How to Perform SMSR Analysis of a Laser's Output with an OSA

This video demonstrates side mode suppression ratio (SMSR) analysis using an AQ6370E optical spectrum analyzer from Yokogawa Test&Measurement and explains how to adjust the signal span to capture side modes and execute SMSR analysis to detect and locate the closest peaks from a 1310 nanometer laser via a connected module. SMSR analysis allows engineers to quickly identify and quantify the differences between the main peak and any side peaks in terms of nanometers and power which helps ensure the quality and accuracy of a laser's output. Manufacturers want to see a single, clean peak in a laser's output without side modes or additional peaks. This indicates a laser is performing as expected without imperfections. 

Yokogawa has been developing measurement solutions for 100 years and consistently finds new ways to give R&D teams the tools they need to gain the best insights from their measurement strategies. The company has pioneered accurate power measurement throughout its history and is the market leader in digital power analyzers. Yokogawa Test&Measurement instruments are renowned for maintaining high levels of precision and for delivering value far longer than the typical shelf life of such equipment. The Precision Makers of Yokogawa Test&Measurement believe that precise and effective measurement lies at the heart of successful innovation - and has focused its own R&D on providing the tools that researchers and engineers need to address challenges great and small. Learn More