On-chip high sensitivity laser frequency sensing with Brillouin mutually-modulated cross-gain modulation
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Authors
Gao, Feng
Pant, Ravi
Li, Enbang
Poulton, Christopher G
Madden, Stephen J
Luther-Davies, Barry
Eggleton, Benjamin J
Choi, Duk-Yong
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Optical Society of America
Abstract
We report the first demonstration of a photonic-chip laser frequency sensor using Brillouin mutually-modulated cross-gain modulation (MMXGM). A large sensitivity (~9.5 mrad/kHz) of the modulation phase shift to probe carrier frequency is demonstrated at a modulation frequency of 50 kHz using Brillouin MMXGM in a ~7 cm long chalcogenide rib waveguide.
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Optics express