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Proceedings Paper

Pattern of mutual relationships among parameters determining operation of laser diode amplifier
Author(s): Fedor Srobar
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Paper Abstract

Topological structure of the mathematical models of the laser diode amplifier (LDA) can be visualized with the help of a diagrammatic method based on depicting differential relationships of the form (delta) y equals txy(delta) x by the diagram x yields y. The quantity txy is called the transmission function of the oriented line xy. Such atomic diagrams can be combined to more involved schemes to represent systems of mathematic formulas. The approach is demonstrated on the LDA model proposed by Adams. The diagram representing this model is derived and shown to contain two closed oriented paths - feedback loops. The transmission function of these loops are shown to have a controlling influence on the qualitative operation mode of the LDA. In particular, if their sum crosses the unity level in two distinct states, the LDA acts as a bistable element. This condition can be expressed in terms of the numeric values of the characteristics parameters such as the driving electric current, facet reflectivities, resonator length, etc.

Paper Details

Date Published: 29 December 1999
PDF: 6 pages
Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); doi: 10.1117/12.373641
Show Author Affiliations
Fedor Srobar, Institute of Radio Engineering and Electronics (Czech Republic)


Published in SPIE Proceedings Vol. 4016:
Photonics, Devices, and Systems
Miroslav Hrabovsky; Pavel Tomanek; Miroslav Miler, Editor(s)

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