Fiber cross-sectional imaging by manually controlled low coherence light sources.
We couple a variable-coherence light beam into a multimode optical fiber and observe the fiber cross-sectional images. The variation in the fiber imaging is explored as we change the degree of optical coherence of the incident light. Low coherence light is shown to be capable of improving the quality of the fiber images. Various mode patterns of a multimode optical fiber are also shown numerically and experimentally to elucidate the fiber coupling characteristics.
Sheu
Fang-Wen
FW
Department of Applied Physics, National Chiayi University, Chiayi 60004, Taiwan. fwsheu@mail.ncyu.edu.tw
Chen
Jiun-Yuan
JY