On-chip high sensitivity laser frequency sensing with Brillouin mutually-modulated cross-gain modulation

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Journal Article
Optics Express, 2013, 21 (7), pp. 8605 - 8613
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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. © 2013 Optical Society of America.
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