Surface-plasmon-enhanced C-shaped Nano-waveguide for Near-field Recording

• Main Authors: Yu-Chieh Chen, 陳予潔
• Other Authors: Prof. Han-Ping David Shieh
• Format: Others
• Language: en_US
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/55777252517530292334

碩士 === 國立交通大學 === 光電工程系所 === 93 === The difficulty that a high density storage system encounters lies in giving consideration on both a nano‐sized optical spot and an adequate throughput. This thesis proposed an innovative aperture design which possesses the annex of a nano‐waveguide and surface plasmon polaritons to substantially increase the throughput at a nano‐sized optical spot concomitantly. Besides, this aperture design was fabricated on the end face of a fiber, of which the compactness and flexibility facilitate to be integrated with a magnetic pickup as a near‐field hybrid one. By the analyses and optimization, an enhancement with five orders of magnitude in power throughput was derived; moreover, the implemented experimental results, a near‐field transmitted intensity with a signal‐noise ratio of 40 dB and a far‐field transmission enhancement of 33,evidently demonstrated the strong transmitted field enhancement in the near‐field region and fulfilled the requirement of a high‐density storage system.