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Analysis and formation of the transverse-mode composition of coherent radiation in a fiber optic waveguide with a stepped refractive index profile using DOE
S.V. Karpeev1,2, V.S. Pavelyev1,2, M. Duparre3, B. Lüdge3, K. Rokshtul3, Z. Schröter4

1 IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS,
443001, Samara, Russia, Molodogvardeyskaya 151,
2 Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34,
3Institute of Applied Optics, Friedrich Schiller University (Jena, Germany)
4Institute for Physical High Technology (Jena, Germany)

 PDF, 920 kB

Pages: 4-9.

Full text of article: Russian language.

Abstract:
The tasks related to measuring the power distribution over transverse modes of coherent radiation in optical fibers and excitation of particular transverse modes or their groups in a fiber are of practical importance for the research and development of fiber lasers, sensors, and fiber-optic communication lines. This work analyzes the possibility of selection of LP modes at the output of an optical fiber using binary amplitude MODANs. A technique for measuring the transverse-mode composition of radiation in an optical fiber with a stepped refractive index profile is developed and the measurements are carried out under various excitation conditions. A lowest-order mode, different from the fundamental one, is excited selectively in an optical fiber using a phase MODAN.

Keywords:
transverse-mode composition, fiber optic waveguide, DOE, MODAN, fiber laser, sensor, communication line.

Citation:
Karpeev SV, Pavelyev VS, Duparre M, Lüdge B, Rokshtul K, Schröter Z. Analysis and formation of the transverse-mode composition of coherent radiation in a fiber optic waveguide with a stepped refractive index profile using DOE. Computer Optics 2002; 23: 4-9.

References:
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