Planar waveguide-type saturable absorber based on carbon nanotubes

被引：27
作者：
Kashiwagi, Ken
Yamashita, Shinji
Nasu, Yusuke
Yaguchi, Hiroshi
Goh, Chee Seong
Set, Sze Yun
机构：
[1] Univ Tokyo, Dept Elect Engn, Grad Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan
[2] NTT Corp, Atsugi, Kanagawa 2430198, Japan
[3] Alnair Labs Corp, Setagaya Ku, Tokyo 1540005, Japan
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 08期
关键词：
D O I：
10.1063/1.2338779
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors propose and demonstrate a planar waveguide-type optical device based on carbon nanotubes (CNTs). They realize saturable absorbers utilizing the interaction between the evanescent field of guiding mode and the CNTs. Saturable absorption characteristics are observed and insertion loss decreases similar to 3% by high power pulsed laser. The device shows that polarization dependence originated from the asymmetric structure of their device and over 15 dB polarization dependent loss. The saturable absorption is observed only in the polarization state that shows a maximum loss caused by the CNTs.
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页数：3
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