Relative Intensity Noise (RIN) Measurement
Semiconductor laser Relative Intensity Noise (RIN) is an important parameter that can cause significant degradation to the performance of fibre optic communications links. It is important for both laser manufacturers and systems designers to understand how RIN is measured to ensure reliable, accurate and repeatable results.
Photonic Doppler Velocimetry
The velocity measurement of fast-moving materials is essential to several areas of scientific and technical investigations, and new applications will continue to be found.
Measuring Laser Linewidth
Low linewidth lasers are important for use in systems such as coherent communications, fiber optic sensors, interferometric sensing and gas detection. This application note covers the theory and importance of laser linewidth measurements, especially as they relate to low-linewidth lasers.