Wavelength division multiplexer fiber distribution debugging device

Abstract

The utility model discloses a wavelength division multiplexer fiber distribution debugging device, which comprises a light source, a light coupling frame, a clamping piece, a first optical power meter and a second optical power meter, the clamping piece is fixed on the light coupling frame and is used for clamping a double-fiber tail fiber and a lens, the double-fiber tail fiber comprises a first optical fiber and a second optical fiber, and the first optical fiber and the second optical fiber are fixed on the light coupling frame. The first optical fiber is used for being connected with the light source, the first optical power meter is arranged at the emergent end of the lens, and the second optical power meter is used for being connected with the second optical fiber. According to the scheme, the problem that the transmission center wavelength and the reflection center wavelength of the wavelength division multiplexer are inconsistent is avoided, the fiber distribution accuracy is improved, and the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication devices, in particular to a wavelength division multiplexer fiber matching and debugging device. Background Art

[0002] Dense Wavelength Division Multiplexing (DWDM) is a passive optical device in optical fiber communication that can transmit a group of optical wavelengths through a single optical fiber, thereby increasing the bandwidth of existing optical fibers. As one of the key materials in the production process of DWDM devices, the accuracy of the distance between the fiber cores of the optical fiber pigtail has a great impact on the performance of the DWDM device.

[0003] When a single DWDM device is manufactured, due to the narrow channel bandwidth, the accuracy of the center wavelength is required to be high. Usually, different devices require dual-fiber pigtails with different spacings. Therefore, the spacing of the required dual-fiber pigtails needs to be calculated before each device is assembled. The traditional method of calculating the spacing of dual-fiber pigtails is to obtain the reflected optical power of a single device through an optical fiber distance measurement device, and calculate the pigtail spacing by substituting the reflected optical power of the device into the software. However, since the transmission center wavelength and reflection center wavelength of the filter of the DWDM device are often inconsistent, the tolerance of the device itself to the transmission center wavelength is greater than the tolerance to the reflection center wavelength, so the pigtail spacing calculated by the traditional method will cause a certain proportion of device defects. As the bandwidth requirements of the device become higher and higher, this defective ratio gradually increases. In view of this, when matching DWDM fibers, the transmission center wavelength and reflection center wavelength of the device should be considered at the same time. Utility Model Content

[0004] In order to overcome the defects in the prior art, an embodiment of the utility model provides a wavelength division multiplexer fiber matching and debugging device, which collects the transmitted light power and reflected light power of the device through two optical power meters to calculate the transmission spectrum and reflection spectrum of the device, and performs fiber matching calculations based on the central wavelengths of the transmission spectrum and the reflection spectrum, thereby avoiding the problem of inconsistency between the transmission center wavelength and the reflection center wavelength of the wavelength division multiplexer, improving the accuracy of fiber matching and improving product yield.

[0005] The embodiment of the present application discloses: a wavelength division multiplexer fiber matching and debugging device, comprising: a light source, a light coupling frame, a clamping member, a first optical power meter and a second optical power meter, the clamping member is fixed on the light coupling frame for clamping a dual-fiber pigtail and a lens, the dual-fiber pigtail comprises a first optical fiber and a second optical fiber, the first optical fiber is used to be connected to the light source, the first optical power meter is arranged at the output end of the lens, and the second optical power meter is used to be connected to the second optical fiber.

[0006] Specifically, the light coupling frame is a three-dimensional adjustment frame.

[0007] Specifically, a filter film is provided on the lens.

[0008] Specifically, the clamping member includes a bracket connected to the light coupling frame, a first clamping jaw arranged on the bracket and a second clamping jaw arranged on the bracket, the first clamping jaw is used to clamp the dual-fiber pigtail, the second clamping jaw is used to clamp the lens, and the dual-fiber pigtail and the lens are coaxially arranged.

[0009] Specifically, the first optical power meter and the second optical power meter are scanning power meters.

[0010] The utility model has at least the following beneficial effects:

[0011] The first clamping jaw of the clamping member clamps the dual-fiber pigtail, and the second clamping jaw clamps the lens. The dual-fiber pigtail and the lens are coaxially arranged. The positions of the dual-fiber pigtail and the lens are adjusted by a three-dimensional adjustment frame so that the dual-fiber pigtail, the lens and the first optical power meter are located on the same straight line. The first optical fiber is connected to an adjustable light source, and the first optical power meter collects the optical power transmitted through the lens. The light reflected by the second optical fiber enters the second optical power meter. The transmission spectrum and reflection spectrum of the device are calculated by the data collected by the two optical power meters. The fiber matching calculation is performed based on the central wavelengths of the transmission spectrum and the reflection spectrum, thereby avoiding the problem of inconsistency between the transmission center wavelength and the reflection center wavelength of the wavelength division multiplexer, improving the accuracy of fiber matching, and improving the product yield.

[0012] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of a fiber matching and debugging device for a wavelength division multiplexer in an embodiment of the utility model.

[0015] The figure markings of the above drawings are: 1. light coupling frame; 2. clamping member; 21. bracket; 22. first clamping jaw; 23. second clamping jaw; 3. first optical power meter; 4. dual-fiber pigtail; 41. first optical fiber; 42. second optical fiber; 5. lens. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "fixed", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0018] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "below" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0019] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0020] In addition, the terms "first", "second", etc. are only used to distinguish in description and have no special meaning.

[0021] like Figure 1As shown, the wavelength division multiplexer fiber matching and debugging device of this embodiment mainly includes: a light source (not shown), a light coupling frame 1, a clamping member 2, a first optical power meter 3 and a second optical power meter (not shown). Among them, the clamping member 2 is fixedly connected to the light coupling frame 1, and is used to clamp the dual-fiber pigtail 4 and the lens 5. The dual-fiber pigtail 4 includes a first optical fiber 41 and a second optical fiber 42. The first optical fiber 41 is used to connect with the light source. The first optical power meter 3 is arranged at the output end of the lens 5 to receive the transmitted light of the dual-fiber pigtail 4 and calculate the transmitted light power. The second optical power meter is used to connect with the second optical fiber 42 to receive the reflected light of the dual-fiber pigtail 4 and calculate the reflected light power. The distance between the first optical power meter 3 and the lens 5 is between 2 and 3 cm.

[0022] Specifically, the light source of this embodiment is a tunable laser light source, whose wavelength range includes the DWDM operating wavelength and whose accuracy meets the DWDM device testing requirements. The first optical power meter 3 and the second optical power meter are scanning power meters with device scanning function.

[0023] With the above structure, the wavelength division multiplexer fiber matching and debugging device of this embodiment has a clamping member 2 arranged on the optical coupling frame 1 to clamp the dual-fiber pigtail 4 and the lens 5 to achieve optical path coupling, the first optical power meter 3 calculates the transmitted optical power of the dual-fiber pigtail 4, and the second optical power meter calculates the reflected optical power of the dual-fiber pigtail 4, and the bandwidth and central wavelength of the DWDM are calculated by using the data collected by the first optical power meter 3 and the second optical power meter, thereby determining the spacing between the first optical fiber 41 and the second optical fiber 42. In this way, the yield of the DWDM can be greatly improved.

[0024] Specifically, Figure 1 As shown, the coupling frame 1 of this embodiment is a three-dimensional adjustment frame, which can perform three-dimensional adjustment on the clamping member 2 and the dual-fiber pigtail 4 and lens 5 clamped therein, so that the dual-fiber pigtail 4, lens 5 and the first optical power meter 3 are located on the same straight line.

[0025] Preferably, a filter film is provided on the lens 5 .

[0026] like Figure 1 As shown, the clamping member 2 includes a bracket 21 connected to the light coupling frame 1, a first clamping jaw 22 arranged on the bracket 21, and a second clamping jaw 23 arranged on the bracket 21. The first clamping member is used to clamp the dual-fiber pigtail 4, and the second clamping jaw 23 is used to clamp the lens 5. The dual-fiber pigtail 4 and the lens 5 are coaxially arranged.

[0027] In summary, the working process of the wavelength division multiplexer fiber matching and debugging device of this embodiment is as follows: the first clamping jaw 22 of the clamping member 2 clamps the dual-fiber pigtail 4, and the second clamping jaw 23 clamps the lens 5. The dual-fiber pigtail 4 and the lens 5 are coaxially arranged, and the positions of the dual-fiber pigtail 4 and the lens 5 are adjusted by the three-dimensional adjustment frame so that the dual-fiber pigtail 4, the lens 5 and the first optical power meter 3 are located on the same straight line. The first optical fiber 41 is connected to the adjustable light source, and the first optical power meter 3 collects the optical power transmitted through the lens 5. The light reflected by the second optical fiber 42 enters the second optical power meter. The transmission spectrum and reflection spectrum of the device are calculated by the data collected by the two optical power meters, and the fiber matching calculation is performed according to the central wavelengths of the transmission spectrum and the reflection spectrum, thereby avoiding the problem of inconsistency between the transmission center wavelength and the reflection center wavelength of the wavelength division multiplexer, improving the accuracy of fiber matching, and improving the product yield.

[0028] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A wavelength division multiplexer fiber matching and debugging device, characterized in that: include: A light source, a light coupling frame, a clamp, a first optical power meter and a second optical power meter, wherein the clamp is fixed on the light coupling frame for clamping a dual-fiber pigtail and a lens, the dual-fiber pigtail includes a first optical fiber and a second optical fiber, the first optical fiber is used to connect to the light source, the first optical power meter is arranged at the output end of the lens, and the second optical power meter is used to connect to the second optical fiber.

2. The wavelength division multiplexer fiber matching and debugging device according to claim 1, characterized in that: The light coupling frame is a three-dimensional adjustment frame.

3. The wavelength division multiplexer fiber matching and debugging device according to claim 1, characterized in that: A filter film is arranged on the lens.

4. The wavelength division multiplexer fiber matching and debugging device according to claim 1, characterized in that: The clamping member includes a bracket connected to the light coupling frame, a first clamping jaw arranged on the bracket and a second clamping jaw arranged on the bracket, the first clamping jaw is used to clamp the dual-fiber pigtail, the second clamping jaw is used to clamp the lens, and the dual-fiber pigtail and the lens are coaxially arranged.

5. The wavelength division multiplexer fiber matching and debugging device according to claim 1, characterized in that: The first optical power meter and the second optical power meter are scanning power meters.

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