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Updated: Jul 15, 2026
High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
Published on: September 22, 2017
Analysis of nonlinear frequency sweep in high-speed tunable laser sources using a self-homodyne measurement and
1Department of Information and Communications, Gwangju Instituteof Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, South Korea. ahn@emt.inrs.ca
Abstract:
We have proposed and demonstrated a novel measurement technique for characterizing nonlinear frequency sweep in high-speed tunable laser sources by using a simple self-homodyne setup and Hilbert transformation. Measurement results, such as the variation in frequency scanning rate during a frequency sweeping process, are presented for a temperature-tuned distributed feedback laser diode and external cavity tunable laser. The time-varying optical phase of the incident light of a laser is calculated from the integration of the instantaneous optical frequency, and the tuning rate is obtained from its derivative.
