IEEE Photonics Technology Letters
2011
Influence of Waist Length in Lossy Mode Resonances Generated With Coated Tapered Single-Mode Optical Fibers
ABIÁN BENTOR SOCORRO; IGNACIO DEL VILLAR; JESÚS MARÍA CORRES; FRANCISCO JAVIER ARREGUI; IGNACIO RAÚL MATIAS

Abstract

In this work, the generation of electromagnetic resonances due to the deposition of a nanocoating on a tapered single-mode optical fiber is analyzed. The layer-by-layer technique is used to control the thickness of the nanocoating. According to the results that have been obtained, the depth of the resonance depends on the length of the waist region. Variations in the transmitted optical power of 40 dB are observed in just a few layers. This can be considered in the fabrication of both highly sensitive resonance-based sensors and optical filters.

Materials and Seposition
Two standard single mode optical fibers (SMF-28) were stripped, cleaned and tapered using a smooth flame and a micropositioning system from Nadetech S.L. until two adiabatic tapers of minimal length were formed [1].
Keywords: Optical fiber sensors; Optical fiber losses; Optical losses; Layer-by-layer; Lossy mode resonances; Optical fiber nanosensor; Tapered single-mode fiber