Decombe JB, Bryche JF, Motte JF, Chevrier J, Huant S, Fick J. Transmission and reflection characteristics of metal-coated optical fiber tip pairs.
APPLIED OPTICS 2013;
52:6620-6625. [PMID:
24085141 DOI:
10.1364/ao.52.006620]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 07/29/2013] [Indexed: 06/02/2023]
Abstract
The optical transmission and reflection in between two metalized optical fiber tips is studied in the optical near-field and far-field domains. In addition to aluminum-coated tips for near-field scanning optical microscopy (NSOM), specifically developed gold-coated fiber tips cut by focused ion beam are investigated. Transverse transmission maps of subwavelength width clearly indicate optical near-field coupling between the tips for short tip distances and become essentially Gaussian-shaped for larger distances in the far-field regime. Moreover, concentric reflection fringes observed for NSOM-type tips illustrate the influence of the receiving fiber tip on the emission pattern of the source tip.
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