0023] When the differential screw is rotated, the connecting seat moves up and down along the vertical guide rail structure to adjust the height of the optical fiber relative to the fixed base.

[0024] Based on the first aspect, the vertical guide rail structure includes a first crossed roller and a second crossed roller;

[0025] The first crossed roller and the second crossed roller are respectively fixed to the left and right sides of the fixed base;

[0026] The connecting seat can move up and down relative to the first cross roller and the second cross roller.

[0027] Based on the first aspect, the rotating fiber optic clamp also includes a light-transmitting glass assembly;

[0028] The light-transmitting glass assembly has through holes, which are used for the optical fiber to pass through and be aligned with an external laser processing system or microscopic imaging system.

[0029] Based on the first aspect, the optical fiber includes a single-core optical fiber or a multi-core optical fiber.

[0030] A second aspect of this invention provides an optical fiber system, including an optical fiber device and a rotating optical fiber clamp as described in the first aspect, wherein the optical fiber device is used for processing or alignment operations in microscopic imaging based on the optical fiber in the rotating optical fiber clamp.

[0031] This invention relates to a rotating fiber optic clamp and fiber optic system. Firstly, by sequentially connecting a knob, worm gear, worm wheel, and clamping component to form a high-reduction-ratio transmission structure, it achieves high-precision coaxial rotation control of the fiber optic cable, improving rotational stability and alignment accuracy. Secondly, the first rotation adjustment component allows for vertical adjustment of the fiber optic cable, facilitating focusing and positioning of the fiber optic end face under a microscope. Simultaneously, the clamping component can stably hold different types of fibers, making it particularly suitable for the axial alignment and rotation control of multi-core fibers. The structure is compact, easy to operate, and readily integrated, significantly improving assembly efficiency and processing consistency in high-precision optical processing fields such as two-photon printing. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A three-dimensional schematic diagram of the rotating fiber optic clamp provided in the embodiments of this application from a first-view perspective;

[0034] Figure 2 for Figure 1 A schematic diagram of the internal structure behind the hidden fixing frame;

[0035] Figure 3 A three-dimensional schematic diagram of the rotating fiber optic clamp provided in the embodiment of this application from a second perspective;

[0036] Figure 4 A three-dimensional schematic diagram of the rotating fiber optic clamp provided in the embodiment of this application from a third-person perspective;

[0037] Figure 5 This is a three-dimensional schematic diagram of the fixed base in the embodiments of this application;

[0038] Figure 6 This is a three-dimensional schematic diagram of the fixing frame in the embodiments of this application;

[0039] Figure 7 This is a three-dimensional schematic diagram of the light-transmitting glass assembly in an embodiment of this application;

[0040] Figure 8 This is a three-dimensional schematic diagram of the connecting rod in an embodiment of this application;

[0041] Figure 9 This is a three-dimensional schematic diagram of the cover plate in an embodiment of this application.

[0042] Reference numerals: Rotating fiber optic clamp 1, Fixed base 10, First rotation adjustment component 20, Second rotation adjustment component 30, Light-transmitting glass component 40, Base plate base 102, Straight plate base 101, Differential screw 201, Vertical guide rail structure 202, Connecting seat 203, First crossed roller 2021, Second crossed roller 2022, Knob 301, Worm gear 302, Worm wheel 303, Clamping component 304, First bearing 305, Second bearing 306, Third bearing 307, Fourth bearing 308, Fixing frame 309, Connecting rod 3041, Cover plate 3042. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.

[0045] Please see Figures 1 to 4 This application provides a rotating fiber optic clamp 1 for high-precision clamping and coaxial rotation adjustment of optical fibers (single-core or multi-core fibers) during precision optical processing or two-photon printing.

[0046] The rotating fiber optic clamp 1 includes at least a fixed base 10, a first rotation adjustment assembly 20, and a second rotation adjustment assembly 30. The following is a detailed description of each component:

[0047] The fixed base 10 serves as the mounting support for the entire fixture, used to securely mount the fixture onto the optical platform or laser processing device. For example, the fixed base 10 may include a base plate 102 and a straight plate 101. The base plate 102 serves as the bottom support platform for the entire fixture device and can be fixed to the optical platform by screws or clips. The straight plate 101 is vertically mounted on the base plate 102 and provides a vertical support structure for the first rotation adjustment assembly 20 and the second rotation adjustment assembly 30.

[0048] The first rotation adjustment component 20 serves as the first-stage adjustment component. It is mounted on the fixed base 10 and is used to adjust the height position of the optical fiber in the Z-axis direction (the vertical direction of the clamp).

[0049] The second rotation adjustment assembly 30, as the second-stage adjustment assembly, is disposed on the first rotation adjustment assembly 20, and includes a knob 301, a worm gear 302, a worm wheel 303 and a clamping component 304 connected in sequence. The clamping component 304 is used to clamp the optical fiber (not shown in the figure).

[0050] Specifically, the second rotation adjustment component 30 forms a worm gear-worm transmission mechanism. The knob 301 is fixedly connected to the worm 302. Rotating the knob 301 drives the worm 302 to rotate. The worm 302 meshes with the worm wheel 303, which is connected to the clamping component 304, forming a high reduction ratio speed reduction transmission structure. For example, the worm 302 and the worm wheel 303 form a speed reduction structure with a reduction ratio of 20:1, meaning that when the knob 301 rotates 20 times, the optical fiber only rotates 1 time, thereby achieving high-precision angle control.

[0051] It should be noted that the specific reduction ratio is not limited to 20:1. It can also be optimized and adjusted according to the accuracy requirements, rotation angle range and operating habits in the specific application scenario. For example, it can be set to different reduction ratios such as 10:1 and 40:1 to adapt to different processing accuracy and response speed requirements, and has good adjustability and versatility.

[0052] In practical use, the operator can first clamp the optical fiber F with the clamping component 34 to ensure that the optical fiber axis coincides with the rotation axis of the fixture; then, by rotating the first rotation adjustment component 20, the height of the clamping component 304 in the Z-axis direction is adjusted so that the end face of the optical fiber is aligned with the laser focusing position; then, the knob 301 is rotated to drive the worm gear 302 and worm wheel 303 to reduce speed and achieve coaxial precision rotation of the optical fiber clamped by the clamping component 304. In other words, by combining the fixture with the optical system, dynamic angle adjustment and focusing processing operations of the optical fiber end face can be achieved.

[0053] As can be seen, the embodiments of this application firstly establish a high reduction ratio transmission structure by sequentially connecting the knob 301, worm gear 302, worm wheel 303, and clamping component 304, thereby achieving high-precision coaxial rotation control of the optical fiber and improving rotational stability and alignment accuracy. Furthermore, the first rotation adjustment component 20 enables vertical adjustment of the optical fiber, facilitating the focusing and positioning of the optical fiber end face under the microscopic system. Simultaneously, the clamping component 304 can stably clamp different types of optical fibers, making it particularly suitable for the axial alignment and rotation control of multi-core optical fibers. The structure is compact, easy to operate, and easy to integrate, significantly improving assembly efficiency and processing consistency in high-precision optical processing fields such as two-photon printing.

[0054] It should be noted here that: in subsequent optional embodiments, it may be combined with Figures 5 to 9 Please refer to the relevant materials; further details will not be provided here.

[0055] In an alternative embodiment, the clamping member 304 includes a connecting rod 3041 and a cover plate 3042.

[0056] The connecting rod 3041 is mechanically connected to the worm gear 303. The cover plate 3042 is detachably engaged with the connecting rod 3041, for example, by means of screws or buckles, to fix the optical fiber in the clamping groove of the connecting rod 3041, thereby achieving stable positioning.

[0057] In practical use, when knob 301 is rotated, knob 301 drives worm gear 302 to rotate, worm gear 302 drives worm wheel 303 to rotate, and worm wheel 303 further drives the connected connecting rod 3041 to rotate, thereby enabling the optical fiber clamped between connecting rod 3041 and cover plate 3042 to rotate coaxially around its own axis. That is, the embodiment of this application can achieve high-precision angle adjustment of the entire clamping unit through worm gear transmission while maintaining the axial alignment of the optical fiber.

[0058] In an optional embodiment of this application, the second rotation adjustment assembly 30 further includes a fixing frame 309, a first bearing 305, and a second bearing 306.

[0059] Specifically, the fixing frame 309 is used to support the various components of the second rotation adjustment assembly 30. The first bearing 305 and the second bearing 306 are respectively disposed at both ends of the worm 302 and respectively sleeved on opposite sides of the worm 302. In the axial structural arrangement, both the first bearing 305 and the second bearing 306 are located between the worm 302 and the fixing frame 309, and provide support in the radial direction of the worm 302.

[0060] With this structural configuration, the worm 302 can obtain stable radial support and low-friction rotation performance during rotation, which effectively improves the overall stability and transmission accuracy of the worm gear transmission system, reduces the risk of angular deviation caused by rotational error or structural loosening, and further ensures the coaxial rotational stability of the optical fiber.

[0061] In an optional embodiment of this application, the second rotation adjustment assembly 30 further includes a third bearing 307 and a fourth bearing 308.

[0062] Specifically, the third bearing 307 and the fourth bearing 308 are respectively sleeved on the opposite sides of the worm gear 303 and are located between the worm gear 303 and the fixed frame 309 in the radial direction of the worm gear 303, so as to provide double-sided support for the worm gear 303.

[0063] With the above structural configuration, the worm gear 303 is supported by the third bearing 307 and the fourth bearing 308 during rotation, which can effectively reduce rotational friction, prevent axial movement and radial sway, and further improve the mechanical stability and repeatability of the overall rotation system, thereby ensuring the coaxiality of the clamped optical fiber during high-speed deceleration rotation.

[0064] In an optional embodiment of this application, the first rotation adjustment assembly 20 includes a differential screw 201, a vertical guide rail structure 202, and a connecting seat 203.

[0065] The differential screw 201 is threadedly connected to the connecting seat 203, and the connecting seat 203 is fixed to the fixing frame 309 and can move up and down along the vertical guide rail structure 202 on the fixed base 10 (in the vertical direction of the clamp).

[0066] During operation, when the differential screw 201 is rotated, it drives the connecting seat 203 to move up and down along the vertical guide rail structure 202 through thread engagement. Since the connecting seat 203 is fixedly connected to the fixing frame 309, it can drive the fixing frame 309 and its upper components (connecting rods, optical fibers, etc.) to make high-precision displacement along the Z-axis (vertical direction), thereby achieving height adjustment of the clamped optical fiber.

[0067] In an optional embodiment of this application, the vertical guide rail structure 202 includes a first cross roller 2021 and a second cross roller 2022.

[0068] The first crossed roller 2021 and the second crossed roller 2022 are respectively fixedly disposed on the left and right sides of the fixed base 10, forming a pair of guide rails to provide high-rigidity guide support in the vertical direction. The connecting seat 203 is disposed between the first crossed roller 2021 and the second crossed roller 2022 and slides with them, so that the connecting seat 203 can slide up and down relative to the crossed roller guide rail structure along the Z-axis direction.

[0069] This structure provides low-friction, high-rigidity, and strong anti-eccentric load linear guidance through crossed roller guides, effectively ensuring the stability and accuracy of the connector 203 and its bearing components in the vertical direction driven by the differential screw 201, and providing a highly reliable mechanical basis for the focus adjustment and spatial positioning of the fiber end face.

[0070] In an optional embodiment of this application, the rotating fiber optic clamp 1 further includes a light-transmitting glass assembly 40.

[0071] The light-transmitting glass assembly 40 can be a light-transmitting glass plate, which is disposed on the fixing base 10 and has one or more through holes to provide a light transmission channel for the end face of the optical fiber. After the optical fiber is installed and clamped, its light-emitting end can pass through the through holes on the light-transmitting glass assembly 40 and be aligned with the optical path of the external laser processing system or microscopic imaging system.

[0072] By setting up the light-transmitting glass assembly 40, not only can stable light transmission be achieved, but a good optical fiber end face support platform can also be provided to ensure a clear and stable optical channel when performing laser focusing, alignment or imaging observation, thereby improving the overall processing accuracy and imaging consistency of the system.

[0073] Furthermore, the operation process and usage method of the rotating fiber optic clamp 1 in this application embodiment are as follows:

[0074] S1: Mounting base: Fix the base to the experimental platform through the screw holes.

[0075] S2: Assemble the slide and guide rail: Install the cross roller guide rail on the base to fix the secondary slide.

[0076] S3: Install the rotating assembly: Assemble the knob, differential screw, worm gear and worm wheel in sequence and connect them to the clamping platform.

[0077] S4: Insert optical fiber: Select a suitable clamp, insert the optical fiber and fix it, and confirm coaxial positioning.

[0078] S5: Height Adjustment: Adjust the height of the fiber end face using the guide rail fine-tuning screw.

[0079] S6: Rotation Adjustment: Rotate the knob 20 times to achieve one full rotation of the fiber end face. During the process, the angle change can be observed through CCD.

[0080] S7: Micromachining: The fixture, together with the optical platform, is aligned with the optical axis of the system for precision machining.

[0081] This application also provides an optical fiber system, including an optical fiber device and a rotating optical fiber clamp as described in the above embodiments. The optical fiber device is used for processing or alignment operations in microscopic imaging based on the optical fiber in the rotating optical fiber clamp.

[0082] The rotating fiber optic clamp and fiber optic system of this application embodiment firstly achieves high-precision coaxial rotation control of the fiber optic cable by sequentially connecting a knob, worm gear, worm wheel, and clamping component to form a high-reduction-ratio transmission structure, thereby improving rotational stability and alignment accuracy. Furthermore, the first rotation adjustment component allows for vertical adjustment of the fiber optic cable, facilitating focusing and positioning of the fiber optic end face under a microscope. Simultaneously, the clamping component can stably hold different types of fiber optic cables, making it particularly suitable for the axial alignment and rotation control of multi-core fiber optic cables. The structure is compact, easy to operate, and readily integrated, significantly improving assembly efficiency and processing consistency in high-precision optical processing fields such as two-photon printing.

[0083] In short, this fixture features coaxial rotation, precise adjustment, and a compact structure, solving problems such as insufficient adjustment accuracy, alignment difficulties, and unstable rotation in existing fixtures during single / multi-core fiber processing.

[0084] Furthermore, this application's embodiments address the shortcomings of existing technologies by employing high reduction ratio transmission, multi-core fiber coaxial alignment, and a modular stable structure, achieving the following beneficial effects: 1) Improved precision: Meeting the stringent requirements for angle and position in nanoscale processing such as two-photon printing. 2) Expanded functionality: For the first time, high-precision rotation functionality is combined with multi-core fiber clamping, filling a gap in laboratory tools. 3) Optimized efficiency: Modular quick assembly and disassembly reduces experimental preparation time.

[0085] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A rotary fiber clamp, comprising: The rotating fiber optic clamp includes: Fixed base; The first rotation adjustment component is mounted on the fixed base; The second rotation adjustment assembly is disposed on the first rotation adjustment assembly and includes a knob, a worm gear, a worm wheel and a clamping component connected in sequence, wherein the clamping component is used to clamp the optical fiber; The first rotation adjustment component is used to adjust the height of the optical fiber relative to the fixed base; When the knob is turned, the knob drives the worm gear to rotate, the worm gear drives the worm wheel to rotate, and the worm wheel drives the optical fiber in the clamping component to rotate coaxially.

2. The rotating fiber clamp of claim 1, wherein, The clamping component includes a connecting rod and a cover plate; The connecting rod is connected to the worm gear, and the cover plate and the connecting rod are detachably fitted and used to clamp the optical fiber; When the worm gear rotates, it drives the connecting rod to rotate, so that the optical fiber located between the cover plate and the connecting rod rotates coaxially.

3. The rotating fiber clamp of claim 2, wherein, The worm and the worm wheel form a reduction structure with a reduction ratio of 20:1; When the knob is turned 20 times, the optical fiber rotates 1 time.

4. The rotating fiber clamp of claim 2, wherein, The second rotation adjustment assembly also includes a fixed frame, a first bearing, and a second bearing; The first bearing and the second bearing are respectively sleeved on the opposite sides of the worm and positioned between the worm and the fixed frame in the radial direction of the worm.

5. The rotating fiber optic clamp as described in claim 4, characterized in that, The second rotation adjustment assembly also includes a third bearing and a fourth bearing; The third bearing and the fourth bearing are respectively sleeved on the two opposite sides of the worm gear, and are located between the worm gear and the fixed frame in the radial direction of the worm gear.

6. The rotating fiber optic clamp as described in claim 4, characterized in that, The first rotation adjustment assembly includes a differential screw, a vertical guide rail structure, and a connecting seat; The differential screw is threadedly connected to the connecting seat, the connecting seat is fixed to the fixing frame, and can move up and down along the vertical guide rail structure on the fixing base; When the differential screw is rotated, the connecting seat moves up and down along the vertical guide rail structure to adjust the height of the optical fiber relative to the fixed base.

7. The rotating fiber optic clamp as described in claim 6, characterized in that, The vertical guide rail structure includes a first crossed roller and a second crossed roller; The first crossed roller and the second crossed roller are respectively fixed to the left and right sides of the fixed base; The connecting seat can move up and down relative to the first cross roller and the second cross roller.

8. The rotating fiber optic clamp as described in claim 1, characterized in that, The rotating fiber optic clamp also includes a light-transmitting glass assembly; The light-transmitting glass assembly has through holes, which are used for the optical fiber to pass through and be aligned with an external laser processing system or microscopic imaging system.

9. The rotating fiber optic clamp as described in claim 1, characterized in that, The optical fiber may be a single-core optical fiber or a multi-core optical fiber.

10. An optical fiber system, characterized in that, The invention includes an optical fiber device and a rotating optical fiber clamp as described in any one of claims 1 to 9, wherein the optical fiber device is used for processing or alignment operations in microscopic imaging based on the optical fiber in the rotating optical fiber clamp.

Images