Ultrahigh-speed nanosecond-level high-precision wide-range optical fiber delay line

Abstract

The utility model discloses an ultra-high-speed nanosecond-level high-precision wide-range optical fiber delay line, which comprises a rectangular box, a distance adjusting mechanism and a bending adjusting mechanism, a rectangular frame is arranged on the right side of the bottom wall of the rectangular box; the distance adjusting mechanism is arranged on the left side of the bottom wall of the rectangular box; the bending adjusting mechanism comprises a roller, a U-shaped block, a guide rod, a spring and an arc-shaped top block, the guide rod is slidably connected to the interior of a sliding hole in the middle of the upper end of the rectangular frame, the U-shaped block is fixedly connected to the lower end of the guide rod, and the roller is rotatably connected to the interior of the U-shaped block through a pin shaft; the ultra-high-speed nanosecond-level high-precision wide-range optical fiber delay line has the advantages that the ultra-high-speed nanosecond-level high-precision wide-range optical fiber delay line is simple in structure and convenient to use when being used for delaying optical fibers, the optical fiber lines are difficult to break, the optical fiber delay effect is better, and the service life of the ultra-high-speed nanosecond-level high-precision wide-range optical fiber delay line is prolonged. And the fiber delay precision can be adjusted conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-high-speed nanosecond-level high-precision large-range optical fiber delay lines, and specifically relates to an ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line. Background Technique

[0002] An optical fiber delay line is a device that uses optical fiber as a transmission medium to extend the propagation time of optical signals. It is widely used in the fields of optics and communication. It can achieve a time delay effect by the relatively slow propagation speed of light in the optical fiber, and is usually used for signal synchronization and the need to precisely control the delay time;

[0003] In some existing optical fiber delay lines, the optical fiber is wound around a winding column, and then a metal block is installed on the outer side of the winding column, and a semiconductor thermoelectric cooler is attached to the outer surface of the metal block. The heat source flow direction and magnitude of the semiconductor thermoelectric cooler are controlled by voltage, and the heat is conducted through the metal block to heat or cool the optical fiber, thereby adjusting the optical fiber delay;

[0004] Some traditional optical fiber delay lines have the following problems: the winding process of the optical fiber is complex, the optical fiber is prone to breakage, the delay effect is not good, and it is not convenient to adjust the delay accuracy. Therefore, we propose an ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide an ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line, which has a simple structure, is convenient to use, the optical fiber is not easy to break, the optical fiber delay effect is better, and at the same time it is convenient to adjust the optical fiber delay accuracy, and can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line, including a rectangular box, a distance adjustment mechanism and a bend adjustment mechanism;

[0007] Rectangular box: A rectangular frame is provided on the right side of the bottom wall thereof;

[0008] Distance adjustment mechanism: It is arranged on the left side of the bottom wall of the rectangular box;

[0009] Bending adjustment mechanism: It includes a roller, a U-shaped block, a guide rod, a spring and an arc-shaped top block. A guide rod is slidably connected inside a sliding hole in the middle of the upper end of the rectangular frame. The lower end of the guide rod is fixedly connected to the U-shaped block. A roller is rotatably connected inside the U-shaped block through a pin shaft. A spring is sleeved outside the guide rod between the bottom wall of the rectangular frame and the upper surface of the U-shaped block. The upper end of the guide rod is fixedly connected to the arc-shaped top block. The upper surface of the U-shaped block is fixedly connected with symmetrically arranged sliding columns in the front and back. The sliding columns are respectively slidably connected with the sliding holes at the upper end of the rectangular frame. When delaying the optical fiber, the structure is simple and easy to use. The optical fiber line is not easily broken, and the optical fiber delay effect is better. At the same time, it is convenient to adjust the optical fiber delay accuracy.

[0010] Further, a single-chip microcomputer is provided at the left end of the upper surface of the rectangular box. The input end of the single-chip microcomputer is electrically connected to an external power supply to provide electrical connections for each electrical appliance.

[0011] Further, the distance adjustment mechanism includes a slide rail, a lead screw, a slider and a corner cube prism. A slide rail is provided on the left side of the bottom wall of the rectangular box. A lead screw is rotatably connected inside the slide rail. The upper end of the lead screw is threadedly connected to the slider. A corner cube prism is provided at the upper end of the slider, which is convenient for rectangular adjustment.

[0012] Further, the distance adjustment mechanism further includes a motor. The motor is arranged at the left end of the slide rail. The right end of the output shaft of the motor is fixedly connected to the left end of the lead screw. The input end of the motor is electrically connected to the output end of the single-chip microcomputer to provide distance adjustment drive.

[0013] Further, the bending adjustment mechanism further includes an electric push rod, a slide bar, a trapezoidal block and a guide rail. A guide rail is provided on the right end of the bottom wall of the rectangular box. A slide bar is slidably connected inside the guide rail. A trapezoidal block is provided at the upper end of the slide bar. The electric push rod is arranged on the bottom wall of the rectangular box. The telescopic end of the electric push rod is fixedly connected to the left end of the slide bar. The input end of the electric push rod is electrically connected to the output end of the single-chip microcomputer to provide bending adjustment drive.

[0014] Further, connection heads are respectively provided at the left and right ends of the rectangular box. An input optical fiber line is provided inside the left connection head, and an output optical fiber line is provided inside the right connection head, which is convenient for connection.

[0015] Further, an optical fiber transmitter is provided on the left side wall of the rectangular box. The output end of the input optical fiber line is connected to the input end of the optical fiber transmitter. A support plate is provided on the right side of the bottom wall of the rectangular box. An optical fiber receiver is provided at the upper end of the left side surface of the support plate. The output end of the optical fiber receiver is connected to the input end of the output optical fiber line. The input ends of the optical fiber transmitter and the optical fiber receiver are both electrically connected to the output end of the single-chip microcomputer to provide optical fiber line connection.

[0016] Compared with the prior art, the beneficial effects of the present utility model are: This ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line has the following advantages:

[0017] 1. First, connect the output end of the input optical fiber cable to the input end of the optical fiber transmitter and the input end of the output optical fiber cable to the input end of the optical fiber receiver through the connectors at both ends. Then, when the optical fiber delay line is in use, through the control of the single-chip microcomputer, the motor operates, the output shaft of the motor drives the lead screw to rotate, the rotation of the lead screw drives the threaded slider to move left and right in the slide rail, and the movement of the slide rail drives the corner cube mirror to move. The optical fiber transmitter emits the optical fiber signal to the corner cube mirror, and the corner cube mirror transmits the optical fiber signal to the optical fiber receiver. When the distance between the corner cube mirror and the optical fiber receiver is farther, the optical fiber delay effect is better. When delaying the optical fiber, the structure is simple, easy to use, and the optical fiber cable is not easily broken.

[0018] 2. Then, through the control of the single-chip microcomputer, the electric push rod operates, and the telescopic end of the electric push rod pushes the slide bar to move to the right inside the guide rail, which will drive the trapezoidal block to move to the right. When the trapezoidal block moves to the right, the inclined surface of the trapezoidal block contacts the outer surface of the roller. Then, when the outer surface of the roller contacts the highest point of the trapezoidal block, it will push the guide rod to move upward in the sliding hole in the middle of the upper end of the rectangular frame, which will drive the arc-shaped top block to move upward to lift the output optical fiber cable, making the output optical fiber cable form a bend, thus achieving the optical fiber delay effect. When the electric push rod operates and the telescopic end of the electric push rod contracts, the guide rod drops under the rebound of the spring, and the optical fiber will have no delay. When delaying the optical fiber, the optical fiber delay effect is better, and at the same time, it is convenient to adjust the optical fiber delay accuracy. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the present utility model;

[0020] Figure 2 It is a schematic sectional view of the structure of the present utility model;

[0021] Figure 3 It is a schematic sectional view of the front side of the present utility model;

[0022] Figure 4 It is an enlarged schematic view of part A of the present utility model.

[0023] In the figure: 1 rectangular box, 2 connector, 3 input optical fiber cable, 4 output optical fiber cable, 5 distance adjustment mechanism, 51 slide rail, 52 lead screw, 53 slider, 54 corner cube mirror, 55 motor, 6 optical fiber transmitter, 7 support plate, 8 optical fiber receiver, 9 bend adjustment mechanism, 91 electric push rod, 92 slide bar, 93 trapezoidal block, 94 roller, 95 U-shaped block, 96 guide rod, 97 spring, 98 arc-shaped top block, 99 guide rail, 10 rectangular frame, 11 single-chip microcomputer. Detailed Embodiment

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-4 , this embodiment provides a technical solution: a super-high-speed nanosecond-level high-precision large-range optical fiber delay line, including a rectangular box 1, a distance adjustment mechanism 5 and a curvature adjustment mechanism 9;

[0026] Rectangular box 1: A rectangular frame 10 is provided on the right side of the bottom wall of the rectangular box 1. A single-chip microcomputer 11 is provided at the left end of the upper surface of the rectangular box 1. The input end of the single-chip microcomputer 11 is electrically connected to an external power supply. Connecting heads 2 are respectively provided at the left and right ends of the rectangular box 1. An input optical fiber line 3 is provided inside the left connecting head 2, and an output optical fiber line 4 is provided inside the right connecting head 2. An optical fiber transmitter 6 is provided on the left side wall of the rectangular box 1. The output end of the input optical fiber line 3 is connected to the input end of the optical fiber transmitter 6. A support plate 7 is provided on the right side of the bottom wall of the rectangular box 1. The upper end of the left side surface of the support plate 7 is provided with an optical fiber receiver 8. The output end of the optical fiber receiver 8 is connected to the input end of the output optical fiber line 4. The input ends of the optical fiber transmitter 6 and the optical fiber receiver 8 are both electrically connected to the output end of the single-chip microcomputer 11;

[0027] Distance adjustment mechanism 5: It is arranged on the left side of the bottom wall of the rectangular box 1. The distance adjustment mechanism 5 includes a slide rail 51, a lead screw 52, a slider 53 and a corner cube prism 54. A slide rail 51 is provided on the left side of the bottom wall of the rectangular box 1. A lead screw 52 is rotatably connected inside the slide rail 51. The upper end of the lead screw 52 is threadedly connected to a slider 53. A corner cube prism 54 is provided at the upper end of the slider 53. The distance adjustment mechanism 5 further includes a motor 55. The motor 55 is arranged at the left end of the slide rail 51. The right end of the output shaft of the motor 55 is fixedly connected to the left end of the lead screw 52. The input end of the motor 55 is electrically connected to the output end of the single-chip microcomputer 11. First, the output end of the input optical fiber line 3 is connected to the input end of the optical fiber transmitter 6 and the input end of the output optical fiber line 4 is connected to the input end of the optical fiber receiver 8 through the connecting heads 2 at both ends. Then, when the optical fiber is delayed, when the optical fiber delay line is in use, through the control of the single-chip microcomputer 11, the motor 55 operates. The output shaft of the motor 55 drives the lead screw 52 to rotate. The rotation of the lead screw 52 will drive the threaded slider 53 to move left and right in the slide rail 51. The movement of the slide rail 51 will drive the corner cube prism 54 to move. The optical fiber transmitter 6 emits an optical fiber signal to the corner cube prism 54, and the corner cube prism 54 transmits the optical fiber signal to the optical fiber receiver 8. When the distance between the corner cube prism 54 and the optical fiber receiver 8 is farther, the optical fiber delay effect is better;

[0028] Bending adjustment mechanism 9: It includes a roller 94, a U-shaped block 95, a guide rod 96, a spring 97 and an arc-shaped top block 98. A guide rod 96 is slidably connected inside a sliding hole in the middle of the upper end of the rectangular frame 10. The lower end of the guide rod 96 is fixedly connected to a U-shaped block 95. A roller 94 is rotatably connected inside the U-shaped block 95 through a pin shaft. A spring 97 is sleeved outside the guide rod 96 between the bottom wall of the rectangular frame 10 and the upper surface of the U-shaped block 95. The upper end of the guide rod 96 is fixedly connected to an arc-shaped top block 98. Symmetrically arranged sliding columns are fixedly connected to the upper surface of the U-shaped block 95, and the sliding columns are respectively slidably connected to the sliding holes at the upper end of the rectangular frame 10. The bending adjustment mechanism 9 further includes an electric push rod 91, a slide bar 92, a trapezoidal block 93 and a guide rail 99. A guide rail 99 is provided at the right end of the bottom wall of the rectangular box 1. A slide bar 92 is slidably connected inside the guide rail 99. A trapezoidal block 93 is provided at the upper end of the slide bar 92. The electric push rod 91 is arranged on the bottom wall of the rectangular box 1, and the telescopic end of the electric push rod 91 is fixedly connected to the left end of the slide bar 92. The input end of the electric push rod 91 is electrically connected to the output end of the single-chip microcomputer 11. Then, by controlling the single-chip microcomputer 11, the electric push rod 91 operates. The telescopic end of the electric push rod 91 pushes the slide bar 92 to move rightward inside the guide rail 99, thereby driving the trapezoidal block 93 to move rightward. When the trapezoidal block 93 moves rightward, the inclined surface of the trapezoidal block 93 contacts the outer surface of the roller 94. Then, when the outer surface of the roller 94 contacts the highest point of the trapezoidal block 93, it will push the guide rod 96 to move upward inside the sliding hole in the middle of the upper end of the rectangular frame 10, thereby driving the arc-shaped top block 98 to move upward to lift the output optical fiber line 4, causing the output optical fiber line 4 to form a bend, thus achieving the optical fiber delay effect. When the electric push rod 91 operates and the telescopic end of the electric push rod 91 contracts, the guide rod 96 drops due to the spring 97's resilience, and the optical fiber will have no delay.

[0029] The working principle of a super-high-speed nanosecond-level high-precision large-range fiber optic delay line provided by the present utility model is as follows: First, the output end of the input fiber optic line 3 is connected to the input end of the fiber optic transmitter 6 through the connectors 2 at both ends, and the input end of the output fiber optic line 4 is connected to the output end of the fiber optic receiver 8. Then, when the fiber optic is delayed, during the use of the fiber optic delay line, through the control of the single-chip microcomputer 11, the motor 55 operates. The output shaft of the motor 55 drives the lead screw 52 to rotate. The rotation of the lead screw 52 drives the threaded slider 53 to move left and right within the slide rail 51. The movement of the slide rail 51 drives the corner cube prism 54 to move. The fiber optic transmitter 6 emits a fiber optic signal to the corner cube prism 54, and the corner cube prism 54 transmits the fiber optic signal to the fiber optic receiver 8. When the distance between the corner cube prism 54 and the fiber optic receiver 8 is farther, the fiber optic delay effect is better. Then, through the control of the single-chip microcomputer 11, the electric push rod 91 operates. The telescopic end of the electric push rod 91 pushes the slide bar 92 to move rightward inside the guide rail 99, and further drives the trapezoidal block 93 to move rightward. When the trapezoidal block 93 moves rightward, the inclined surface of the trapezoidal block 93 contacts the outer surface of the roller 94. Then, when the outer surface of the roller 94 contacts the highest point of the trapezoidal block 93, it pushes the guide rod 96 to move upward within the slide hole in the middle of the upper end of the rectangular frame 10, and further drives the arc-shaped top block 98 to move upward to lift the output fiber optic line 4, causing the output fiber optic line 4 to form a bend, thereby achieving the fiber optic delay effect. When the electric push rod 91 operates and the telescopic end of the electric push rod 91 contracts, the guide rod 96 drops under the rebound of the spring 97, and the fiber optic will have no delay.

[0030] It should be noted that for the motor 55, fiber optic transmitter 6, fiber optic receiver 8, and electric push rod 91 disclosed in the above embodiments, the motor 55 can be selected as 35BYJ46, the fiber optic transmitter 6 and fiber optic receiver 8 can both be selected as HFBR—2531Z, the electric push rod 91 can be selected as DKT, and the single-chip microcomputer 11 controls the operation of the motor 55, fiber optic transmitter 6, fiber optic receiver 8, and electric push rod 91 using common methods in the prior art.

[0031] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. An ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line, characterized in that: It comprises a rectangular box (1), a distance adjustment mechanism (5) and a curvature adjustment mechanism (9); Rectangular box (1): a rectangular frame (10) is provided on the right side of the bottom wall; A distance adjustment mechanism (5): which is arranged on the left side of the bottom wall of the rectangular box (1); The curvature adjustment mechanism (9) comprises a roller (94), a U-shaped block (95), a guide rod (96), a spring (97) and an arc-shaped top block (98); the guide rod (96) is slidably connected to the inside of the sliding hole in the middle of the upper end of the rectangular frame (10); the lower end of the guide rod (96) is fixedly connected to the U-shaped block (95); the inside of the U-shaped block (95) is rotatably connected to the roller (94) through a pin shaft; the outside of the guide rod (96) between the bottom wall of the rectangular frame (10) and the upper surface of the U-shaped block (95) is sleeved with a spring (97); the upper end of the guide rod (96) is fixedly connected to the arc-shaped top block (98); the upper surface of the U-shaped block (95) is fixedly connected to front and rear symmetrical sliding columns, and the sliding columns are respectively slidably connected to the sliding holes at the upper end of the rectangular frame (10).

2. The ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line according to claim 1, characterized in that: A single-chip computer (11) is provided at the left end of the upper surface of the rectangular box (1), and an input end of the single-chip computer (11) is electrically connected to an external power supply.

3. The ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line according to claim 2, characterized in that: The distance adjustment mechanism (5) comprises a slide rail (51), a screw rod (52), a slider (53) and a prism (54); the slide rail (51) is provided on the left side of the bottom wall of the rectangular box (1); the inside of the slide rail (51) is rotatably connected to the screw rod (52); the upper end of the screw rod (52) is threadedly connected to the slider (53); and the upper end of the slider (53) is provided with a prism (54).

4. The ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line according to claim 3, characterized in that: The distance adjustment mechanism (5) further comprises a motor (55), wherein the motor (55) is arranged at the left end of the slide rail (51), the right end of the output shaft of the motor (55) is fixedly connected to the left end of the screw rod (52), and the input end of the motor (55) is electrically connected to the output end of the single chip computer (11).

5. The ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line according to claim 2, characterized in that: The curvature adjustment mechanism (9) further comprises an electric push rod (91), a slide bar (92), a trapezoidal block (93) and a guide rail (99); the right end of the bottom wall of the rectangular box (1) is provided with a guide rail (99); the inside of the guide rail (99) is slidably connected with the slide bar (92); the upper end of the slide bar (92) is provided with a trapezoidal block (93); the electric push rod (91) is arranged on the bottom wall of the rectangular box (1); the telescopic end of the electric push rod (91) is fixedly connected to the left end of the slide bar (92); and the input end of the electric push rod (91) is electrically connected to the output end of the single chip computer (11).

6. The ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line according to claim 1, characterized in that: Connectors (2) are respectively provided at the left and right ends of the rectangular box (1); an input optical fiber line (3) is provided inside the left connector (2), and an output optical fiber line (4) is provided inside the right connector (2).

7. The ultra-high-speed nanosecond-level high-precision large-range optical fiber delay line according to claim 2, characterized in that: The left side wall of the rectangular box (1) is provided with an optical fiber transmitter (6), the output end of the input optical fiber line (3) is connected to the input end of the optical fiber transmitter (6), the right side of the bottom wall of the rectangular box (1) is provided with a support plate (7), the upper end of the left side surface of the support plate (7) is provided with an optical fiber receiver (8), the output end of the optical fiber receiver (8) is connected to the input end of the output optical fiber line (4), and the input ends of the optical fiber transmitter (6) and the optical fiber receiver (8) are both electrically connected to the output end of the single chip computer (11).

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