TY - GEN
T1 - A novel optical analysis method for the focal length of muti-core image fiber
AU - Zhigang, Yang
AU - Xiaotao, Li
AU - Guan, Xu
AU - Xuefeng, Li
AU - Jian, Su
AU - Ueda, Toshitsugu
AU - Jianfang, Liu
PY - 2009
Y1 - 2009
N2 - Focal length of multi-core image fiber is a crucial parameter for the performance of fiberscope. In this letter, we present a novel method that includes simulating the transmission process of waveguides by inputting a plane wave in the wavelength of 0.5μm in cores using finite-difference time-domain (FDTD) method, integrating the power outputs in the end of the core and conforming the numerical aperture (NA) corresponds to the descending area of the output power curve. According to the geometry structure of the fiber, we can calculate the focal length of image fiber conveniently. Computer simulations of a multi-core image fiber with 2.20μm core diameter show that the focal length is 1.258μm. The numerical experiments have demonstrated that the FDTD method can be used to calculate the focal length of image fiber accurately.
AB - Focal length of multi-core image fiber is a crucial parameter for the performance of fiberscope. In this letter, we present a novel method that includes simulating the transmission process of waveguides by inputting a plane wave in the wavelength of 0.5μm in cores using finite-difference time-domain (FDTD) method, integrating the power outputs in the end of the core and conforming the numerical aperture (NA) corresponds to the descending area of the output power curve. According to the geometry structure of the fiber, we can calculate the focal length of image fiber conveniently. Computer simulations of a multi-core image fiber with 2.20μm core diameter show that the focal length is 1.258μm. The numerical experiments have demonstrated that the FDTD method can be used to calculate the focal length of image fiber accurately.
KW - Finite-difference time-domain (FDTD)
KW - Focal length
KW - Image fiber
KW - Numerical aperture (NA)
UR - http://www.scopus.com/inward/record.url?scp=70350520187&partnerID=8YFLogxK
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U2 - 10.1109/SOPO.2009.5230220
DO - 10.1109/SOPO.2009.5230220
M3 - Conference contribution
AN - SCOPUS:70350520187
SN - 9781424444113
BT - 2009 Symposium on Photonics and Optoelectronics, SOPO 2009
T2 - 2009 Symposium on Photonics and Optoelectronics, SOPO 2009
Y2 - 14 August 2009 through 16 August 2009
ER -