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Proceedings Paper

New concept of single-mode resonator for distributed feedback semiconductor and fiber lasers
Author(s): Vladimir N. Seminogov; Alexander I. Khudobenko; Vladislav Ya. Panchenko; Victor I. Sokolov
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Paper Abstract

The new concept of a single-mode resonator for single-frequency distributed feedback (DFB) lasers is presented. This concept is based on an embedded nonharmonic distributed Bragg structure with a sinusoidally modulated coupling coefficient, which is a combination of two superimposed sinusoidal Bragg gratings of equal heights and slightly different periods. Resonant frequencies and corresponding threshold gains of such a distributed resonator are calculated theoretically by using the coupled-mode theory. The designed resonator provides stable single-frequency oscillation and has lasing characteristics (frequencies and thresholds) very similar to those of a well-known distributed resonator with quarter-wavelength shift. The developed concept of a resonator with a sinusoidally modulated coupling coefficient can be applied both to semiconductor laser diodes with incorporated Bragg relief grating and to DFB fiber lasers with refractive index grating. The important advantage of designed new single- mode Bragg structure, as compared to quarter-wavelength-shifted structure, is that it can be fabricated very easily on semiconductor surfaces and in photosensitive fibers by direct three- beam holographic writing.

Paper Details

Date Published: 28 April 1995
PDF: 11 pages
Proc. SPIE 2382, Laser Diodes and Applications, (28 April 1995); doi: 10.1117/12.208461
Show Author Affiliations
Vladimir N. Seminogov, Scientific Research Ctr. for Technological Lasers (Russia)
Alexander I. Khudobenko, Scientific Research Ctr. for Technological Lasers (Russia)
Vladislav Ya. Panchenko, Scientific Research Ctr. for Technological Lasers (Russia)
Victor I. Sokolov, Scientific Research Ctr. for Technological Lasers (Russia)


Published in SPIE Proceedings Vol. 2382:
Laser Diodes and Applications
Kurt J. Linden; Prasad R. Akkapeddi, Editor(s)

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