Semiconductor ring lasers tuned by external optical feedback: theory and experiment
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Fenomene electronice şi ionice (144)
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TRONCIU, Vasile, RADZIUNAS, Mindaugas, KHODER, Mulham, DANCKAERT, Jan, VERSCHAFFELT, Guy. Semiconductor ring lasers tuned by external optical feedback: theory and experiment. In: Materials Science and Condensed Matter Physics, Ed. 9, 25-28 septembrie 2018, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2018, Ediția 9, p. 60.
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Materials Science and Condensed Matter Physics
Ediția 9, 2018
Conferința "International Conference on Materials Science and Condensed Matter Physics"
9, Chișinău, Moldova, 25-28 septembrie 2018

Semiconductor ring lasers tuned by external optical feedback: theory and experiment

CZU: 537.535.376+621.375.8

Pag. 60-60

Tronciu Vasile1, Radziunas Mindaugas2, Khoder Mulham3, Danckaert Jan3, Verschaffelt Guy3
 
1 Technical University of Moldova,
2 Weierstrass Institute for Applied Analysis and Stochastics, Berlin,
3 Vrije Universiteit Brussel
 
Disponibil în IBN: 15 ianuarie 2019


Rezumat

We study theoretically properties of a semiconductor ring laser with filtered delayed optical feedback shown in Figure 1. Sections and junctions of the device are indicated by colored frames and thick black segments, respectively. Here, the frames of different colors indicate different types of the device sections. More particularly, we distinguish the amplifying sections and two types of the passive sections  Fig. 1 Schematic representation of the simulated integrated SRL with four branches of filtered and amplified bidirectional optical feedback.  The traveling-wave model [2] determining the evolution of optical fields and carrier density along the ring cavity and filtering branches is used to study the wavelength selection, switching speed and tuning in such devices. This model allows us to study in detail the effect of the different laser parameters and can be useful for designing future devices. Finally, we compare the numerical results with the experimental observations. The results show a good qualitative agreement between measured and calculated characteristics.