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Photonic Network Communications

Erschienen in:

07.01.2017 | Original Paper

Multi-mode interference-based photonic crystal logic gates with simple structure and improved contrast ratio

verfasst von: Enaul haq Shaik, Nakkeeran Rangaswamy

Erschienen in: Photonic Network Communications | Ausgabe 1/2017

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Abstract

We present a MMI-based photonic crystal all-optical logic gate structure for logic functions such as XNOR, XOR, OR and NAND with square-type lattice of Si rods in air host. Phase-based logic inputs produce intensity-based logic outputs with high contrast ratio. The calculated ON to OFF contrast ratio for the logic functions XNOR/XOR and OR/NAND is 40.41 and 37.40 dB, respectively. Further, it is improved by 11.53 and 12.46% for XNOR/XOR and OR/NAND logic functions, respectively, by reducing the back reflection with the introduction of absorbing waveguides. The structure in both the forms has a fast response period that is less than or equal to 0.131 ps. The size of the structure is quite compact with dimension \(6.4\,\upmu \hbox {m} \times 8.8\,\upmu \hbox {m}\).

Vorheriger Artikel Application of photonic crystal ring resonator nonlinear response for full-optical tunable add–drop filtering

Nächster Artikel Simplified method for passive optical network in-service fibre-fault monitoring based on fibre Bragg gratings

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Titel: Multi-mode interference-based photonic crystal logic gates with simple structure and improved contrast ratio
verfasst von: Enaul haq Shaik
Nakkeeran Rangaswamy
Publikationsdatum: 07.01.2017
Verlag: Springer US
Erschienen in: Photonic Network Communications / Ausgabe 1/2017
Print ISSN: 1387-974X
Elektronische ISSN: 1572-8188
DOI: https://doi.org/10.1007/s11107-016-0683-7

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