Method for using parameters to determine the modal noise of optical components in optical fibre transmision links

摘要

In the method, a tunable optical coherent light source (1) is used to conduct a digital or analogue light signal to the optical component, and downstream of the latter the fluctuation in output which it causes is measured and displayed by determining the signal-to-noise ratio in the case of analogue signals or the bit error rate in the case of digital signals. <IMAGE>