title: Experimental demonstration of broadband Lorentz non-reciprocity in an integrable photonic architecture based on Mach-Zehnder modulators.
abstract: Lorentz reciprocity is a direct consequence of Maxwell equations governing the propagation of light in passive linear media with symmetric permittivity and permeability tensors. Here, we demonstrate the first active optical isolator and circulator implemented in a linear and reciprocal material platform using commercial Mach-Zehnder modulators. In a proof-of-principle experiment based on single-mode polarization-maintaining fibers, we achieve more than 12.5 dB isolation over an unprecedented 8.7 THz bandwidth at telecommunication wavelengths, with only 9.1 dB total insertion loss. Our architecture provides a practical answer to the challenge of non-reciprocal light routing in photonic integrated circuits.
authors.forename: Yisu
authors.initials: Y
authors.lastname: Yang
authors.forename: Christophe
authors.initials: C
authors.lastname: Galland
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Kang
authors.initials: K
authors.lastname: Tan
authors.forename: Ran
authors.initials: R
authors.lastname: Ding
authors.forename: Qi
authors.initials: Q
authors.lastname: Li
authors.forename: Keren
authors.initials: K
authors.lastname: Bergman
authors.forename: Tom
authors.initials: T
authors.lastname: Baehr-Jones
authors.forename: Michael
authors.initials: M
authors.lastname: Hochberg