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access icon free Proposal for 4-to-2 optical encoder based on photonic crystals

© The Institution of Engineering and Technology
Received 20/02/2016, Accepted 22/06/2016, Revised 12/06/2016, Published 24/06/2016

In this study, an all optical 4-to-2 encoder have been proposed which has four input and three output ports. The proposed structure can generate a 2-bit binary code considering which input port is active. For realising the proposed structure first the authors proposed and designed a BUFFER and an OR gate. Then combined these basic gates to realise the proposed encoder. The maximum switching delay and footprint for the proposed structure are about 200 fs and 880 μm2, respectively.

Inspec keywords: optical logic; encoding; binary codes; photonic crystals

Other keywords: 2-bit binary code; BUFFER gate; output port; OR gate; basic gates; time 200 fs; all optical 4-to-2 encoder; input port; footprint; photonic crystals; switching delay

Subjects: Photonic bandgap materials; Optical logic devices and optical computing techniques; Optical materials; Optical computers, logic elements, and interconnects; Codes

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