Chip-scale Brillouin instantaneous frequency measurement by use of one-shot frequency-to-power mapping based on lock-in amplification

Yuqiu Xu; Yonglan Yang; Xing Li; Xin Wang; Weiwen Zou

doi:10.3788/COL202119.113902

Journals >Chinese Optics Letters >Volume 19 >Issue 11 >Page 113902 > Article

Chinese Optics Letters
Vol. 19, Issue 11, 113902 (2021)

Chip-scale Brillouin instantaneous frequency measurement by use of one-shot frequency-to-power mapping based on lock-in amplification

Yuqiu Xu, Yonglan Yang, Xing Li, Xin Wang, and Weiwen Zou^*

Author Affiliations

State Key Laboratory of Advanced Optical Communication Systems and Networks, Intelligent Microwave Lightwave Integration Innovation Center (imLic), Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

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DOI: 10.3788/COL202119.113902 Cite this Article Set citation alerts

Yuqiu Xu, Yonglan Yang, Xing Li, Xin Wang, Weiwen Zou. Chip-scale Brillouin instantaneous frequency measurement by use of one-shot frequency-to-power mapping based on lock-in amplification[J]. Chinese Optics Letters, 2021, 19(11): 113902 Copy Citation Text

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Abstract

We demonstrate a chip-scale scheme of Brillouin instantaneous frequency measurement (IFM) in a CMOS-compatible doped silica waveguide chip. In the chip-scale Brillouin IFM scheme, the frequency-to-power mapping process is achieved by one-shot detection without additional time averaging and implemented by lock-in amplification, which successfully detects the Brillouin gain of the doped silica waveguide chip in the time domain. A Costas frequency modulated signal ranging from 8 GHz to 9 GHz is experimentally measured, and the frequency measurement errors are maintained within 58 MHz.

Keywords

instantaneous frequency measurement lock-in amplification stimulated Brillouin scattering waveguide chip