高折射率PDMS的溶胶-凝胶技术制备及其光波导的研究

李新媛; 仝召民

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高折射率PDMS的溶胶-凝胶技术制备及其光波导的研究

光学材料 | 更新时间：2025-10-09

- 高折射率PDMS的溶胶-凝胶技术制备及其光波导的研究
- Sol-gel preparation of high refractive index PDMS and its optical waveguides
- 光学技术 2025年51卷第4期页码：485-490
- 作者机构：
  
  山西大学激光光谱研究所光量子技术与器件国家重点实验室，山西太原 030000
- 作者简介：
  
  李新媛（1999— ），女，硕士研究生，从事高折射率PDMS制备。lixinyuan0320@163.com
  仝召民（1982— ），男，副教授，硕士生导师，从事激光显示技术与微纳传感器研究。zhaomim.tong@sxu.edu.cn
- 基金信息：
  
  山西省重点研发计划(202102030201002);教育部长江学者和高校创新团队(IRT_17R70);国家自然科学基金重点项目(11434007);山西省“1331工程”重点学科建设基金;“111”项目(D18001)
- DOI：
  中图分类号： TN252
- 收稿：2025-03-03，
  
  修回：2025-04-14，
  
  纸质出版：2025-07-20
- 稿件说明：
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李新媛,仝召民.高折射率PDMS的溶胶-凝胶技术制备及其光波导的研究[J].光学技术,2025,51(04):485-490.

LI Xinyuan,TONG Zhaomin.Sol-gel preparation of high refractive index PDMS and its optical waveguides[J].OPTICAL TECHNIQUE,2025,51(04):485-490.
李新媛,仝召民.高折射率PDMS的溶胶-凝胶技术制备及其光波导的研究[J].光学技术,2025,51(04):485-490. DOI：

LI Xinyuan,TONG Zhaomin.Sol-gel preparation of high refractive index PDMS and its optical waveguides[J].OPTICAL TECHNIQUE,2025,51(04):485-490. DOI：

摘要

聚二甲基硅氧烷（PDMS）光波导因其优异的生物相容性在生物医学上有广泛的应用。为了提高PDMS的折射率改善PDMS光波导的应用局限性，以端羟基聚二甲基硅氧烷（PDMS-OH）和异丙醇钛（TTIP）为主要原料采用原位溶胶凝胶法制备了PDMS-TiO

有机无机纳米复合材料。通过改变PDMS-OH与TTIP的质量比，得到折射率不同的均匀透明的PDMS-TiO

溶液，溶液固化成膜后用椭偏仪对材料进行折射率的表征，在589nm处折射率从1.40提高到了1.591。采用软压印技术，用PDMS-TiO

及PDMS分别作为波导的芯层和包层制备了截面为5cm×80μm的平板型多模波导，测得当输入波长为633nm，平均传输损耗为0.713dB/cm。研究为PDMS光波导在生物医学领域的应用提供了新参考。

Abstract

Polydimethylsiloxane （PDMS） optical waveguides have a wide range of biomedical applications due to their excellent biocompatibility. In order to improve the refractive index of PDMS to improve the application limitations of PDMS optical waveguides

PDMS-TiO

organic-inorganic nanocomposites were prepared by in situ sol-gel method using terminal hydroxyl polydimethylsiloxane （PDMS-OH） and titanium tetramethoxymethane isopropoxide （TTIP） as the main raw materials. By changing the mass ratio of PDMS-OH to TTIP

uniform and transparent PDMS-TiO

solutions with different refractive indices were obtained

and the refractive indices of the materials were characterized by ellipsometry after the curing of the solutions into films

and the refractive indices were increased from 1.40 to 1.591 at 589 nm. Using the soft embossing technique

the core and cladding layers of waveguides were made of PDMS-TiO

and PDMS

respectively. A flat plate-type multimode waveguide with a cross-section of 5 cm × 80 μm was prepared

and the average transmission loss was measured to be 0.713 dB/cm when the input wavelength was 633 nm.This study provides a new reference for the application of PDMS optical waveguides in biomedical fields.

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