Effect of chaotic time delay signature on Brillouin gain spectrum in the slope-assisted chaotic BOCDA

Optics Express
Le ZhaoAdiba Afrah Himika

Abstract

In the chaotic Brillouin optical correlation domain analysis (CBOCDA) system, the broadband chaotic laser naturally widens the Brillouin gain spectrum (BGS), which provides an enhanced range for dynamic strain measurement via slope-assisted technology. However, inherent off-peak amplification at the time delay signature (TDS) position results in a deteriorated gain envelope. The mechanism behind the sub-peak of chaotic BGS is first analyzed and the negative correlated relationship between the value of main-sub-peak ratio (MSPR) and magnitude of TDS has been experimentally demonstrated. The limitation of sub-peak on the dynamic range is investigated, where the range is not greater than 400 µε at MSPR < 0 dB, and 600 µε at MSPR > 0 dB. Meanwhile, by eliminating the TDS, the BGS without sub-peak is obtained and a dynamic strain of 1200 µε is successfully identified. Moreover, the application of optimized chaotic BGS in a multi-slope assisted system to realize the enlargement of dynamic strain range is also discussed.

References

Jan 26, 2011·Optics Letters·Marcelo A SotoFabrizio Di Pasquale
Jan 26, 2011·Optics Letters·Yongkang DongXiaoyi Bao
Dec 14, 2011·Sensors·Xiaoyi Bao, Liang Chen
Jan 26, 2012·Optics Express·Asher VoskoboinikMoshe Tur
Apr 20, 2012·Optics Express·Yair PeledMoshe Tur
Apr 14, 2018·Optics Letters·Jianzhong ZhangYuncai Wang
Aug 19, 2018·Optics Express·Jianzhong ZhangYuncai Wang
Dec 16, 2016·Light, Science & Applications·Yosuke MizunoKentaro Nakamura
Mar 7, 2019·Light, Science & Applications·Dengwang ZhouXiaoyi Bao

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Imaging in CNS

Here is the latest research on cell imaging and imaging modalities, including light-sheet microscopy, in the central nervous system.