@article{oai:muroran-it.repo.nii.ac.jp:00005900,
 author = {鈴木, 優一 and SUZUKI, Yuichi and 佐藤,  信也 and SATO, Shinya and 今井,  正明 and IMAI, Masaaki},
 issue = {10},
 journal = {電気学会論文誌. A, 基礎・材料・共通部門誌},
 month = {},
 note = {application/pdf, The fundamental mode can be launched in the multimode(MM) fibers with high accuracy by suppressing modal speckle by using broad-bandwidth excitation sources such as ultra-short pluses. As temporal coherence length of broad-bandwidth sources is very short, temporal interference between the modes and thus the presence of speckle is prevented. In this paper, single-mode(SM) excitation of step-index and graded-index multimode fibers with light sources with short temporal coherence lengths is demonstrated using a Ti:Sapphire laser with wavelengths of 790 ran and 836 nm and pulse widths of 60-90 fs. As a result, the stability of the spatial beam profile was verified by coupling the output of a MM fiber into SM fiber and SM excitation in the presence of mode-coupling for the MM fibers was confirmed by experiment.},
 pages = {933--938},
 title = {Reduction of Mode-Coupling and Single-Mode Excitation in Multimode Fibers by Use of Ultra-Short Optical Pulses},
 volume = {121},
 year = {2001},
 yomi = {スズキ, ユウイチ and サトウ, シンヤ and イマイ, マサアキ}
}