Photonic crystal-based optical filter: a brief investigation

Photonic crystal-based optical filter: a brief investigation Ring resonator-based channel drop filters are investigated conceptually and analytically with different ring (square and hexagonal) structures. In the proposed architecture, silicon rods ( $$n=3.4641$$ n = 3.4641 ) are contrived over an air substrate of refractive index $$n=1$$ n = 1 in the equilateral triangular lattice which has the lattice constant $$a=900\,\hbox {nm}$$ a = 900 nm . The characteristics of the design are examined for various types of pillars (circular and elliptical) and are reported in the analysis. The band gap for each structure is calculated and observed by plane-wave expansion method. The normalized transmission spectra and resonance wavelengths for different photonic crystal ring resonators are obtained using 2D finite-difference time-domain method. From the investigation, the resonance of circular pillar falls over the region of the third window at C-band (1530–1565 nm) which has the lowest attenuation losses and most widely used. Full width at half maximum and quality factor of the desired layout are also being calculated. The size of the device is about $$20 \times 14\,{\upmu }\hbox {m}$$ 20 × 14 μ m which is highly compact and useful for the integration of photonic circuits. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Photonic crystal-based optical filter: a brief investigation

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Publisher
Springer US
Copyright
Copyright © 2016 by Springer Science+Business Media New York
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-016-0620-9
Publisher site
See Article on Publisher Site

Abstract

Ring resonator-based channel drop filters are investigated conceptually and analytically with different ring (square and hexagonal) structures. In the proposed architecture, silicon rods ( $$n=3.4641$$ n = 3.4641 ) are contrived over an air substrate of refractive index $$n=1$$ n = 1 in the equilateral triangular lattice which has the lattice constant $$a=900\,\hbox {nm}$$ a = 900 nm . The characteristics of the design are examined for various types of pillars (circular and elliptical) and are reported in the analysis. The band gap for each structure is calculated and observed by plane-wave expansion method. The normalized transmission spectra and resonance wavelengths for different photonic crystal ring resonators are obtained using 2D finite-difference time-domain method. From the investigation, the resonance of circular pillar falls over the region of the third window at C-band (1530–1565 nm) which has the lowest attenuation losses and most widely used. Full width at half maximum and quality factor of the desired layout are also being calculated. The size of the device is about $$20 \times 14\,{\upmu }\hbox {m}$$ 20 × 14 μ m which is highly compact and useful for the integration of photonic circuits.

Journal

Photonic Network CommunicationsSpringer Journals

Published: Mar 22, 2016

References

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