Applications of a femtocomb laser optically filtered by stimulated Brillouin scattering in an optical fiber

摘要

A frequency comb is the optical spectrum formed by a train of optical pulses and comprises a series of equally spaced spectral lines. Ytterbium and Erbium based fiber lasers can produce frequency combs in the region of 1.0 and 1.5 μm respectively. The frequency comb based on an Erbium doped fiber is especially interesting because it emission is centered in the spectral region of optical fiber communications. In this work we use a frequency comb based on an Erbium doped fiber optically filtered by stimulated Brillouin scattering in an optical fiber to generate optical reference frequency in the regions of optical fiber telecommunications and microwaves. The study of the stability of the isolated tooth are performed, resulting two orders of magnitude better than the stability of the pump laser used. This result is the calibration of telecommunication wavelength meters. Also, we analyze some applications based on the Brillouin filtering technique.