Realization of a High Coupling Efficiency by Employing a Concave Lens Based on Two-Dimensional Photonic Crystals with a Negative Refractive Index

AbdelMalek, Fathi and Belhadj, Walid and Haxha, Shyqyri and Bouchriha, Habib (2007) Realization of a High Coupling Efficiency by Employing a Concave Lens Based on Two-Dimensional Photonic Crystals with a Negative Refractive Index. IEEE/OSA Journal of Lightwave Technology, 25 (10). pp. 3168-3174. ISSN 0733-8724 . (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1109/JLT.2007.904027

Abstract

A study of the interaction of a continuous-wave Gaussian beam with a concave lens used as a spot-size converter (SSC) is presented. The lens is based on a 2-D photonic crystal (PC) structure with a negative refractive index. A numerical method based on a 2-D finite-difference time domain was employed to investigate the light propagation in a photonic integrated circuitry (PIC). The PIC consisted of a single-mode fiber, an SSC, and a PC waveguide (PCW). By employing an optimized planoconcave lens, a large spot-size area of the Gaussian beam was focused/transformed into a very small spot-size area, which is even smaller than the order of the operating wavelength. Optimization of the proposed device parameters has also been reported. A significant reduction in the device size, transmission efficiency, and coupling efficiency has been achieved by optimizing the planoconcave lens and the PCW.

Item Type: Article
Uncontrolled keywords: concave lens; finite-difference time domain (FDTD); metamaterials; negative refractive index; numerical method; photonic crystals (PCs); spot-size converters (SSCs)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunications > TK5103.59 Optical communications, Fibre-optics
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Yiqing Liang
Date Deposited: 26 Jun 2008 10:47
Last Modified: 17 Jun 2014 11:14
Resource URI: https://kar.kent.ac.uk/id/eprint/6352 (The current URI for this page, for reference purposes)
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