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Proceedings Paper

Experimental analysis of the optical spectra of directionally bistable semiconductor ring lasers
Author(s): Maria Jose Latorre Vidal; Sandor Furst; Gabor Mezosi; Marco Zanola; Marc Sorel; Antonio Perez; Alessandro Scirè; Salvador Balle; Guido Giuliani
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Paper Abstract

The optical spectrum of monolithic Semiconductor Ring Lasers (SRLs) is measured simultaneously for both lasing directions with a grating-based OSA, in the regimes of bidirectional and unidirectional operation. In the unidirectional operation regime the SMSR is larger than 25 dB, and the directional extinction ratio (i.e., the ratio of the power emitted in the two opposite directions) is larger than 20 dB. The influence of the current injected in the active output waveguides that act as SOAs is outlined. In the unidirectional regime the linewidth of the SRL is measured by an heterodyne technique, revealing linewidth values around 2 MHz.

Paper Details

Date Published: 8 May 2008
PDF: 6 pages
Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 699725 (8 May 2008); doi: 10.1117/12.783929
Show Author Affiliations
Maria Jose Latorre Vidal, Univ. degli Studi di Pavia (Italy)
Sandor Furst, Univ. of Glasgow (United Kingdom)
Gabor Mezosi, Univ. of Glasgow (United Kingdom)
Marco Zanola, Univ. degli Studi di Pavia (Italy)
Marc Sorel, Univ. of Glasgow (United Kingdom)
Antonio Perez, Univ. Illes Balears (Spain)
Alessandro Scirè, Univ. Illes Balears (Spain)
Salvador Balle, Univ. Illes Balears (Spain)
Guido Giuliani, Univ. degli Studi di Pavia (Italy)


Published in SPIE Proceedings Vol. 6997:
Semiconductor Lasers and Laser Dynamics III
Krassimir P. Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik, Editor(s)

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