Directed xor/xnor Logic Gates Using U-to-U Waveguides and Two Microring Resonators

Author

Tian, Yonghui ; Zhang, Lei ; Yang, Lin

Author_Institution

State Key Lab. on Integrated Optoelectron., Inst. of Semicond., Beijing, China

Volume

25

Issue

1

fYear

2013

fDate

Jan.1, 2013

Firstpage

18

Lastpage

21

Abstract

We propose and demonstrate a directed optical logic circuit, which can perform the XOR and XNOR logical operations based on U-to-U waveguides and two microring resonators. Compared to the previous structure, no waveguide crossings exist in the proposed circuit, which is beneficial to reduce the insertion loss and crosstalk of the device. Two electrical signals representing the two operands of the logical operation are employed to modulate two microring resonators through the thermo-optic effect, respectively. The operation result is represented by the output optical signal. For proof of principle, XOR and XNOR operations at 10 kb/s are demonstrated.

Keywords

micromechanical resonators; optical logic; optical resonators; optical waveguides; U-to-U waveguides; XNOR logical operations; XOR logical operations; XOR/XNOR logic gates; bit rate 10 kbit/s; crosstalk; directed optical logic circuit; electrical signals; insertion loss; microring resonators; thermo-optic effect; Adaptive optics; Optical device fabrication; Optical fibers; Optical pulses; Optical resonators; Directed logic; XOR and XNOR operations; microring resonators;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2227307

Filename

6353145