Numerical simulation of a gradient-index fibre probe and its properties of light propagation

Abstract

Wang Chi( ) a) † , Mao You-Xin( ) b) , Tang Zhi( ) a) , Fang Chen( ) a) , Yu Ying-Jie( ) a) , and Qi Bo( ) c)

A numerical method for designing gradient-index fiber probes

“…In order to verify the effectiveness of the proposed numerical method for designing GRIN fiber probes, the fabrication and properties testing of GRIN fiber probes are overviewed below according to references [11][12][13][14]. During the fabrication process of the probe, a standard Corning SMF-28 single mode fiber is used as the principal light guide.…”

“…In addition, Ref. [13][14][15] presented analytical and numerical methods to verify the optical performance of the GRIN fiber probe. In this paper, we proposed a numerical approach to design such probes and presented the usage of pitch length of GRIN fiber lens by using the optical software, GLAD Fig.1 shows a typical model of a GRIN fiber probe, which is composed of a single mode fiber (SMF), a no-core fiber (NCF), a GRIN fiber lens, and an air path.…”

Research on a Novel Fabry–Perot Interferometer Model Based on the Ultra-Small Gradient-Index Fiber Probe

“…Due to the limitation of the F–P cavity length, the dynamic measurement range of the external cavity interferometer is small. Therefore, according to References [15,18,19], we studied a kind of ultra-small GRIN fiber probe for the F–P interferometer. The coreless fiber length of the ultra-small GRIN fiber probe was 0.36 mm, the GRIN fiber length was 0.12 mm, the working distance was 0.506 mm, the focusing spot diameter was 30 μm, and the coupling efficiency at the working distance was 51%.…”

“…In view of this, a novel F–P interferometer model based on the ultra-small gradient-index (GRIN) fiber probe is studied. The GRIN fiber probe is an all-fiber optical probe consisting of a single-mode fiber, a coreless fiber, and a GRIN fiber [14,15]. Due to its ultra-small size and superior focusing performance, it can be integrated with the signal arm of the fiber interferometer through a fusion process, which has been favored by scholars in recent years [16,17,18,19].…”

Fabrication method of ultra-small gradient-index fiber probe

“…However, there are no reports about detailed theoretical analysis of the probe. In 2011, our research group began to study the design method of ultra-small GRIN fiber probes from analytical and numerical simulation and other aspects [16][17][18][19][20][21], while no making research into fabrication. In this paper, on the basis of existing research, we explore the fabrication of the GRIN fiber probe and design the fiber cutting and fusing system based on the stereo microscope, providing a technical foundation for the study of ultra-small OCT systems based on the GRIN optical fiber probe.…”