Shuai Gu, Pengcheng Pi, Zhenggang Lian, Xin Wang, Xinzhi Sheng, Shuqin Lou. Research on Bending Characteristics of Hollow-Core Micro-Structured Fibers for Development of Fiber Optic Gyroscopes[J]. Chinese Journal of Lasers, 2023, 50(6): 0606003
- Chinese Journal of Lasers
- Vol. 50, Issue 6, 0606003 (2023)
Fig. 1. Structure of 19 cell HC-PBGF. (a) Partial diagram of designed structure; (b) SEM image of cross section of prepared fiber
Fig. 2. Structure of single ring 6-tube HC-ARF. (a) Partial diagram of designed structure; (b) SEM image of cross section of prepared fiber
Fig. 3. Transmission spectra and loss spectra of 5 m long fiber in flat state. (a) HC-PBGF; (b) HC-ARF
Fig. 4. Bending losses and mode field distributions of fundamental modes of HC-PBGF and HC-ARF fiber under different bending radii at wavelength of 1550 nm with bending direction of fiber shown by black arrow. (a) Bending losses; (b) mode field distributions of fundamental modes
Fig. 5. Diagram of bending loss test device
Fig. 6. Bending loss spectra of HC-PBGF measured at different bending radii with optical fiber wrapped around quartz rod with diameter of 0.5 cm shown in inset
Fig. 7. Bending loss spectra of HC-ARF
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Table 1. Parameters of designed HC-PBGF structure
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Table 2. Tension-induced HC-PBGF loop insertion loss
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