![Optical Spectrum Analyzers](https://d27wgn5g4t3wja.cloudfront.net/img/a5597c9e-0bc7-402d-98e1-f62b15088c4a/248370.png)
Optical Spectrum Analyzers
Yokogawa Test&Measurement (Yokogawa Test&Measurement)
An Optical Spectrum Analyzer (or OSA) is a precision instrument designed to measure and display the distribution of power of an optical source over a specified wavelength span. An OSA trace displays power in the vertical scale and the wavelength in the horizontal scale.