| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical fiber which can be easily manufactured and is capable of suppressing stimulated Brillouin scattering (SBS). <P>SOLUTION: The optical fiber 1 is provided with an optical core region 10 including a center axis and an optical clad region 14 surrounding the optical core region 10. The optical core region 10 is composed of a first region 11, a second region 12 and a third region 13 in the order from the inside. The third region 13 as a part of the optical core region 10 is an annular acoustic core region and a waveguide mode of an acoustic wave can be localized in the third region. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
