Flexible opto-electronic AND/NAND logical gate circuit using lightwave interference and balanced photodetection
Year: 2026
Type: article
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.
Source: Optics Continuum
Authors: Koichi Takiguchi, Hironori Nishihara
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,372
Awards: G3440772896, G74644543
OpenAlex ID: W7127972229