Device for testing sensitivity of optical module

Abstract

The utility model discloses a device for testing the sensitivity of an optical module, which comprises an OLT module, a wavelength divider, an optical attenuator, an ONT module and a network tester, the wavelength divider is connected with the OLT module, the OLT module is used for accessing an optical module to be tested, the optical module to be tested is provided with a transmitting optical port and a receiving optical port, and the optical attenuator is connected with the optical module to be tested. The input end and the output end of the optical attenuator are connected to the wavelength splitter, the wavelength splitter is connected to the optical module to be tested and the ONT module, the OLT module and the ONT module are connected to the network tester, and a test scheme executed by using the device is simple and easy to understand and easy to master by a user.

Description

Technical Field

[0001] The utility model relates to the technical field of optical modules, in particular to a device for optical module sensitivity testing. Background Art

[0002] In the field of optical fiber communication, optical modules are widely used in various environments. In order to ensure the performance of optical modules, some key technical indicators of optical modules must be tested and evaluated, such as light receiving sensitivity. Light receiving sensitivity refers to the minimum received optical power of the optical module under a certain rate and bit error rate.

[0003] The traditional optical module sensitivity test method requires multiple manual adjustments of test parameters, such as input optical power, optical wavelength, etc. The test process is cumbersome and complicated, requiring users to spend more time to understand, and the guidance for users needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a device for optical module sensitivity testing. The test scheme executed by the device is simple and easy to understand, and the user is easy to use.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A device for optical module sensitivity testing comprises an OLT module, a wavelength splitter, an optical attenuator, an ONT module and a network tester, wherein the wavelength splitter is connected to the OLT module, the OLT module is used to access an optical module to be tested, the optical module to be tested has a transmitting optical port and a receiving optical port, the input end and the output end of the optical attenuator are respectively connected to the two receiving optical ports of the optical module to be tested, the wavelength splitter is connected to the optical module to be tested and the ONT module, and the OLT module and the ONT module are connected to the network tester.

[0007] As a further improvement of the above solution, the wavelength splitter includes a wavelength splitter and a wavelength combiner, the wavelength splitter is used to separate optical signals of different wavelengths, and the wavelength combiner is used to couple the separated optical signals.

[0008] As a further improvement of the above solution, the ONT module includes an electrical port and an optical port, the wavelength splitter is provided with a COM1 port and a COM2 port, the COM1 port is connected to the optical module to be tested through a fiber optic jumper, and the COM2 port is connected to the optical port of the ONT module through a fiber optic jumper.

[0009] As a further improvement of the above solution, the wavelength splitter can separate the received optical signal into a 1310nm optical port and a 1490nm optical port.

[0010] As a further improvement of the above solution, the 1310nm optical port separated by the wavelength splitter COM1 port is connected to the output end of the optical attenuator, and the 1310nm optical port separated by the wavelength splitter COM2 port is connected to the input end of the optical attenuator.

[0011] As a further improvement of the above solution, the 1490nm optical port separated by the COM1 port of the wavelength splitter is connected with the 1490nm optical port separated by the COM2 port via an optical fiber jumper.

[0012] As a further improvement of the above solution, the OLT module and the ONT module are connected to the network tester via a network cable.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a device for optical module sensitivity testing. A network tester and an optical attenuator are set to cooperate with an OLT module and an ONT module to perform flow testing. The minimum power without packet loss can be tested by adjusting the optical attenuator to obtain the receiving sensitivity of the optical module. The test scheme executed by the device is simple and easy to understand, and users can easily get started. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a principle block diagram of a device for optical module sensitivity testing in the present invention;

[0017] Description of reference numerals:

[0018] 1. OLT module; 2. Optical module to be tested; 3. Wavelength divider; 4. Optical attenuator; 5. ONT module; 6. Network tester. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0022] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] Reference Figure 1 The utility model provides a device for optical module sensitivity testing, the device comprises an OLT module 1, a wavelength divider 3, an optical attenuator 4, an ONT module 5 and a network tester 6, the wavelength divider 3 is connected to the OLT module 1, the OLT module 1 is used to access the optical module 2 to be tested, the optical module 2 to be tested has a transmitting optical port and a receiving optical port, the input end and the output end of the optical attenuator 4 are respectively connected to the wavelength divider 3, the wavelength divider 3 is connected to the optical module 2 to be tested and the ONT module 5, the OLT module 1 and the ONT module 5 are connected to the network tester 6.

[0024] In this embodiment, the OLT module 1 has an optical port and an electrical port. The OLT module 1 is connected to the optical fiber network through its optical port to realize the function of converting data signals into optical signals for transmission; the OLT module 1 is connected to the network device through the electrical port to realize the data transmission function between it and the network device.

[0025] In this embodiment, the ONT module 5 is provided with an optical port and an electrical port. The ONT module 5 receives the optical signal sent by the OLT module 1 through its optical port, converts the received optical signal into an electrical signal, and then transmits the electrical signal to the network tester 6 through the electrical port.

[0026] In this embodiment, the wavelength splitter 3 includes a wavelength splitter and a wavelength combiner, wherein the wavelength splitter is used to separate optical signals of different wavelengths, and the wavelength combiner is used to couple the separated optical signals. The wavelength splitter can separate optical signals of different wavelengths, and the common wavelengths of optical signals are 1310nm and 1490nm. Specifically, the wavelength splitter 3 is provided with a COM1 port and a COM2 port, and the optical port of the ONT module 5 is connected to the COM2 port of the wavelength splitter 3 through an optical fiber, and the optical signal is separated by the wavelength splitter inside the wavelength splitter 3 to separate the 1310nm optical port and the 1490nm optical port. Among them, the 1310nm wavelength is used for data transmission in the upstream direction, that is, from the ONT module 5 to the OLT module 1 direction; the 1490nm wavelength is used for data transmission in the downstream direction, that is, from the OLT module 1 to the ONT module 5 direction. The 1310nm optical port separated by the COM1 port is connected to the output port of the optical attenuator 4, and the 1310nm optical port separated by the COM2 port is connected to the input port of the optical attenuator 4. The 1490nm optical port separated from the COM1 port and the 1490nm optical port separated from the COM2 port are directly connected via a fiber optic patch cord.

[0027] In this embodiment, the electrical ports of the OLT module 1 and the ONT module 5 are connected to a network tester 6 via a network cable.

[0028] The workflow of this utility model is as follows:

[0029] First, the optical module 2 to be tested is connected to the OLT module 1, and the optical port of the OLT module 1 is connected to the COM1 port of the wavelength splitter 3 through an optical fiber jumper to separate the optical signal. The optical signal is separated into a 1310nm optical port and a 1490nm optical port by the wavelength splitter 3, wherein the 1310nm optical port 1 is connected to the output port of the optical attenuator 4, the 1310nm optical port 2 is connected to the input port of the optical attenuator 4, the 1490nm optical port 1 and the 1490nm optical port 2 are directly connected through an optical fiber jumper, and the electrical ports of the OLT module 1 and the ONT module 5 are connected to the network tester 6 through a network cable. Then the network tester 6 is used to perform a flow test, and the received optical power of the optical module 2 to be tested in the OLT module 1 is further adjusted by adjusting the optical attenuator 4, and the minimum power without packet loss in the flow test is determined, that is, the receiving sensitivity of the optical module 2 to be tested is obtained.

[0030] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A device for optical module sensitivity testing, characterized in that: The invention comprises an OLT module, a wavelength divider, an optical attenuator, an ONT module and a network tester, wherein the wavelength divider is connected to the OLT module, the OLT module is used to access an optical module to be tested, the optical module to be tested has a transmitting optical port and a receiving optical port, the input end and the output end of the optical attenuator are connected to the wavelength divider, the wavelength divider is connected to the optical module to be tested and the ONT module, and the OLT module and the ONT module are connected to the network tester.

2. The device for optical module sensitivity testing according to claim 1, characterized in that: The wavelength splitter includes a wavelength splitter and a wavelength combiner. The wavelength splitter is used to separate optical signals of different wavelengths, and the wavelength combiner is used to couple the separated optical signals.

3. The device for optical module sensitivity testing according to claim 1, characterized in that: The ONT module includes an electrical port and an optical port, the wavelength splitter is provided with a COM1 port and a COM2 port, the COM1 port is connected to the optical module to be tested through an optical fiber jumper, and the COM2 port is connected to the optical port of the ONT module through an optical fiber jumper.

4. The device for optical module sensitivity testing according to claim 3, characterized in that: The wavelength splitter can separate the received optical signal into a 1310nm optical port and a 1490nm optical port.

5. The device for optical module sensitivity testing according to claim 4, characterized in that: The 1310 nm optical port separated by the wavelength splitter COM1 port is connected to the output end of the optical attenuator, and the 1310 nm optical port separated by the wavelength splitter COM2 port is connected to the input end of the optical attenuator.

6. The device for optical module sensitivity testing according to claim 4, characterized in that: The 1490nm optical port separated by the COM1 port of the wavelength splitter and the 1490nm optical port separated by the COM2 port are connected via an optical fiber jumper.

7. The device for optical module sensitivity testing according to claim 1, characterized in that: The OLT module and the ONT module are connected to the network tester via a network cable.

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