Journal
OPTICS LETTERS
Volume 42, Issue 7, Pages 1281-1284Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.42.001281
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Funding
- National Science Foundation (NSF) [ECCS-1509749, ECCS-1610674]
- Shanghai Jiao Tong University (SJTU) [2016GZKF0JT001]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1610674] Funding Source: National Science Foundation
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Self-referenced temperature sensing based on thermo-optic birefringence is demonstrated on a Z-cut lithium niobate microdisk resonator. Due to the significant difference between thermo-optic coefficients of ordinary and extraordinary light, quasi-transverse magnetic (quasi-TM) and quasi-transverse electric (quasi-TE) modes in the microdisk show relative cavity resonance shift upon temperature change, which acts as a robust self-reference for temperature sensing. A temperature sensitivity of 0.834 GHz/K and a measurement uncertainty of 0.8 mK are demonstrated with an optical input power of only 1.5 mu W. (C) 2017 Optical Society of America
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