Flexible opto-electronic AND/NAND logical gate circuit using lightwave interference and balanced photodetection
Abstract
We report on an opto-electronic Boolean logical gate circuit for coherent optical signals, which is composed of an integrated-optic symmetric Mach-Zehnder interferometer and a balanced photodetector. The circuit flexibly operates as both AND and NAND gates by just changing the phase difference between the two lightwaves incident on the waveguide symmetric interferometer by π . As a preliminary investigation, we did not integrate the interferometer and the photodetector. We evaluated the gate circuit characteristics with the use of optical return to zero and on-off keying 40 Gbit/s signals in the 1.55 µm band. We confirmed that the gate circuit adequately operated for all the input bit patterns.
Fields of Study & Subjects
Optical Network Technologies
Neural Networks and Reservoir Computing
Advanced Photonic Communication Systems
Publication details
- Journal / source
- Optics Continuum
- Publisher
- Optica Publishing Group
- Volume
- 5
- Issue
- 2
- Pages
- 757–757
- Publication date
- 6 February 2026
- Language
- EN