Determining the graded-index profiles of channel waveguides by prism coupling method

被引：1

作者：

Yang T. ^{[1
]}

Zou H. ^{[1
]}

Wang L. ^{[1
]}

Li R. ^{[1
]}

Wang J. ^{[1
]}

Sang M. ^{[1
]}

机构：

[1] Key Laboratory of Optoelectronic Information, College of Precision Instrument and Opto-Electronics Engineering Technology Science, Tianjin University

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2010年 / 37卷 / 03期

关键词：

Channel waveguide; Guide-wave optics; Index profile of graded-index waveguide; Ion-exchanging;

D O I：

10.3788/CJL20103703.0689

中图分类号：

学科分类号：

摘要：

A method for determining the two-dimensional (2D) index profiles of channel waveguides by the datum of the effective indexes measured by prism coupling method is proposed. The channel waveguides are home-fabricated by ion-exchanged method on the substrate of phosphate glass with various diffusion times and various mask opening widths. The method for calculating the 2D index profiles is set up based on the theory of graded-index waveguides, such as Wentzel-Kramer-Brillouin (WKB) method and effective index method. First, an index profile function is supposed. Then its effective indexes calculated by a homemade program based on WKB method and effective index method are compared with the measured results of the effective index. Finally the best-fit index profile is reconstructed by modifying the supposed index profile until the calculated effective indexes are becoming very close to the measurement of the effective indexes. The relationships between the fabricating parameters, such as diffusion time and mask opening width, with index profile of waveguides can be set up. This work could be useful for optimizing the fabrication process of channel waveguides in order to obtain high quality waveguide lasers and photonic waveguide devices repeatedly and effectively.

引用

页码：689 / 695

页数：6

共 8 条

[1] Guo F., Li L., Wang M., Gaussian approximation for mode field distribution of dielectric planar waveguide TE0 mode, Chinese J. Lasers, 35, 2, pp. 235-239, (2008)
[2] Wang P., Zheng J., Righini G.C., Fabricate in Cu+-Na+ ion-exchange glass waveguide with index profile of Gauss, Chinese J. Lasers, 31, 1, pp. 37-40, (2004)
[3] Zheng J., Ma S., Zhang J., Study on the properties of ion-exchange erbium doped phosphate glass waveguids, Chinese J. Lasers, A29, 5, pp. 447-449, (2002)
[4] Ming X., Lu F., Liu H., Et al., Characterization of optical waveguide in ZnO crystal formed by MeV helium ion implantation, Chinese J. Lasers, 36, 2, pp. 453-457, (2009)
[5] Zhao S., Xu S., Wang B., Et al., Er3+/Yb3+codoped phosphate glass planar waveguides by Ag+-Li+ ion exchange, Acta Photonica Sinica, 37, 4, pp. 818-821, (2008)
[6] Weiss M.N., Srivastava R., Determination of ion-exchanged channel waveguide profile parameters by mode-index measurements, Appl. Opt., 34, 3, pp. 455-458, (1995)
[7] Veasey D.L., Funk D.S., Peters P.M., Et al., Yb/Er-co-doped and Yb-doped waveguide lasers in phosphate glass, J. Non-Cryst. Solids, 263-264, pp. 369-381, (2000)
[8] Chiang K.S., Construction of refractive-index profiles of planar dielectric waveguides from the distribution of effective indexes, J. Lightwave Technol., 3, 2, pp. 385-391, (1985)

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