We report what we believe to be a novel experimental heterodyne technique for the spectral analysis of continuous optical wave sources. The achieved resolution is as low as the kilohertz level, with a dynamic range in excess of 90 dB. The technique is based on a heterodyne detection between the source under test (SUT) and a Brillouin fiber laser generated by this SUT. Contrary to standard self-heterodyne techniques only a few tens of meters of optical fiber is required without the need of any optical modulators. This spectrometer has been used to characterize a distributed-feedback laser diode and a Brillouin fiber laser.
© 2010 Optical Society of AmericaFull Article | PDF Article
Stéphanie Molin, Ghaya Baili, Mehdi Alouini, Daniel Dolfi, and Jean-Pierre Huignard
Opt. Lett. 33(15) 1681-1683 (2008)
P. Sevillano, J. Subías, C. Heras, J. Pelayo, and F. Villuendas
Opt. Express 18(14) 15201-15206 (2010)
G. Ducournau, P. Szriftgiser, T. Akalin, A. Beck, D. Bacquet, E. Peytavit, and J. F. Lampin
Opt. Lett. 36(11) 2044-2046 (2011)