MP2110A Optical Module RINxOMA Test Methodology and Advantage Analysis
With the development of optical communication technology, the rate and capacity of optical modules are increasing, and the performance test of optical modules also puts forward higher requirements. Among them, RINxOMA is an important performance index, which defines the ratio of the noise power generated by the optical signal output from the optical module at the receiving end to the signal power, reflecting the noise performance and signal quality of the optical module. the smaller the value of RINxOMA is, the lower the noise of the optical module is, and the higher the quality of the signal is.
The RINxOMA test method is defined in detail in the IEEE 802.3 specification. Simply put, the RINxOMA test method is to feed the optical signal output from the optical module back to the optical module through the polarisation controller and optical splitter, and use an oscilloscope to capture the eye diagram data to calculate the RINxOMA value. However, the traditional RINxOMA test method has some drawbacks, for example:
- Multiple instruments and equipment are required, such as BERT, oscilloscope, polarisation controller, tunable light reflector, etc., which take up a lot of space, are costly and complicated to connect.
- Manual adjustment of polarisation controllers and tunable light reflectors is required, which is cumbersome, time-consuming and of low accuracy.
- It is necessary to measure each signal channel individually, which is inefficient and unable to observe the differences and correlations between multiple channels at the same time.
To solve these problems, this paper introduces a method for RINxOMA testing using the MP2110A instrument and analyses the advantages and application scenarios of the method.
MP2110A RINxOMA Test Method for Optical Modules
The MP2110A is an integrated BERT and 4-channel sampling oscilloscope that can be used for RINxOMA testing of optical modules from 10G to 800G. The advantage of the MP2110A is that it can measure multiple signal channels at the same time, which improves the testing efficiency and accuracy, and reduces the testing cost and time.
RINxOMA test steps for MP2110A:
- Initialise the measurement environment settings, including the optical module's wavelength, baud rate, code type, filter bandwidth and other parameters.
- Adjust the polarisation controller so that the optical signal output from the optical module is linearly polarised light in a fixed direction, and a certain percentage of the optical signal is fed back to the optical module using an optical splitter and an adjustable optical reflector.
- The modulation signal of the square wave code pattern, which consists of a number of consecutive 1's and 0's, is input to the optical module, and its fundamental frequency can be used as the trigger signal of the oscilloscope.
- The eye diagram data is captured with an oscilloscope and the value of RINxOMA is automatically calculated with the formula: RINxOMA = 10log10[ / ], where RNone and RNzero are the noise power at the 1 and 0 levels, respectively, OMA is the optical modulation amplitude, and BW is the filter bandwidth.
The following figure shows the RINxOMA test method of MP2110A optical module:
MP2110A Optical Module RINxOMA Test Method Advantage Analysis
- Integration of BERT and oscilloscope functions reduces the number of instruments and equipment, saves space and cost, and simplifies connection and operation.
- The RINxOMA values of multiple signal channels can be measured at the same time, which improves test efficiency and accuracy, and facilitates comparison and analysis between multiple channels.
- Polarisation controller and tunable light reflector can be adjusted automatically, reducing manual intervention, error and time.
- The value of RINxOMA can be calculated automatically and displayed on the instrument's screen, eliminating the need for additional software or computers.
The MP2110A RINxOMA test method for optical modules is suitable for fast, accurate and comprehensive evaluation of the noise performance and signal quality of optical modules. The method can be used in optical module R&D, production, quality control, troubleshooting, and other scenarios. the MP2110A RINxOMA test method for optical modules is an efficient, accurate, and convenient test method for optical module performance testing.
With the development of optical communication technology, the rate and capacity of optical modules are increasing, and the performance test of optical modules also puts forward higher requirements. Among them, RINxOMA is an important performance index, which defines the ratio of the noise power generated by the optical signal output from the optical module at the receiving end to the signal power, reflecting the noise performance and signal quality of the optical module. the smaller the value of RINxOMA is, the lower the noise of the optical module is, and the higher the quality of the signal is.
The RINxOMA test method is defined in detail in the IEEE 802.3 specification. Simply put, the RINxOMA test method is to feed the optical signal output from the optical module back to the optical module through the polarisation controller and optical splitter, and use an oscilloscope to capture the eye diagram data to calculate the RINxOMA value. However, the traditional RINxOMA test method has some drawbacks, for example:
- Multiple instruments and equipment are required, such as BERT, oscilloscope, polarisation controller, tunable light reflector, etc., which take up a lot of space, are costly and complicated to connect.
- Manual adjustment of polarisation controllers and tunable light reflectors is required, which is cumbersome, time-consuming and of low accuracy.
- It is necessary to measure each signal channel individually, which is inefficient and unable to observe the differences and correlations between multiple channels at the same time.
To solve these problems, this paper introduces a method for RINxOMA testing using the MP2110A instrument and analyses the advantages and application scenarios of the method.
MP2110A RINxOMA Test Method for Optical Modules
The MP2110A is an integrated BERT and 4-channel sampling oscilloscope that can be used for RINxOMA testing of optical modules from 10G to 800G. The advantage of the MP2110A is that it can measure multiple signal channels at the same time, which improves the testing efficiency and accuracy, and reduces the testing cost and time.
RINxOMA test steps for MP2110A:
- Initialise the measurement environment settings, including the optical module's wavelength, baud rate, code type, filter bandwidth and other parameters.
- Adjust the polarisation controller so that the optical signal output from the optical module is linearly polarised light in a fixed direction, and a certain percentage of the optical signal is fed back to the optical module using an optical splitter and an adjustable optical reflector.
- The modulation signal of the square wave code pattern, which consists of a number of consecutive 1's and 0's, is input to the optical module, and its fundamental frequency can be used as the trigger signal of the oscilloscope.
- The eye diagram data is captured with an oscilloscope and the value of RINxOMA is automatically calculated with the formula: RINxOMA = 10log10[ / ], where RNone and RNzero are the noise power at the 1 and 0 levels, respectively, OMA is the optical modulation amplitude, and BW is the filter bandwidth.
The following figure shows the RINxOMA test method of MP2110A optical module:
MP2110A Optical Module RINxOMA Test Method Advantage Analysis
- Integration of BERT and oscilloscope functions reduces the number of instruments and equipment, saves space and cost, and simplifies connection and operation.
- The RINxOMA values of multiple signal channels can be measured at the same time, which improves test efficiency and accuracy, and facilitates comparison and analysis between multiple channels.
- Polarisation controller and tunable light reflector can be adjusted automatically, reducing manual intervention, error and time.
- The value of RINxOMA can be calculated automatically and displayed on the instrument's screen, eliminating the need for additional software or computers.
The MP2110A RINxOMA test method for optical modules is suitable for fast, accurate and comprehensive evaluation of the noise performance and signal quality of optical modules. The method can be used in optical module R&D, production, quality control, troubleshooting, and other scenarios. the MP2110A RINxOMA test method for optical modules is an efficient, accurate, and convenient test method for optical module performance testing.