Optical path coupling detection device and optical fiber communication system

Abstract

The utility model provides an optical path coupling detection device and an optical fiber communication system, the optical path coupling detection device comprises a signal generator, a change-over switch circuit, a wavelength division multiplexing optical module and an optical power detection module, the change-over switch circuit comprises a multichannel analog switch chip and a control unit; the multichannel analog switch chip is respectively connected with the signal generator, the wavelength division multiplexing optical module and the control unit, and the optical power detection module is respectively connected with the wavelength division multiplexing optical module and the control unit. Through the implementation of the utility model, the change-over switch circuit enables each optical path coupling channel to be conducted in sequence, the optical power detection unit monitors the optical power value corresponding to each channel so as to output a corresponding signal to the control unit after the optical power value meets a preset standard, and the control unit controls the corresponding switch to switch so as to enable the next channel to be conducted. Therefore, the optical path coupling efficiency and the yield can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, in particular to an optical path coupling detection device and an optical fiber communication system. Background Art

[0002] In wavelength division multiplexing (WDM) technology, to ensure the transmission efficiency and quality of optical signals in each channel, it is necessary to promptly detect and correct poor optical coupling. This can be determined by measuring the optical power corresponding to each channel. Related technologies for WDM modules typically use optical power detection to simultaneously monitor the optical power corresponding to multiple optical coupling channels or manually switch each optical coupling channel to detect the optical power corresponding to a single channel. These optical power detection methods often lack accuracy in the single-channel optical power values ​​they monitor, resulting in low optical coupling efficiency and yield, which is unfavorable for mass production. Utility Model Content

[0003] The utility model provides an optical path coupling detection device and an optical fiber communication system, aiming to solve the problems of low coupling efficiency and yield of optical path coupling channels in related technologies.

[0004] In order to solve the above technical problems, the first aspect of the present invention provides an optical path coupling detection device, including: a signal generator, a switching circuit, a wavelength division multiplexing optical module and an optical power detection module, the switching circuit including a multi-channel analog switch chip and a control unit; the multi-channel analog switch chip is respectively connected to the signal generator, the wavelength division multiplexing optical module and the control unit, and the optical power detection module is respectively connected to the wavelength division multiplexing optical module and the control unit.

[0005] Furthermore, the control unit includes a microprocessor, a first communication terminal of the microprocessor is connected to a selection terminal of the multi-channel analog switch chip, and a second communication terminal of the microprocessor is connected to the optical power detection module.

[0006] Furthermore, it also includes an optical amplifier, which is connected to the wavelength division multiplexing optical module and the control unit respectively.

[0007] Furthermore, the switching circuit further includes a power supply unit and a filter circuit, the power supply unit is connected to the multi-channel analog switch chip and the control unit respectively, and the filter circuit is connected to the power supply unit.

[0008] Furthermore, the wavelength division multiplexing optical module includes an optical transmitting module and an optical receiving module, and the optical transmitting module is connected to the optical receiving module via an optical fiber.

[0009] Furthermore, the optical power detection module is connected to the optical transmitting module and / or the optical receiving module.

[0010] Furthermore, the optical power detection module includes an optical power meter.

[0011] Furthermore, it also includes a dispersion compensator, which is connected between the wavelength division multiplexing optical module and the optical power meter.

[0012] A second aspect of the present invention provides an optical fiber communication system, comprising the optical path coupling detection device as described in the first aspect of the present invention.

[0013] From the above description, it can be seen that the utility model adds a switching switch circuit to the signal input end of the wavelength division multiplexing optical module, so that each optical path coupling channel is turned on in sequence, and the optical power value corresponding to each channel is monitored by the optical power detection unit, so that the corresponding signal is output to the control unit after the optical power value meets the preset standard. The control unit controls the corresponding switch switching according to the signal to turn on the next channel, and then repeats the optical power detection and channel switching operations until the optical power values ​​corresponding to all channels meet the standard, thereby effectively improving the optical path coupling efficiency and yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of an optical path coupling detection device according to an embodiment of the present utility model;

[0015] Figure 2 This is a circuit schematic diagram of a switching circuit according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic structural diagram of a wavelength division multiplexing optical module according to an embodiment of the present invention;

[0017] Figure 4 It is a structural schematic diagram of another optical path coupling detection device according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0019] In the related art, there is a problem of low coupling efficiency and yield of the optical path coupling channel. Therefore, an embodiment of the present utility model provides an optical path coupling detection device.

[0020] like Figure 1 The figure shows a schematic diagram of the structure of an optical path coupling detection device provided by an embodiment of the present utility model. Figure 1 The optical path coupling detection device includes: a signal generator 100, a switching circuit 200, a wavelength division multiplexing optical module 300 and an optical power detection module 400. The switching circuit 200 includes a multi-channel analog switch chip 210 and a control unit 220; the multi-channel analog switch chip 210 is respectively connected to the signal generator 100, the wavelength division multiplexing optical module 300 and the control unit 220, and the optical power detection module 400 is respectively connected to the wavelength division multiplexing optical module 300 and the control unit 220.

[0021] Specifically, in this embodiment, the optical power detection module 400 is used to measure the optical power value corresponding to each channel. The optical power detection module 400 includes an optical power meter. Other optical power measurement devices can also be selected based on specific applications and requirements, such as measurement accuracy and sensitivity, optical power wavelength range, and equipment cost. The optical power meter is connected to the wavelength division multiplexing optical module 300 via an optical connection component, and the optical power meter is electrically connected to the control unit 220. The optical connection component can be a fiber optic cable or an optical connector, and the optical connector can be an LC connector or an SC connector.

[0022] like Figure 2 The circuit diagram of a switching circuit provided by this embodiment is shown in FIG. Figure 1 and Figure 2 The input end of the multi-channel analog switch chip 210 is connected to the signal generator 100, the output end of the multi-channel analog switch chip 210 is electrically connected to the wavelength division multiplexing optical module 300, and the selection end of the multi-channel analog switch chip 210 is electrically connected to the control unit 220. The control unit 220 includes a microprocessor (MCU). A first communication end of the microprocessor is electrically connected to the selection end of the multi-channel analog switch chip 210, and a second communication end of the microprocessor is electrically connected to the optical power detection module 400. The first communication end of the microprocessor can be a PA end, and the second communication end can be a PD end. The number of PA ends corresponds to the number of selection ends S of the multi-channel analog switch chip 210. The model of the multi-channel analog switch chip 210 can be 74HC4053M, and the corresponding selection ends can be S1, S2, and S3. The corresponding PA ends can be PA1, PA2, and PA3. The control unit 220 can optionally use a microprocessor such as the STM8S003F3.

[0023] like Figure 3The figure shows a schematic diagram of the structure of a wavelength division multiplexing optical module provided in this embodiment. Figure 3 The wavelength division multiplexing optical module 300 includes an optical transmitter module 310 and an optical receiver module 320. The optical transmitter module 310 is connected to the optical receiver module 320 via an optical fiber. The optical power detection module 400 is connected to the optical transmitter module 310 and / or the optical receiver module 320.

[0024] Specifically, the wavelength division multiplexing optical module 300 in this embodiment includes an optical transmitter module 310 and an optical receiver module 320. The optical transmitter module 310 is used to convert multiple electrical signals into multiple optical signals, and the optical receiver module 320 is used to restore the multiple optical signals into multiple electrical signals. The optical power detection module 400 can be connected to both the optical transmitter module 310 and the optical receiver module 320, or to either module, for example, the optical transmitter module 310.

[0025] Also, see Figure 2 The switching circuit 200 further includes a power supply unit 230 and a filter circuit 240. The power supply unit 230 is connected to the multi-channel analog switch chip 210 and the control unit 220, respectively, and the filter circuit 240 is connected to the power supply unit 230. The filter circuit 240 includes a resistor R1 and a capacitor C1. One end of the resistor R1 and the capacitor C1 are both connected to the power supply unit 230, and the other ends of the resistor R1 and the capacitor C1 are both grounded. The power supply unit 230 is used to provide power to the switching circuit 200. The power supply unit 230 can be a power supply chip or a power interface of an external power supply. The filter circuit 240 is also connected to the path through which the power supply unit 230 supplies power to the multi-channel analog switch chip 210 and the control unit 220. The filter circuit 240 can be composed of a resistor R1 and a capacitor C1 connected in parallel, that is, the resistor R1 and the capacitor C1 are connected in parallel, and one end is connected to the output end of the power supply unit 230, and the other end is grounded. The filter circuit 240 can filter out noise and interference in the power supply to provide clean and stable direct current.

[0026] In this embodiment, the signal generator 100 serves as the signal source of the wavelength division multiplexing optical module 300. Different types of data signals can be selected as the signal source according to the requirements of different application scenarios. For example, when the data signal is an audio signal, the signal generator 100 can be a playback device. A switching circuit 200 is added between the signal generator 100 and the wavelength division multiplexing optical module 300. When the product is powered on, a single optical coupling channel is connected. For example, the first switching switch 1Y0 is turned on to connect the corresponding channel. At this time, the optical chip corresponding to the channel in the wavelength division multiplexing optical module 300 emits light. The optical power detection module 400 detects the optical power value corresponding to the channel and compares it with a set value. When the optical power value corresponding to the channel exceeds the set value, a corresponding signal is generated to the control unit 220. The control unit 220 generates a corresponding control instruction based on the signal to the multi-channel analog switch chip 210, causing it to open the first switch 1Y0 and close the next switching switch, such as 1Y1. The above optical power detection and channel switching operations are repeated in sequence until all channels meet the requirements. Therefore, this embodiment eliminates the need for manual switching of multiple channels, improves coupling detection efficiency, and can sequentially detect the coupling status of each channel, effectively improving the coupling yield rate and facilitating the improvement of product mass production efficiency.

[0027] like Figure 4 FIG2 is a schematic diagram of another optical path coupling detection device provided in this embodiment, see Figure 4 The optical path coupling detection device further includes a dispersion compensator 500, which is connected between the wavelength division multiplexing optical module 300 and the optical power meter (400).

[0028] Specifically, the dispersion compensator 500 in this embodiment can compensate for the dispersion of optical signals in optical fiber links. Dispersion can cause optical pulse broadening, thereby limiting transmission distance and data rate. Using the dispersion compensator 500 and an optical power meter, the dispersion-compensated optical power can be measured to help verify the optimal performance of the optical link. Furthermore, the dispersion compensator 500 is typically used to compensate for the dispersion of specific wavelengths. Therefore, different dispersion compensators 500 can be used to compensate for the dispersion of different wavelengths, depending on the requirements of the wavelength division multiplexing module in use.

[0029] See Figure 4 The optical path coupling detection device further includes an optical amplifier 600, which is connected to the wavelength division multiplexing optical module 300 and the control unit 220. Specifically, the optical amplifier 600 is connected to the output end of the wavelength division multiplexing optical module 300 via an optical connection component, and the optical amplifier 600 is electrically connected to the communication end of the control unit 220.

[0030] In this embodiment, if the optical power value corresponding to a single channel does not reach the set value, the optical power value can be increased by the optical amplifier 600 to compensate for the loss in the optical fiber link, and the control unit 220 can adjust the gain of the optical amplifier 600 according to the difference between the actual optical power value detected and the set value, thereby amplifying the optical signal to the required power level while ensuring that the output optical power value is within a preset range. The optical path coupling detection device provided by the embodiment of the utility model increases a switching switch at the signal input end of the wavelength division multiplexing optical module to enable a single optical path coupling channel, and monitors the optical power value corresponding to each channel through the optical power detection unit. When the optical power value meets the preset standard, the corresponding signal is output to the control unit. The control unit controls the corresponding switch switching according to the signal to enable the next channel, and then repeats the above optical power detection and channel switching operations until the optical power values ​​corresponding to all channels meet the standard, thereby effectively improving the optical path coupling efficiency and yield.

[0031] An embodiment of the present utility model further provides an optical fiber communication system, which includes the above-mentioned optical path coupling detection device.

[0032] It should be noted that the various embodiments in the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

[0033] It should also be noted that, in the present invention, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0034] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to be applied in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. An optical path coupling detection device, characterized in that: include: A signal generator, a switching switch circuit, a wavelength division multiplexing optical module and an optical power detection module, wherein the switching switch circuit includes a multi-channel analog switch chip and a control unit; the multi-channel analog switch chip is respectively connected to the signal generator, the wavelength division multiplexing optical module and the control unit, and the optical power detection module is respectively connected to the wavelength division multiplexing optical module and the control unit.

2. The optical path coupling detection device according to claim 1, characterized in that: The control unit comprises a microprocessor, a first communication terminal of the microprocessor is connected to a selection terminal of the multi-channel analog switch chip, and a second communication terminal of the microprocessor is connected to the optical power detection module.

3. The optical path coupling detection device according to claim 1, characterized in that: It also includes an optical amplifier, which is connected to the wavelength division multiplexing optical module and the control unit respectively.

4. The optical path coupling detection device according to claim 1, characterized in that: The switching circuit further includes a power supply unit and a filter circuit. The power supply unit is connected to the multi-channel analog switch chip and the control unit respectively, and the filter circuit is connected to the power supply unit.

5. The optical path coupling detection device according to claim 4, characterized in that: The filter circuit includes a resistor and a capacitor, one end of the resistor and the capacitor are both connected to the power supply unit, and the other ends of the resistor and the capacitor are both grounded.

6. The optical path coupling detection device according to claim 1, characterized in that: The wavelength division multiplexing optical module includes an optical transmitting module and an optical receiving module, and the optical transmitting module is connected to the optical receiving module via an optical fiber.

7. The optical path coupling detection device according to claim 6, characterized in that: The optical power detection module is connected to the optical transmitting module and / or the optical receiving module.

8. The optical path coupling detection device according to any one of claims 1 to 7, characterized in that: The optical power detection module includes an optical power meter.

9. The optical path coupling detection device according to claim 8, characterized in that: It also includes a dispersion compensator, which is connected between the wavelength division multiplexing optical module and the optical power meter.

10. An optical fiber communication system, characterized in that: It comprises the optical path coupling detection device as described in any one of claims 1 to 9.

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