CN-224233696-U - Self-adaptive burst optical power measurement module

Abstract

The utility model provides a self-adaptive burst optical power measuring module, wherein a photodiode driving module in the module provides voltage VAPD for an OLT optical receiving component and outputs photocurrent I_ OpSig detected by the OLT optical receiving component to an MCU. The OLT burst mode receiving unit outputs RxSD to the differential electric signal DO+/DO-analysis judgment, the frequency divider outputs a trigger signal RSSI TRIGGER to the MCU after reducing the frequency of RxSD, and when the MCU detects RSSI TRIGGER effective signals, the MCU triggers interruption to sample the optical current I_ OpSig. The burst light power measuring module disclosed by the utility model supports burst light power test, only the burst light input to be tested is needed, no clock signal corresponding to the burst light to be tested is needed to be additionally provided, and a laser of the burst light equipment to be tested is also not needed to be driven, so that the compatibility is strong, and the dynamic reflection of the burst light intensity change is supported.

Inventors

• CAI SHUHONG

Assignees

• 南京芯宁光技光电有限公司

Dates

Publication Date

20260512

Application Date

20250522

Claims (3)

1. 1. The self-adaptive burst optical power measuring module is characterized by comprising an OLT optical receiving component, a photodiode driving module, an OLT burst mode receiving unit, a frequency divider and an MCU, wherein the OLT optical receiving component is used for receiving burst light to be measured and converting the burst light into differential electric signals DO+/DO-, the output end of the OLT optical receiving component is connected with the input end of the OLT burst mode receiving unit, the output end of the OLT burst mode receiving unit is connected with the frequency divider, the output end of the frequency divider is connected with the MCU, the photodiode driving module provides voltage VAPD for the OLT optical receiving component and outputs photocurrent I_ OpSig detected by the OLT optical receiving component to the MCU, the OLT optical receiving component converts the received burst light to the differential electric signals DO+/DO-, the received differential electric signals DO+/DO-is analyzed and judged, when the differential electric signals DO+/DO-detected by the OLT burst mode receiving unit are larger than a set threshold, the receiving signal indication RxSD outputs an effective value, when the differential electric signals DO+/DO-is smaller than the set threshold, the receiving signal indication RxSD outputs an ineffective value, the frequency of the received signal is reduced, and the frequency divider outputs the effective signal indication signal RxSD to the MCU OpSig after the frequency is reduced, and the frequency of the received signal is triggered, and the frequency of the received signal is reduced to the frequency is detected, and the frequency is OpSig is triggered.
2. 2. The adaptive burst optical power measurement module according to claim 1, wherein the photocurrent i_ OpSig is proportional to the intensity of the burst light to be measured.
3. 3. The adaptive burst optical power measurement module according to claim 2, wherein the MCU is connected to the computer through an I2C-to-USB connector, processes the result of sampling the optical current i_ OpSig and converts the result into an optical power value, and reads the optical power value through the computer.

Description

Self-adaptive burst optical power measurement module Technical Field The utility model belongs to the technical field of communication equipment, and particularly relates to a self-adaptive burst optical power measurement module. Background At present, the device with burst light is widely applied to the fields of communication, medical treatment, scientific research and the like, and how to quantify the burst light peak power at the user side is an important subject, because only knowing the size of the burst light peak power can the correct use be performed, so as to avoid damaging the docking device. However, the current optical power meters on the market are almost all used for testing the average optical power of continuous light, and do not support the burst light test. Although some devices support test burst lighting, the device under test is required to provide an interface to drive the laser or to output a synchronized clock, which obviously is not applicable to burst lighting devices because it does not exist for testing its peak power, and the laser is a fine device, providing external drive to the user presents an application risk. While some devices use a peak hold mechanism, although the burst optical peak value can be measured, only the maximum value is held, and the burst optical power cannot be reflected in real time for optical power below the peak value. Normally, an OLT (Optical LINE TERMINAL) Optical module receives a burst light signal, and the system in which the OLT is located knows when the burst light is received, so that the system can provide a trigger signal for the OLT Optical module, and after the OLT Optical module receives a valid trigger signal, samples the received burst light and calculates the peak power. The trigger signal input with known time sequence becomes a signal which is indispensable for the measurement of the burst received optical power of the OLT optical module, and cannot be adaptively triggered and sample the burst optical peak power. Therefore, there is a need for a burst optical power measurement module that can solve the above problems. Disclosure of Invention The utility model aims to provide a self-adaptive burst light power measurement module which supports burst light power test, only needs burst light input to be tested, does not need to additionally provide a clock signal corresponding to burst light to be tested, does not need to drive a laser of burst light equipment to be tested, and has strong compatibility. In order to achieve the above object, the present utility model provides an adaptive burst optical power measurement module, which includes an OLT optical receiving assembly, a photodiode driving module, an OLT burst mode receiving unit, a frequency divider, and an MCU. The OLT optical receiving component is used for receiving burst light to be detected and converting the burst light into differential electric signals DO+/DO-. The output end of the OLT optical receiving component is connected with the input end of the OLT burst mode receiving unit, the output end of the OLT burst mode receiving unit is connected with the frequency divider, and the output end of the frequency divider is connected with the MCU. The photodiode driving module provides voltage VAPD for the OLT light receiving component and outputs photocurrent i_ OpSig detected by the OLT light receiving component to the MCU. The OLT optical receiving assembly converts the received burst light to be detected into a differential electrical signal DO+/DO-. The OLT burst mode receiving unit analyzes and judges the received differential electric signal DO+/DO-and outputs an effective value by the receiving signal indication RxSD when the OLT burst mode receiving unit detects that the differential electric signal DO+/DO-is larger than a set threshold value, outputs an ineffective value by the receiving signal indication RxSD when the differential electric signal DO+/DO-is smaller than the set threshold value, outputs a trigger signal RSSI TRIGGER to the MCU after the frequency divider reduces the frequency of the receiving signal indication RxSD, and triggers interruption when the MCU detects RSSI TRIGGER effective signals to sample the photoelectric current I_ OpSig. Preferably, the photocurrent i_ OpSig is proportional to the intensity of the burst light to be measured. Preferably, the MCU is connected with the computer through the I2C-to-USB connector, processes the result of sampling the light current I_ OpSig, converts the result into an optical power value, and reads the optical power value through the computer. Compared with the prior art, the utility model has the following beneficial effects: 1. The burst optical power measuring module disclosed by the utility model uses the universal OLT optical receiving component and the OLT burst mode receiving unit, and the burst optical power measuring module can realize burst optical power measurement by correspondingly connecting a