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Proceedings Paper

RIN spectra of a two-mode lasing two-section DFB laser for optical sensor application
Author(s): Hubert Krause; Julian H. Sonksen; Jürgen Baumann; Ute Troppenz; Wolfgang Rehbein; Volker Viereck; Hartmut H. Hillmer
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Paper Abstract

We present an alternative method of determining the oscillating state of a laser and demonstrate the suitability of relative intensity noise (RIN) measurements for this purpose. The experiments were carried out using a two-section DFB laser. Optical and RIN spectra have been recorded and correlated subsequently. The variation of the maxima of the RIN spectra have been evaluated with respect to intensity and position in the frequency domain. Varying the frequency, a distinct transition in the above mentioned parameters can be observed, wich can be correlated clearly to the mode degeneracy at the transition and a dominating oscillating mode below and above. This delivers a conclusive means of determining the lasing state from RIN spectra.

Paper Details

Date Published: 8 May 2008
PDF: 9 pages
Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 699722 (8 May 2008); doi: 10.1117/12.781139
Show Author Affiliations
Hubert Krause, Univ. of Kassel (Germany)
Julian H. Sonksen, Univ. of Kassel (Germany)
Jürgen Baumann, Univ. of Kassel (Germany)
Ute Troppenz, Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut (Germany)
Wolfgang Rehbein, Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut (Germany)
Volker Viereck, Univ. of Kassel (Germany)
Hartmut H. Hillmer, Univ. of Kassel (Germany)

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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