Multi-channel Si-liquid crystal filter with fine tuning capability of individual channels for compensation of fabrication tolerances

被引：0

作者：

Anna Baldycheva

Vladimir A Tolmachev

Kevin Berwick

Tatiana S Perova

机构：

[1] Trinity College Dublin,Department of Electronic and Electrical Engineering

[2] College Green,Department of Electronic and Communications Engineering

[3] Ioffe Physical Technical Institute,undefined

[4] Dublin Institute of Technology,undefined

来源：

Nanoscale Research Letters | / 7卷

关键词：

Multi-cavity photonic crystal; Coupled Fabry-Pérot resonators; Liquid crystal devices; Integrated optics devices; Wavelength filtering devices; Lithography error; Line-width variation; Critical dimension variation; 42.60.Da; Resonators; Cavities; Amplifiers; Arrays; Rings; 42.60.Fc; Modulation; Tuning; Mode locking; 42.70.Df; Liquid crystals;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this study, a technique for the optimization of the optical characteristics of multi-channel filters after fabrication is proposed. The multi-channel filter under consideration is based on a Si photonic crystal (PhC), tunable liquid crystal and opto-fluidic technologies. By filling air grooves in the one-dimensional, Si-Air PhC with a nematic liquid crystal, an efficiently coupled multi-channel filter can be realised in which a wide stop band is used for channel separation over a wide frequency range. By selectively tuning the refractive index in various coupled cavities, continuous individual tuning of the central channel (or edge channels) up to 25% of the total channel spacing is demonstrated. To our knowledge, this is the first report on the electro-optical solution for the compensation of fabrication tolerances in an integrated platform.

引用