CN217824976U

CN217824976U - Photoelectric probe

Info

Publication number: CN217824976U
Application number: CN202221773910.XU
Authority: CN
Inventors: 刘锦波; 李林科; 吴天书; 杨现文; 张健
Original assignee: Wuhan Linktel Technologies Co Ltd
Current assignee: Wuhan Linktel Technologies Co Ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-15
Anticipated expiration: 2032-07-11

Abstract

The utility model discloses a photoelectric probe, including ROSA subassembly, sampling circuit and connecting wire, the power supply pin of ROSA subassembly is connected, and the power is used for supplying power for the ROSA subassembly, and the ROSA subassembly is used for the received optical signal to turn into the electric current signal with received optical signal and export from the control pin of ROSA subassembly, the control pin and the sampling circuit of ROSA subassembly are connected, sampling circuit is used for turning into the electric current signal of the control pin output of ROSA subassembly voltage signal through the connecting wire output, and the other end of connecting wire is connected with the BNC that is used for with oscilloscope's BNC interface connection and connects. The utility model adopts the above technical scheme to convert the light signal that detects into the voltage signal that oscilloscope can detect, and utilize ROSA subassembly that has photoelectric conversion and simple circuit connection to produce the photoelectric probe in this patent, and utilize common low-cost device to reach the function of traditional photoelectric probe, can not only save cost and simple manufacture greatly.

Description

Photoelectric probe

Technical Field

The utility model belongs to the technical field of the optical communication, concretely relates to photoelectric probe.

Background

With the rapid development of the optical communication industry, the development of an optical module towards the direction of small volume and high speed is promoted, the test of the optical module is gradually perfected, the time sequence test is an important part in the optical module test, and the photoelectric probe is an essential tool in the test time sequence. The conventional photoelectric probe is expensive.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a photoelectric probe, its function that utilizes common low-cost device to reach traditional photoelectric probe can not only save cost and simple manufacture greatly.

The technical scheme of the utility model is realized like this: the utility model discloses a photoelectric probe, including ROSA subassembly, sampling circuit and connecting wire, the power supply pin of ROSA subassembly is connected, and the power is used for supplying power for the ROSA subassembly, and the ROSA subassembly is used for the received optical signal to turn into the electric current signal with received optical signal and export from the control pin of ROSA subassembly, the control pin and the sampling circuit of ROSA subassembly are connected, sampling circuit is used for turning into the electric current signal of the control pin output of ROSA subassembly voltage signal through the connecting wire output, and the other end of connecting wire is connected with the BNC that is used for with oscilloscope's BNC interface connection and connects.

Further, the power supply is a direct current constant voltage source.

Furthermore, an inductor L1 for filtering alternating current is arranged between a power supply pin of the ROSA assembly and the power supply input end VCCR.

Furthermore, a power supply pin of the ROSA component is connected with one end of the second capacitor C2, the other end of the second capacitor C2 is grounded, the power input end VCCR is connected with one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.

Furthermore, the connecting wire is a BNC-to-BNC coaxial wire with only one end provided with a BNC connector, the signal wire at the end of the BNC-to-BNC coaxial wire without the BNC connector is electrically connected with the voltage output end RXPOWER of the sampling circuit, and the grounding wire at the end of the BNC-to-BNC coaxial wire without the BNC connector is grounded.

Further, the sampling circuit includes resistance R1, resistance R1's one end ground connection, resistance R1's the other end is connected with the control pin of connecting wire, ROSA subassembly respectively.

Furthermore, a power input interface is arranged on the PCB and used for being externally connected with a power supply, a monitoring pin and a power supply pin of the ROSA assembly are respectively welded and fixed with the PCB and are electrically connected with the PCB, the sampling circuit is arranged on the PCB, and the connecting wire is electrically connected with the PCB.

The utility model discloses following beneficial effect has at least: because the utility model discloses a photoelectric probe includes ROSA subassembly, sampling circuit and connecting wire, the power supply pin of ROSA subassembly is connected, and the power is used for supplying power for the ROSA subassembly, and the ROSA subassembly is used for the received optical signal to turn into the electric current signal with received optical signal and export from the control pin of ROSA subassembly, the control pin and the sampling circuit of ROSA subassembly are connected, sampling circuit is used for turning into the electric current signal of the control pin output of ROSA subassembly voltage signal through the connecting wire output, and the other end of connecting wire is connected with the BNC that is used for with the BNC interface connection of oscilloscope and connects. The above technical scheme is adopted in the utility model the light signal conversion who detects can the voltage signal that oscilloscope detected, and utilize ROSA subassembly that has photoelectric conversion and simple circuit connection to produce the photoelectric probe in this patent, and utilize common low-cost device to reach the function of traditional photoelectric probe, can not only save cost and simple manufacture greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a photoelectric probe according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a photoelectric probe according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 and 2, the embodiment of the utility model provides a photoelectric probe, including ROSA subassembly, sampling circuit and connecting wire, the power supply pin of ROSA subassembly is connected, and the power is used for giving the ROSA subassembly power supply, and the ROSA subassembly is used for the received optical signal to convert received optical signal into current signal (change along with the size of light) and export from the control pin of ROSA subassembly, and the control pin and the sampling circuit of ROSA subassembly are connected, sampling circuit is used for converting the current signal of ROSA subassembly's control pin output into voltage signal and exports through the connecting wire, and the other end of connecting wire is connected with the BNC that is used for with oscilloscope's BNC interface connection connects.

The ROSA component has 5 pins, pin 4 is a power supply pin, pin 1 is a monitor pin, pin 5 is a ground pin, and pins 2 and 3 are two high-speed line pins.

Further, the power supply is a direct current constant voltage source.

Furthermore, an inductor L1 for filtering alternating current is arranged between a power supply pin of the ROSA assembly and a power input end, namely a power input interface VCCR.

Furthermore, a power supply pin of the ROSA component is connected to one end of the second capacitor C2, the other end of the second capacitor C2 is grounded, a power input end, i.e., the power input interface VCCR, is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded. The first capacitor C1 and the second capacitor C2 function as filtering.

Furthermore, the connecting wire is a BNC-to-BNC coaxial wire with only one end provided with a BNC connector, a signal wire at one end of the BNC-to-BNC coaxial wire without the BNC connector is electrically connected with a voltage output end RXPWER of the sampling circuit, and a grounding wire at one end of the BNC-to-BNC coaxial wire without the BNC connector is grounded.

Furthermore, a power input interface is arranged on the PCB and used for externally connecting a power supply.

Furthermore, a monitoring pin and a power supply pin of the ROSA component are respectively welded and fixed with the PCB and are electrically connected. The connecting wire and the PCB board can be welded or can be spliced through a connector to realize electric connection.

Further, the sampling circuit is arranged on the PCB, and the connecting line is electrically connected with the PCB.

In order to reduce the cost to the minimum, a low-speed PIN ROSA can be selected, as shown in fig. 2, a VCCR PIN of the ROSA in fig. 2 is connected with a direct current constant voltage source, a BNC-to-BNC coaxial line is cut from the middle, a BNC connecting line signal line is connected to an RXPOWER PIN in fig. 2, and a grounding wire is connected to the ground.

When the ROSA input end receives an optical signal, the ROSA is supplied with power through a constant voltage source to convert the received optical signal into a current signal, the voltage of a BNC connecting line is equal to the voltage at two ends of a grounding resistor R1, the output current of the ROSA is determined by the optical power of a receiving end, the ohm law V = I R1 shows that the resistance value of the grounding resistor R1 is constant, and the voltage at two ends of the BNC is in direct proportion to the light at the receiving end of the ROSA. Wherein, the resistance value of R1 is selected according to actual conditions.

The BNC connecting line is connected to a BNC interface of the oscilloscope, so that the oscilloscope can acquire voltage signals influenced by the receiving optical power of the photoelectric probe. The concrete expression is as follows: the larger the received optical power, the larger the amplitude of the waveform displayed on the oscilloscope.

The utility model adopts the above technical scheme to convert the light signal that detects into the voltage signal that oscilloscope can detect, and utilize ROSA subassembly that has photoelectric conversion and simple circuit connection to produce the photoelectric probe in this patent, and the utility model discloses utilize ROSA, PCBA and BNC to change the BNC coaxial line, realize photoelectric probe's function, can not only save test cost and simple manufacture greatly.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optoelectronic probe, comprising: the optical fiber temperature sensor comprises a ROSA assembly, a sampling circuit and a connecting wire, wherein a power supply pin of the ROSA assembly is connected with a power supply, the power supply is used for supplying power to the ROSA assembly, the ROSA assembly is used for receiving optical signals and converting the received optical signals into current signals to be output from a monitoring pin of the ROSA assembly, the monitoring pin of the ROSA assembly is connected with the sampling circuit, the sampling circuit is used for converting the current signals output by the monitoring pin of the ROSA assembly into voltage signals to be output through the connecting wire, and the other end of the connecting wire is connected with a BNC connector used for being connected with a BNC interface of an oscilloscope.

2. The optoelectronic probe of claim 1, wherein: the power supply is a direct current constant voltage source.

3. The optoelectronic probe of claim 1, wherein: and an inductor L1 for filtering alternating current is arranged between a power supply pin of the ROSA assembly and the power supply input end VCCR.

4. The optoelectronic probe of claim 1 or 3, wherein: the power supply pin of the ROSA assembly is connected with one end of the second capacitor C2, the other end of the second capacitor C2 is grounded, the power supply input end VCCR is connected with one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded.

5. The optoelectronic probe of claim 1, wherein: the connecting wire is a BNC-to-BNC coaxial wire with a BNC connector at one end, a signal wire at one end of the BNC-to-BNC coaxial wire without the BNC connector is electrically connected with the voltage output end RXPOWER of the sampling circuit, and a grounding wire at one end of the BNC-to-BNC coaxial wire without the BNC connector is grounded.

6. The optoelectronic probe of claim 1, wherein: the sampling circuit comprises a resistor R1, one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with a connecting wire and a monitoring pin of the ROSA assembly respectively.

7. The optoelectronic probe of claim 1, wherein: the ROSA component comprises a PCB and a ROSA component, wherein the PCB is provided with a power input interface for an external power supply, a monitoring pin and a power supply pin of the ROSA component are respectively welded and fixed with the PCB and are electrically connected, the sampling circuit is arranged on the PCB, and the connecting wire is electrically connected with the PCB.