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Proceedings Paper

Novel cost effective carbon nanotubes deposition technique using optical tweezer effect
Author(s): Ken Kashiwagi; Shinji Yamashita; Sze Yun Set
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Paper Abstract

Carbon nanotubes (CNTs) have been intensively studied for optical applications because of their useful characteristics. However, handling of the CNTs is one of the largest problems for device applications. Several methods have been reported to fabricate optical devices, such as spray method, direct synthesis method, and polymer embedding method. These methods require complicated process and dissipate excessive amount of CNTs. Therefore, an easy and cost effective handling technique of CNTs is required. In this paper, we propose and demonstrate a novel technique to deposit CNTs onto only the core region of end facets of optical fibers. We successfully realized area selective deposition using optical tweezers. This technique requires a very simple setup and consumes only a small amount of CNTs. We confirmed presence of CNTs at the selected region by microscopic Raman spectroscopy. As an optical device application, we inserted the CNT deposited fiber into the fiber ring laser cavity as a saturable absorber, and realized passive modelocking. This technique will allow us to realize low-cost CNT-based photonic devices.

Paper Details

Date Published: 9 February 2007
PDF: 7 pages
Proc. SPIE 6478, Photonics Packaging, Integration, and Interconnects VII, 64780G (9 February 2007); doi: 10.1117/12.700054
Show Author Affiliations
Ken Kashiwagi, The Univ. of Tokyo (Japan)
Shinji Yamashita, The Univ. of Tokyo (Japan)
Sze Yun Set, Alnair Labs. Corp. (Japan)

Published in SPIE Proceedings Vol. 6478:
Photonics Packaging, Integration, and Interconnects VII
Allen M. Earman; Ray T. Chen, Editor(s)

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