Symmetric waveguides in poly(methyl methacrylate) fabricated by femtosecond laser pulses
Symmetric waveguides in poly(methyl methacrylate) fabricated by femtosecond laser pulses
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DOI：
10.1364/opex.14.000291
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发表时间：
2006-01-09
期刊：
影响因子：
3.8
通讯作者：
Itoh, K
中科院分区：
文献类型：
--
作者：
Sowa, S;Watanabe, W;Itoh, K
我们报告了通过飞秒激光脉冲在块体聚甲基丙烯酸甲酯（PMMA）中制造对称波导。采用狭缝光束整形方法可以获得具有圆形横向轮廓的波导。纤芯折射率增加高达4.6 x 10(-4)，波导在波长632.8 nm处作为单模波导工作。该写入技术应用于定向耦合器的制造，以 1:1 的分光比在 632.8 nm 处分离耦合光束。 (c) 2006 年美国光学学会。
We report on the fabrication of symmetric waveguides in bulk poly(methyl methacrylate) (PMMA) by femtosecond laser pulses. A waveguide with a circular transverse profile can be obtained by using a slit beam shaping method. The refractive index in the core increases by up to 4.6 x 10(-4) and the waveguide works as single-mode waveguide at a wavelength of 632.8 nm. This writing technique is applied to the fabrication of a directional coupler to split a coupled beam with a 1:1 splitting ratio at 632.8 nm. (c) 2006 Optical Society of America.