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Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1053–1055

Intermodal interference induced significant frequency modulation to amplitude modulation conversion in a broadband large-mode-area fiber laser

Jing Li, Honghuan Lin, Feng Jing, Dangpeng Xu, Zhihua Huang, Ying Deng, Yuanchao Geng, Mingzhong Li, Rui Zhang, Na Zhu, and Jianjun Wang  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1053-1055 (2011)
http://dx.doi.org/10.1364/OL.36.001053


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Abstract

The conversion of the FM-to-AM effect induced by intermodal interference in the broadband large-mode-area (LMA) fiber laser was first investigated theoretically and experimentally. The numerical simulation results show that the spectrum transfer functions are different at different positions of the LMA fiber end face owing to the intermodal interference, so the output broadband pulses are different. We attain the similar results in the experiment when measuring the output pulse with the single mode fiber sampling oscilloscope. Whereas there is no amplitude modulation for the output pulse when measured by the bulk detector owing to the orthogonal characteristic of the eigenmodes.

© 2011 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.5060) Fiber optics and optical communications : Phase modulation
(260.3160) Physical optics : Interference

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 29, 2010
Revised Manuscript: February 17, 2011
Manuscript Accepted: February 18, 2011
Published: March 17, 2011

Citation
Jing Li, Honghuan Lin, Feng Jing, Dangpeng Xu, Zhihua Huang, Ying Deng, Yuanchao Geng, Mingzhong Li, Rui Zhang, Na Zhu, and Jianjun Wang, "Intermodal interference induced significant frequency modulation to amplitude modulation conversion in a broadband large-mode-area fiber laser," Opt. Lett. 36, 1053-1055 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1053

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