Waveguide shape control and loss properties of light-induced self-written (LISW) optical waveguides
Waveguide shape control and loss properties of light-induced self-written (LISW) optical waveguides
复制标题
光致自写（LISW）光波导的波导形状控制和损耗特性
DOI：
10.1109/jlt.2002.800810
复制
发表时间：
2002
影响因子：
4.7
通讯作者：
H. Ito
中科院分区：
文献类型：
--
作者：
T. Yamashita;M. Kagami;H. Ito
我们展示了自动波导形成的可行性，通过多模光纤照射到光聚合树脂的自陷效应。利用渐变折射率多模光纤，我们在实验上获得了长度超过20毫米的直波导。结果表明，它的生长特性，如波导形状和直径，取决于沿沿着用于形成波导的光纤的传播模式分布。此外，还展示了依赖于选择性光聚合进行到光聚合树脂混合物中的全固体聚合物光波导。我们称这种类型的波导为光诱导自写光波导。对于波长范围0.8/spl sim/1.0 /spl mu/m，波导中的测量传播损耗为1.0 dB/cm或更小。所提出的技术能够消除昂贵的透镜和对来自光波导器件的对准系统的需要。
We show the feasibility of automatic waveguide formation by means of the self-trapping effect of multimode optical fiber irradiation into a photopolymerizing resin. By using a graded-index multimode optical fiber, we experimentally obtained a straight waveguide of over 20 mm in length. It is shown that its growth properties, such as waveguide shape and diameter, depend on the propagation modal distribution along the optical fiber used for the waveguide formation. Moreover, an all-solid polymer optical waveguide that relies on the selective photopolymerization proceeding into the photopolymerizing resin mixture is also demonstrated. We call this type of waveguide a light-induced self-written optical waveguide. The measured propagation loss in the waveguide is 1.0 dB/cm or less for the wavelength range 0.8/spl sim/1.0 /spl mu/m. The proposed technology is capable of eliminating both costly lenses and the need for an alignment system from optical waveguide devices.