The SYCATUS Laser Linewidth Measurement System is an easy and accurate measurement system for measuring the linewidth of laser diodes. The evaluation of the linewidth of lasers is essential for development, manufacturing and quality control of lasers for optical communications. Combined Keysight Technologies' signal analyzer and dedicated test set, you can measure the linewidth easily. Laser linewidth measurement down to 40kHz. Wide wavelength range of both C and L bands. Interferometer and optical receiver are in one box.