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Reflection and anomalous behavior of refractive index in defect photonic band gap structure

✍ Scribed by Sanjeev K. Srivastava; S. P. Ojha

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
128 KB
Volume
38
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This paper describes the reflectivity properties of layer‐by‐layer‐based photonic band gap (PBG) structures with a defect in their normal structures. The defect is created by the removal of a single material slab. To calculate reflectivity, we use a 2 × 2 matrix formulation. The defective PBG structure gives nearly 100% reflections in the near‐infrared region in addition to some parts of the visible region of the wavelengths for all possible angles, and thus acts as broadband reflector. Also, we study the anomalous behavior of the refractive index in these structures and find that the effective refractive index n~eff~ ≪ 1 nears the band edges. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 293–297, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11041

📜 SIMILAR VOLUMES

Group velocity, negative and ultra-high
Group velocity, negative and ultra-high index of refraction in photonic band gap materials
✍ S. P. Ojha; Sanjeev K. Srivastava 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB

## Abstract This paper shows that inside photonic band gap (PBG) materials the effective index of refraction __n__~__eff__~, defined in terms of group velocity, becomes negative in a certain range of frequencies. Also, near the photonic‐band edge the effective index of refraction __n__~__eff__~ att

Remarks on “group velocity, negative and
Remarks on “group velocity, negative and ultra-high index of refraction in photonic band gap materials”
✍ Alvaro Gómez; Angel Vegas; Miguel A. Solano 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 53 KB 👁 1 views

## Abstract In the paper of Ojha et al. (Microwave Opt Technol Lett 42 (2004), 82–87), an erroneous definition of the effective refractive index __n__~__eff__~ in a photonic band gap (PBG) structure is used. The effective refractive index __n__~__eff__~ is defined as a function of the group velocit