Laser Characterization is the process of measuring and analyzing laser properties such as wavelength, coherence, and stability. NEC Labs America conducts laser characterization to support optical sensing, communications, and photonics research. Accurate laser characterization enables precise distributed sensing, high-capacity optical networks, and interferometry experiments. This research ensures that NEC’s photonics systems achieve the reliability and performance required for critical applications.
We jointly estimate the phase noise power spectral densities of multiple lasers using interferometry between different combinations of laser pairs. We demonstrate a beat-frequency trackingmethod that allows under-sampling of interferometric products without phase jumps.
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NEC Laboratories America, Inc. (NEC Labs) is the US-based center for NEC Corporation’s global network of corporate research laboratories. Our diverse research groups collaborate with industry, academia and governments to provide disruptive solutions to complex problems. A leader in the integration of IT and network technologies with more than 100 years of expertise, NEC provides a combination of products and solutions that cross-utilize the company’s experience and global resources to meet the complex and ever-changing needs of its customers.