Nano-antenna based optical fiber probe

Jun-Bum Park; Jinsik Kim; Sookyoung Roh; Dawoon Choi; Hyun-Joon Shin; Byoungho Lee

doi:10.1117/12.894372

7 September 2011 Nano-antenna based optical fiber probe

Jun-Bum Park, Jinsik Kim, Sookyoung Roh, Dawoon Choi, Hyun-Joon Shin, Byoungho Lee

Proceedings Volume 8120, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V; 81201I (2011) https://doi.org/10.1117/12.894372
Event: SPIE Photonic Devices + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

Jun-Bum Park, Jinsik Kim, Sookyoung Roh, Dawoon Choi, Hyun-Joon Shin, and Byoungho Lee "Nano-antenna based optical fiber probe", Proc. SPIE 8120, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V, 81201I (7 September 2011); https://doi.org/10.1117/12.894372

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