A Novel Optical Analysis Method for the Focal Length of Muti-Core Image Fiber

Author

Yang Zhigang ; Li Xiaotao ; Xu Guan ; Li Xuefeng ; Su Jian ; Ueda, Toshitsugu ; Liu Jianfang

Author_Institution

Jilin Univ., Changchun, China

fYear

2009

fDate

14-16 Aug. 2009

Firstpage

1

Lastpage

3

Abstract

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 0.5 mum 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 2.20 mum core diameter show that the focal length is 1.258 mum. The numerical experiments have demonstrated that the FDTD method can be used to calculate the focal length of image fiber accurately.

Keywords

finite difference time-domain analysis; optical fibres; FDTD method; fiber geometry structure; finite-difference time-domain method; focal length; muticore image fiber; numerical aperture; optical analysis method; plane wave transmission process; power curve; size 2.20 mum; wavelength 0.5 mum; Apertures; Computational modeling; Finite difference methods; High speed optical techniques; Image analysis; Numerical analysis; Optical interconnections; Optical waveguides; Solid modeling; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-4412-0

Type

conf

DOI

10.1109/SOPO.2009.5230220

Filename

5230220