Abstract

This paper introduces a new type of magnetic-free optical circulator without utilizing a Faraday rotator, polarization beam splitter, and magneto-optic material for the first time, to the best of our knowledge. The designed circulator operates linearly and relies on the parity–time symmetric (PTS) system. The property of the non-Hermitian system (the linear PTS system) plays the key role in the suggested optical circulator so that it can simultaneously support N-ports. The proposed device is integrated, broadband, and operates in the optical telecommunication frequency band. A great value of isolation rate of 47 dB is achieved. The proposed circulator can pave the way for optical integrated circuits and optical networks.

© 2019 Optical Society of America

Dynamically reconfigurable integrated optical circulators

Duanni Huang, Paolo Pintus, Chong Zhang, Paul Morton, Yuya Shoji, Tetsuya Mizumoto, and John E. Bowers
Optica 4(1) 23-30 (2017)

Passive alignment stability and auto-alignment of multipass amplifiers based on Fourier transforms

Karsten Schuhmann, Klaus Kirch, Andreas Knecht, Miroslaw Marszalek, Francois Nez, Jonas Nuber, Randolf Pohl, Ivo Schulthess, Laura Sinkunaite, Manuel Zeyen, and Aldo Antognini
Appl. Opt. 58(11) 2904-2912 (2019)

Dual-wavelength terahertz sensing based on anisotropic Fano resonance metamaterials

Yuying Lu, Maosheng Yang, Zhang Zhang, Lanju Liang, Jining Li, and Jianquan Yao
Appl. Opt. 58(7) 1667-1674 (2019)

Versatile broadband polarization-independent optical circulators for nanophotonic integrated circuits

Curtis J. Firby, PoHan Chang, Amr S. Helmy, and Abdulhakem Y. Elezzabi
J. Opt. Soc. Am. B 35(7) 1504-1513 (2018)

Technical aspects for counting and timing photons with a digital oscilloscope

Jorge Arturo Rojas-Santana and Dorilian Lopez-Mago
Appl. Opt. 58(15) 4047-4051 (2019)