Analysis on diffractive beam parameters of TE0 mode

被引：0
作者：
Li, Lianhuang [1 ,2 ]
Guo, Fuyuan [1 ,2 ]
机构：
[1] Fujian Provincial Key Laboratory for Photonics Technology, Institute of Laser and Optoelectronics Technology, Fuzhou
[2] Key Laboratory of Opto-Electronic Science and Technology for Medicine Ministry of Education, Fujian Normal University, Fuzhou
来源：
Guangxue Xuebao/Acta Optica Sinica | 2009年 / 29卷 / SUPPL.期
关键词：
Beam parameters; Diffraction; Guided-wave optics; Planar waveguide;
D O I：
10.3788/AOS200929S1.074
中图分类号：
学科分类号：
摘要：
According to ISO 11146-1: 2005, mode-field half width, far-field divergence half angle and beam propagation factor of the diffractive beam from TE0 mode in planar waveguide are analyzed by a new method. Under the condition of paraxial approximation, formulas of diffractive beam parameters as function of waveguide parameters and slit half width are derived respectively. Relation between beam parameters and slit half width are investigated by numerical calculation. The results show that beam parameters vary with changing slit half width, and if the optical field distribution in the cladding layers is not taken into account, beam propagation factor will be less than unity.
引用
收藏
页码：74 / 78
页数：4
相关论文
共 21 条
  • [1] Chen X., McMullin J.N., Haugen C.J., Et al., Planar concave grating demultiplexer for coarse WDM based on confocal ellipses, Opt. Commun., 237, 1-3, pp. 71-77, (2004)
  • [2] Guo F., Wang M., Spectral response characteristics of concave grating demultiplexer, SPIE, 6351, (2006)
  • [3] Tang Y.Z., Jia K.M., Li B.Y., Et al., Silica-based arrayed waveguide grating with flattened spectral response using a multimode interference coupler, Chin. Phys. Lett., 21, 6, pp. 1064-1066, (2004)
  • [4] Guo F., Wang M., Crosstalk characteristic of arrayed waveguide grating demultiplexer, Proc. ICOCN/ATFO 2006, pp. 140-143, (2006)
  • [5] Laser and laser-related equipment-Test methods for laser beam widths, divergence angles and beam propagation ratios, (2005)
  • [6] Hayata K., Koshiba M., Suzuki M., Modal spot size of axially nonsymmetrical fibres, Electron. Lett., 22, 2, pp. 127-129, (1986)
  • [7] Liang A.H., Mode-field-half-widths of two kinds of planar single-mode waveguides, Proc. Electron. Devices Meeting, pp. 50-53, (1994)
  • [8] Liang A.H., Huang W.B., Fan C.C., Relation between three mode-field half widths for planar single-mode waveguide and its application to splice loss evaluation, J. Lightwave Technol., 7, 12, pp. 2046-2051, (1989)
  • [9] Liang A.H., Microbending losses for noncircular weakly guiding single-mode fibers, IEEE J. Quant. Electron., 28, 6, pp. 1429-1434, (1992)
  • [10] Liang A.H., Relation between transition loss and mode-field half-width for curved noncircular weakly-guiding single-mode waveguides, IEEE J. Quant. Electron., 31, 11, pp. 2075-2077, (1995)
123