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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

IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS,
443001, Samara, Russia, Molodogvardeyskaya 151,
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.

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.

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

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.


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