Xue-Jian Li, Min Cao, Min Tang, Yue-An Mi, Hong Tao, Hao Gu, Wen-Hua Ren, Wei Jian, Guo-Bin Ren. Inter-mode stimulated Brillouin scattering and simultaneous temperature and strain sensing in M-shaped few-mode fiber [J]. Acta Physica Sinica, 2020, 69(11): 114203-1
- Acta Physica Sinica
- Vol. 69, Issue 11, 114203-1 (2020)
Fig. 1. The BGS of
-
mode pair in SI-FMF (Inset: The structure of SI-FMF).
-
mode pair in SI-FMF (Inset: The structure of SI-FMF). 
Fig. 2. The structure of M-FMF and the field distribution of optical modes in M-FMF: (a) The structure of M-FMF: (b)
; (c)
; (d)
; (e)
.
; (c)
; (d)
; (e)
. 
Fig. 3. The BGS of different optical mode pairs: (a)
; (b)
-
; (c)
-
.
; (b)
-
; (c)
-
. Fig. 4. The BGS of
-
mode pair in M-FMF versus: (a) n 1; (b) n 2; (c) r 1; (d) r 2.
-
mode pair in M-FMF versus: (a) Fig. 5. The displacement field distribution of acoustic mode excited by the interaction of
-
mode pair: (a)
; (b)
.
-
mode pair: (a)
; (b)
. Fig. 6. The BGS of
-
mode pair versus: (a) Temperature; (b) strain.
-
mode pair versus: (a) Temperature; (b) strain. Fig. 7. The BFS corresponding to
and
acoustic modes versus: (a) Temperature; (b) strain.
and
acoustic modes versus: (a) Temperature; (b) strain.
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Table 1.
Acousto-optic effective area by the coupling between different optical mode pairs and acoustic modes (in μm2).
不同光学模式对与声学模式之间相互耦合的声光有效面积(单位: μm2)
|
Table 2.
The coefficients and errors of temperature and strain based on SBS in different literatures.
不同研究报道中基于SBS的温度应变系数和误差
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