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Proceedings Paper

The role of optical feedback for controlling chaotic cases in semiconductor laser diodes
Author(s): Remzi Yildirim; Kenan Danisman; Fatih V. Celebi; Ahmet Ozek
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Paper Abstract

In this study the effect of optical feedback in semiconductor laser diodes (LD) has been examined using small signal analysis. The transfer function of LD is given as H (j(omega) m)D and transfer function of external cavity LD is given as TF (j(omega) m)HD respectively. The investigated parameters of these transfer functions are external cavity length (Lext), line-width enhancement factor ((alpha) ) and mirror power reflection coefficient (R). The gain change occurring due to optical feedback noise is shown by broadening the bandwidth and narrowing the frequency spectra and the state of chaos (coherence collapse) is determined in each case. By varying the level of reflected optical feedback power (fext) the optical feedback system of LD has been improved. In addition to that the system is driven out of chaos by finding reasonable levels for these variables.

Paper Details

Date Published: 4 December 1998
PDF: 6 pages
Proc. SPIE 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, (4 December 1998); doi: 10.1117/12.328707
Show Author Affiliations
Remzi Yildirim, Gazi Univ. (Turkey)
Kenan Danisman, Erciyes Univ. (Turkey)
Fatih V. Celebi, Baskent Univ. (Turkey)
Ahmet Ozek, Erciyes Univ. (Turkey)


Published in SPIE Proceedings Vol. 3491:
1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications
George A. Lampropoulos; Roger A. Lessard, Editor(s)

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