Mode depression phenomena of SBS in large core (>100µm diameter) fibers

Author

Zhu, C.Y. ; Gao, Q.L. ; Lu, Z.W. ; Ba, D.X. ; Yu, T. ; Li, S.S.

Author_Institution

Inst. of Opto-Electron., Harbin Inst. of Technol., Harbin, China

fYear

2010

fDate

July 28 2010-Aug. 1 2010

Firstpage

151

Lastpage

153

Abstract

We experimentally investigate the Stimulated Brillouin Scattering (SBS) beam profile in very large core (105μm) fibers with nanosecond pulse. Both phase conjugation and mode depression effect in different conditions are achieved and studied. Beam shape of step-index (SI) fiber and graded-index (GI) fiber with same parameters are contrasted. And a mode clean up mechanism in GI fiber has been suggested.

Keywords

gradient index optics; high-speed optical techniques; laser beams; laser modes; optical fibres; optical phase conjugation; stimulated Brillouin scattering; GI fiber; beam shape; graded-index fiber; mode depression; nanosecond pulse; phase conjugation; step-index fiber; stimulated Brillouin scattering beam profile; very large core fibers; Laser beams; Optical fiber communication; Optical fiber devices; Optical fiber testing; Optical fiber theory; Scattering; GI fiber; SBS; SI fiber; beam pattern; clean up;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser Physics and Laser Technologies (RCSLPLT) and 2010 Academic Symposium on Optoelectronics Technology (ASOT), 2010 10th Russian-Chinese Symposium on

Conference_Location

Harbin

Print_ISBN

978-1-4244-5511-9

Type

conf

DOI

10.1109/RCSLPLT.2010.5615374

Filename

5615374