External probe type optical insertion loss instrument

Abstract

The utility model discloses an external probe type optical insertion loss instrument, which comprises a host, an optical signal interface and an optical fiber interface on the host are respectively provided with an optical fiber patch cord and an optical fiber cable, the other end of the optical fiber cable is arranged on an external probe, one end of the external probe is provided with an optical fiber clamp for clamping an optical fiber, and the other end of the external probe is provided with an optical fiber. The other end of the optical fiber jumper wire is provided with an input optical fiber, one end of the input optical fiber penetrates through the alignment frame and is connected with a tested optical splitter, a tested optical fiber is arranged in the tested optical splitter, and the other end of the tested optical fiber is arranged in an optical fiber clamp. The optical fiber clamp is formed by combining an optical fiber clamp body, a guide cover, a clamping assembly, a first bearing, an adjusting plate, a second bearing and a fixed end cover. According to the utility model, not only can optical fibers with different diameters be firmly fixed, but also accurate alignment between the optical fibers and the optical axis on the front probe can be ensured, and the accuracy of optical fiber measurement is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of optical fiber communication test technology, concretely is a kind of external probe formula optical insertion loss instrument. BACKGROUND

[0002] Optical fiber communication has signal stability, small loss, long transmission distance, capacity and other advantages, has been widely used in the modern communication network construction of each country.Currently, our country's optical fiber communication network construction is rapid, three big operators and broadcasting system have determined the thought of "speeding up the optical into copper, promote the strategic transformation of access network".Optical fiber active connector and optical fiber are the same, belong to the most basic component in optical fiber communication network, have huge demand in optical fiber communication network.The relevant competent department of state has also formulated a number of industry standards for optical fiber active connector, and specific provisions are made for its performance index.Industry standard stipulates that the optical performance inspection item of optical fiber active connector before leaving factory is insertion loss and return loss.

[0003] Through the search, patent announcement No.CN203883837U discloses a kind of optical fiber winding-free insertion loss return loss tester.It includes central processing unit, central processing unit is connected wavelength division multiplexer by light emission module, the output end of wavelength division multiplexer signal is connected optical splitter, the output end of optical splitter is connected to the front end face of the jumper wire to be measured, and the return loss signal end of optical splitter is connected return loss test module;Information transmission is carried out between return loss test module and central processing unit, still include a clock chip capable of providing time reference, clock chip is connected return loss test module and central processing unit respectively and provides reference time for them.After the structure described above, time reference can be provided by clock chip, return loss test module records returned Fresnel reflection, and return loss test module can distinguish the reflection value of different end faces by synchronization with clock chip, so as to achieve the purpose of optical fiber winding-free, convenient and reliable for testing, avoid optical fiber from being injured during testing, and greatly improve product testing efficiency.

[0004] The existing optical insertion loss instrument is inconvenient to operate in actual use, and the probe of part of insertion loss measuring instrument is designed unreasonably, and the connection and alignment with the optical fiber are complex, which requires professional personnel to spend a lot of time for operation, increases the measurement cost and time, and has poor adaptability, so that the existing equipment cannot be flexibly adapted to different types and diameters of optical fiber, a plurality of adaptive tools are required or accurate measurement cannot be achieved, and therefore an external probe type optical insertion loss instrument is designed. UTILITY MODEL CONTENTS

[0005] In view of the defects or deficiencies of optical insertion loss instrument, the utility model aims at providing an external probe type optical insertion loss instrument, which can not only firmly fix optical fibers of different diameters, but also ensure accurate alignment between the optical fiber and the optical axis on the front probe, and improve the accuracy of optical fiber measurement.

[0006] To achieve the above-mentioned utility model purposes, the utility model adopts the following technical schemes:

[0007] The utility model provides a kind of external probe formula optical insertion loss instrument, including host computer, optical signal interface and optical fiber interface on the host computer are provided with optical fiber patch cord and optical fiber cable respectively, the other end of optical fiber cable is arranged on external probe, and the one end of external probe is provided with the optical fiber clamp for clamping optical fiber, the other end of optical fiber patch cord is provided with input optical fiber, and the one end of input optical fiber penetrates alignment frame and is connected with measured optical distribution head, measured optical distribution head is provided with measured optical fiber in, and the other end of measured optical fiber is arranged in optical fiber clamp;

[0008] The optical fiber clamp is combined by optical fiber clamp, guide cover, clamping assembly, first bearing, adjusting plate, second bearing and fixed end cover, first annular connecting plate and second annular connecting plate are arranged on the clamping assembly, guide cover is installed on the end wall of one end of the first annular connecting plate, first bearing is installed on the circumferential inner wall of the other end of the first annular connecting plate, adjusting plate is installed in the first bearing, second bearing is installed on the circumferential inner wall of the other end of the adjusting plate, and fixed end cover is installed in the second bearing.

[0009] Preferably, a power plug is arranged on the side outer wall of the host computer, a display screen and control buttons are arranged on the front end wall of the host computer, and the display screen is located on one side of the control buttons.

[0010] Preferably, mounting grooves are formed on both sides of the end wall of the first annular connecting plate and the second annular connecting plate, a moving plate is arranged between the mounting groove on the first annular connecting plate and the mounting groove on the second annular connecting plate, a clamping block is installed on one end of the moving plate, a first rack is installed on the side outer wall of the moving plate, the second annular connecting plate is located on the inner side of the first annular connecting plate, and the first annular connecting plate and the second annular connecting plate are connected by a second connecting rod.

[0011] Preferably, a limiting block is arranged on the other side outer wall of the moving plate, the other end of the limiting block is arranged in a limiting groove, the limiting groove is formed on one side groove wall of the mounting groove, and the outer wall of the limiting block and the groove wall of the limiting groove are gap-fitted, and a limiting plate is arranged on one side of the top of the mounting groove.

[0012] Preferably, the guide cover is fixedly connected with the first annular connecting plate through a fastening bolt, the circumferential inner wall of the guide cover is connected with a guide sleeve through a first connecting rod, columnar gears are arranged on both sides of the side surface of the guide cover, a connecting shaft is arranged on the end wall of one end of the columnar gear, and the other end of the connecting shaft is installed in the bearing on the surface of the guide cover.

[0013] Preferably, a rotating protrusion is arranged on the circumferential outer wall of the adjusting plate, and a second gear rack is arranged on the bearing inner wall of one end of the adjusting plate.

[0014] Preferably, the cylindrical gear is in meshing connection with the first gear rack and the second gear rack.

[0015] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0016] 1. In the utility model, when the optical fiber is measured, the light source in the main machine sends the known power optical signal to the optical fiber patch cord, the optical signal is transmitted through the optical splitter and the measured optical splitter, and then is received by the external probe and transmitted back to the main machine, the main machine calculates the insertion loss value according to the sending optical power and the receiving optical power, can support the measurement of multiple wavelength optical signals, can measure the insertion loss at 1310nm, 1490nm, 1550nm, 1625nm and other commonly used optical fiber communication wavelengths and other specific wavelengths, and can select different wavelengths for measurement according to actual needs to adapt to the test requirements of different optical fiber systems.

[0017] 2. In the utility model, when the staff aligns the optical axis between the measured optical fiber and the front probe, the staff only needs to pass one end of the measured optical fiber through the guide sleeve and locate it between the adjacent clamping blocks, then rotates the rotating protrusion to drive the second gear rack to rotate, the second gear rack rotates to drive the cylindrical gear to rotate, the cylindrical gear rotates to mesh with the first gear rack to drive the moving plate to move linearly, the moving plate moves linearly to drive the clamping block to move linearly, the clamping block moves linearly to clamp the measured optical fiber, and the two clamping blocks fix and clamp one end of the measured optical fiber on the same axis as the optical axis on the front probe, so that the utility model not only can firmly fix optical fibers of different diameters, but also can ensure accurate alignment between the optical fiber and the optical axis on the front probe, and improve the accuracy of optical fiber measurement. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0019] Figure 1 It is the whole structure schematic view of the utility model.

[0020] Figure 2 It is the connecting structure schematic view between the front probe and the optical fiber clamp of the utility model.

[0021] Figure 3It is the sectional view of the optical fiber clamp.

[0022] Figure 4 It is the exploded structural schematic view of the optical fiber clamp.

[0023] Figure 5 It is the structural schematic view of the guide cover.

[0024] Figure 6 It is the structural schematic view of the adjusting plate. Figure 5

[0025] Figure 7 It is the structural schematic view of the clamping assembly.

[0026] Figure 8 It is the structural schematic view of the clamping assembly.

[0027] In the figure:

[0028] 100, main machine; 110, power plug; 120, display screen; 130, control button; 140, optical fiber patch cord; 150, optical fiber cable;

[0029] 200, alignment frame;

[0030] 300, input optical fiber;

[0031] 400, measured optical splitter;

[0032] 500, measured optical fiber;

[0033] 600, external probe;

[0034] 700, optical fiber clamp; 710, guide cover; 720, clamping assembly; 730, first bearing; 740, adjusting plate; 750, second bearing; 760, fixed end cover;

[0035] 711, cylindrical gear; 712, guide sleeve; 713, first connecting rod;

[0036] 721, mounting groove; 722, second connecting rod; 723, first annular connecting plate; 724, second annular connecting plate; 725, first rack; 726, limiting plate; 727, moving plate; 728, limiting block; 729, clamping block;

[0037] 741, rotating protrusion; 742, second rack. DETAILED DESCRIPTION

[0038] The utility model will be further described below in combination with the drawings and examples.

[0039] ​It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] like Figures 1-8 As shown, an external probe type optical insertion loss meter includes a host 100, wherein the optical signal interface and the optical fiber interface on the host 100 are respectively provided with an optical fiber jumper 140 and an optical fiber cable 150, the other end of the optical fiber cable 150 is provided on the external probe 600, and one end of the external probe 600 is provided with an optical fiber clamp 700 for clamping the optical fiber, the other end of the optical fiber jumper 140 is provided with an input optical fiber 300, and one end of the input optical fiber 300 passes through the alignment frame 200 and is connected to the optical splitter 400 to be measured, the optical splitter 400 to be measured is provided with an optical fiber 500 to be measured, and the other end of the optical fiber 500 to be measured is provided in the optical fiber clamp 700, the host 100 is further provided with a high-precision optical power detection module and a signal processing unit, the high-precision optical power detection module can accurately detect weak optical signals within a wavelength range; the signal processing unit digitally processes and analyzes the detected optical signal to calculate the insertion loss value; the display screen 120 can clearly and intuitively display the measurement results;

[0042] The optical fiber clamp 700 is composed of an optical fiber clamp 700, a guide cover 710, a clamping assembly 720, a first bearing 730, an adjustment plate 740, a second bearing 750 and a fixed end cover 760. The clamping assembly 720 is provided with a first annular connecting plate 723 and a second annular connecting plate 724. The guide cover 710 is installed on the end wall of one end of the first annular connecting plate 723, and the first bearing 730 is installed on the circumferential inner wall of the other end of the first annular connecting plate 723, and the adjustment plate 740 is installed in the first bearing 730. The second bearing 750 is installed on the circumferential inner wall of the other end of the adjustment plate 740, and the fixed end cover 760 is installed in the second bearing 750.

[0043] A power plug 110 is provided on one outer wall of the host 100 , and a display screen 120 and a control button 130 are provided on the front wall of the host 100 , and the display screen 120 is located on one side of the control button 130 .

[0044] The installation groove 721 is arranged on both sides of the end wall of the first annular connecting plate 723 and the second annular connecting plate 724, and the installation groove 721 on the first annular connecting plate 723 is arranged between the installation groove 721 on the second annular connecting plate 724, one end of the moving plate 727 is provided with a clamping block 729, the first rack 725 is arranged on one side of the outer wall of the moving plate 727, the second annular connecting plate 724 is located on the inner side of the first annular connecting plate 723, and the first annular connecting plate 723 and the second annular connecting plate 724 are connected through the second connecting rod 722.

[0045] The other side of the outer wall of the moving plate 727 is provided with a limiting block 728, the other end of the limiting block 728 is arranged in the limiting groove, the limiting groove is arranged on one side of the groove wall of the installation groove 721, and the outer wall of the limiting block 728 and the groove wall of the limiting groove are in clearance fit, and the top of the installation groove 721 is provided with a limiting plate 726, so that the movement of the moving plate 727 is limited and guided.

[0046] The guide cover 710 is fixedly connected with the first annular connecting plate 723 through a fastening bolt, the circumferential inner wall of the guide cover 710 is connected with the guide sleeve 712 through the first connecting rod 713, the guide sleeve 712 is arranged, the guide sleeve 712 can guide the measured optical fiber 500, and the measured optical fiber 500 is arranged between adjacent clamping blocks 729, the two sides of the side surface of the guide cover 710 are provided with columnar gears 711, the end wall of one end of the columnar gear 711 is provided with a connecting shaft, and the other end of the connecting shaft is arranged in the bearing on the surface of the guide cover 710.

[0047] The circumferential outer wall of the adjusting plate 740 is provided with a rotating protrusion 741, and the bearing inner wall of one end of the adjusting plate 740 is provided with a second rack 742.

[0048] The columnar gear 711 is in meshing connection with the first rack 725 and the second rack 742.

[0049] Working principle: in use, when the external power is turned on, the staff inserts one end of the measured optical fiber 500 through the guide sleeve 712 and between the adjacent clamping blocks 729, and then rotates the rotating block 741 to drive the second rack 742 to rotate, the rotation of the second rack 742 drives the cylindrical gear 711 to rotate, the rotation of the cylindrical gear 711 drives the moving plate 727 to move linearly through the meshing transmission with the first rack 725, the linear movement of the moving plate 727 drives the clamping block 729 to move linearly, the linear movement of the clamping block 729 can clamp the measured optical fiber 500, and after the two clamping blocks 729 fix and clamp one end of the measured optical fiber 500 at the same axis as the optical axis of the front probe, the measurement parameters such as wavelength and measurement mode are selected on the host computer 100, the measurement program is started, the light source in the host computer 100 sends the known power optical signal to the optical fiber jumper 140, the optical signal is transmitted through the optical splitter and the measured optical splitter 400, and then is received by the external probe 600 and transmitted back to the host computer 100, the host computer 100 calculates the insertion loss value according to the transmitted light power and the received light power, and displays the optical fiber insertion loss value on the display screen 120, if multi-wavelength measurement or real-time monitoring is required, the above steps can be repeated or the corresponding function can be started.

[0050] The preferred embodiments of the present application have been described above by way of example only, not for limitation, and various changes and modifications can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An external probe type optical insertion loss meter comprising a host computer (100), characterized by: The optical signal interface and the optical fiber interface on the host (100) are respectively provided with an optical fiber jumper (140) and an optical fiber cable (150), the other end of the optical fiber cable (150) is arranged on an external probe (600), and one end of the external probe (600) is provided with an optical fiber clamp (700) for clamping an optical fiber, the other end of the optical fiber jumper (140) is provided with an input optical fiber (300), and one end of the input optical fiber (300) penetrates through an alignment frame (200) and is connected with a measured optical splitter (400), the measured optical splitter (400) is provided with a measured optical fiber (500) therein, and the other end of the measured optical fiber (500) is arranged in the optical fiber clamp (700); The optical fiber clamp (700) is composed of an optical fiber clamp (700), a guide cover (710), a clamping assembly (720), a first bearing (730), an adjusting plate (740), a second bearing (750) and a fixed end cover (760), the clamping assembly (720) is provided with a first annular connecting plate (723) and a second annular connecting plate (724), a guide cover (710) is mounted on the end wall of one end of the first annular connecting plate (723), a first bearing (730) is mounted on the circumferential inner wall of the other end of the first annular connecting plate (723), an adjusting plate (740) is mounted in the first bearing (730), a second bearing (750) is mounted on the circumferential inner wall of the other end of the adjusting plate (740), and a fixed end cover (760) is mounted in the second bearing (750).

2. The external probe optical insertion loss meter according to claim 1, characterized in that: A power plug (110) is arranged on the side outer wall of the host (100), a display screen (120) and a control button (130) are arranged on the front end wall of the host (100), and the display screen (120) is located on one side of the control button (130).

3. The external probe optical insertion loss meter of claim 1, wherein: Mounting grooves (721) are formed on both sides of the end wall of one end of the first annular connecting plate (723) and the second annular connecting plate (724), a moving plate (727) is arranged between the mounting grooves (721) on the first annular connecting plate (723) and the second annular connecting plate (724), a clamping block (729) is mounted on one end of the moving plate (727), a first rack (725) is mounted on the side outer wall of the moving plate (727), the second annular connecting plate (724) is located on the inner side of the first annular connecting plate (723), and the first annular connecting plate (723) and the second annular connecting plate (724) are connected through a second connecting rod (722).

4. The external probe optical insertion loss meter of claim 3, wherein: A limiting block (728) is arranged on the other side outer wall of the moving plate (727), the other end of the limiting block (728) is arranged in a limiting groove, the limiting groove is formed on the one side groove wall of the mounting groove (721), and the outer wall of the limiting block (728) and the groove wall of the limiting groove are gap-fitted, and a limiting plate (726) is arranged on one side of the top of the mounting groove (721).

5. The external probe optical insertion loss meter of claim 4, wherein: The guide cover (710) is fixedly connected with the first annular connecting plate (723) through a fastening bolt, the circumferential inner wall of the guide cover (710) is connected with the guide sleeve (712) through a first connecting rod (713), both sides of the side surface of the guide cover (710) are provided with columnar gears (711), a connecting shaft is arranged on the end wall of one end of the columnar gear (711), and the other end of the connecting shaft is installed in a bearing on the surface of the guide cover (710).

6. The external probe optical insertion loss meter of claim 5, wherein: A rotating lug (741) is arranged on the circumferential outer wall of the adjusting plate (740), and a second gear rack (742) is arranged on the bearing inner wall of one end of the adjusting plate (740).

7. The external probe optical insertion loss meter of claim 6, wherein: The columnar gears (711) are in meshing connection with the first gear rack (725) and the second gear rack (742).

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