Liquid-core, liquid-cladding photonic crystal fibers

Abstract

We experimentally demonstrate a simple and novel technique to simultaneously insert a liquid into the core of a hollow-core photonic crystal fiber (PCF) and a different liquid into its cladding. The result is a liquid-core, liquid-cladding waveguide in which the two liquids can be selected to yield specific guidance characteristics. As an example, we tuned the core-cladding index difference by proper choice of the inserted liquids to obtain control over the number of guided modes. Single-mode guidance was achieved for a particular choice of liquids. We also experimentally and theoretically investigated the nature of light confinement and observed the transition from photonic bandgap to total internal reflection guidance both with the core-cladding index contrast and with the PCF length.

Glassy Materials and Light: Part 2

“…89 A combinação dos métodos citados permite, ainda, perfis mais complexos de preenchimento como, por exemplo, o preenchimento da estrutura de casca de uma fibra de cristal fotônico com um líquido e do núcleo com outro líquido, permitindo maior controle sobre as propriedades de guiamento da luz. 118 Outra questão prática a ser abordada para que fibras optofluídicas encontrem ampla utilização fora de laboratórios especializados é o acoplamento da luz às estruturas preenchidas. De uma forma geral, sistemas à fibra óptica utilizam fontes de luz, detectores e outros dispositivos já integrados a fibras convencionais, que não requerem qualquer tipo de alinhamento para que a luz seja introduzida ou removida.…”

Optical sensing with photonic crystal fibers

“…Recently, a simple and new technique to simultaneously insert a liquid into the core of a hollow-core PCF and different liquids into the microstructured cladding was demonstrated (de Matos et al, [78]). The final result was a liquidcore, liquid-cladding waveguide in which the two liquids can be selected to yield specific guidance characteristics.…”

Theoretical Analysis and Preparation of Tapered Suspended Core Microstructure Fibers

“…In addition to the evanescent-wave MOF-based sensors, PCFs with photonic bandgap effect (PBGFs) have also been investigated for detection of gases and liquids (de Matos 2007). As these fibers have an extra air hole in the fiber core, detected chemicals can be filled in it and interact directly with guided modes.…”