Journal
OPTICS EXPRESS
Volume 22, Issue 14, Pages 17409-17422Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.017409
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Funding
- Swiss National Science Foundation through an Ambizione fellowship
- Portage Bay Photonics
- AFOSR [FA9550-13-1-0027, FA9550-10-1-0439]
- AFOSR SOARD office [FA9550-13-1-0176]
- MOE ACRF Tier-1 NUS startup grant
- NRF [NRF2012NRF-NRFF001-143]
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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. (C)2014 Optical Society of America
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