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Proceedings Paper

Nano-antenna based optical fiber probe
Author(s): Jun-Bum Park; Jinsik Kim; Sookyoung Roh; Dawoon Choi; Hyun-Joon Shin; Byoungho Lee
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Paper Abstract

We propose a resonant optical Yagi-Uda nano-antenna fabricated at the end of the optical fiber probe for the sake of extracting the information of the angular directivity by absorption of directional emission as a subwavelength optical microscopy. A Yagi-Uda nano-antenna consists of a feed element surrounded by a reflector and three directors. The reflector and directors are optimized in pitches with regards to resonance of the antenna elements using the finiteelement method. We used a focused ion beam (FIB) to cut the end of the fiber probe tip away and make the flattened surface to mount the metal nano-antenna structure, followed by FIB platinum deposition patterning for the nano-antenna. To verify the characteristics of the probe based nano-antenna, directional emission from the metal slit with asymmetric metallic surface gratings is probed and detected using the photomultiplier tube. Our approach of the nano-antenna based fiber probe is suitable for scanning applications such as detection of directional emission.

Paper Details

Date Published: 8 September 2011
PDF: 6 pages
Proc. SPIE 8120, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V, 81201I (8 September 2011); doi: 10.1117/12.894372
Show Author Affiliations
Jun-Bum Park, Seoul National Univ. (Korea, Republic of)
Jinsik Kim, Korea Univ. (Korea, Republic of)
Sookyoung Roh, Seoul National Univ. (Korea, Republic of)
Dawoon Choi, Seoul National Univ. (Korea, Republic of)
Hyun-Joon Shin, Korea Institute of Science and Technology (Korea, Republic of)
Byoungho Lee, Seoul National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 8120:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V
Shizhuo Yin; Ruyan Guo, Editor(s)

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