A novel wavelength-division demultiplexer based on selectively liquid-filled photonic crystal fibers

Abstract

Abstract:

A novel 1.31/1.55um wavelength-division demultiplexer based on selectively liquid-filled three-core photonic crystal fibers (PCFs) is proposed. It consists of a normal central silica core and other two cores selectively filled with different refractive indices of liquid materials. According to coupling mode theory, wavelength-selective coupling of evanescent fields between nonidentical single-mode fibers happens as the propagation constants of two adjacent cores are equal at a particular wavelength. There are two corresponding wavelengths in three-core PCFs and then two beams of light with different wavelength can be separated from each other if appropriate parameters are chosen. Full-vectorial finite element method (FEM) is employed to analyze the properties of PCFs and simulate its coupling wavelength and length with different filled refractive indices. Numerical results by beam propagation method (BPM) demonstrate that it is possible to obtain a 4.88 mm-long 1.31/1.55 um wavelength-division demultiplexer.

Key words: fiber and waveguide optics, wavelength-division demultiplexer, finite element method, liquid-filled photonic crystal fibers, beam propagation method

CLC Number:

TN253

LI Jianhua, WANG Rong, WANG Jingyuan, XU Zhiyong, ZHAO Jiyong. A novel wavelength-division demultiplexer based on selectively liquid-filled photonic crystal fibers[J]. J4, 2011, 28(4): 507-512.

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