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Proceedings Paper

Chirped DFB gratings using bent waveguides to tailor specific laser properties
Author(s): Hartmut Hillmer
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Paper Abstract

Bent waveguides are superimposed on homogeneous distributed feedback (DFB) grating fields to generate chirped DFB gratings. This efficient and high-resolution method enables the fabrication of arbitrarily axially chirped DFB gratings by appropriately bent waveguides which reveal differences between neighboring effective DFB pitches in the sub-interatomic range. The bending functions are generated by high-resolution lithography on a set of masks which can be frequently reused for a low-cost production process. The design principles are described defining specific unit cells which are reproduced as often as necessary to obtain a full coverage of the wafer. The method is demonstrated for semiconductor lasers including DFB gratings.

Paper Details

Date Published: 1 March 1996
PDF: 11 pages
Proc. SPIE 2713, Fifth International Conference on Industrial Lasers and Laser Applications '95, (1 March 1996); doi: 10.1117/12.234182
Show Author Affiliations
Hartmut Hillmer, Deutsche Telekom (Germany)

Published in SPIE Proceedings Vol. 2713:
Fifth International Conference on Industrial Lasers and Laser Applications '95
Vladislav Ya. Panchenko; Vladimir S. Golubev, Editor(s)

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