Girschikofsky Maiko, Rosenberger Manuel, Förthner Michael, Rommel Mathias, Frey Lothar, Hellmann Ralf
Applied Laser and Photonics Group, University of Applied Sciences Aschaffenburg, 63743 Aschaffenburg, Germany.
Chair of Electron Devices, Friedrich-Alexander University Erlangen, 91058 Erlangen, Germany.
Sensors (Basel). 2017 Oct 26;17(11):2459. doi: 10.3390/s17112459.
Embedded channel waveguide Bragg gratings are fabricated in the Ormocer hybrid polymers OrmoComp, OrmoCore, and OrmoClad by employing a single writing step technique based on phase mask technology and KrF excimer laser irradiation. All waveguide Bragg gratings exhibit well-defined reflection peaks within the telecom wavelengths range with peak heights of up to 35 dB and -3 dB-bandwidths of down to 95 pm. Furthermore, the dependency of the fabricated embedded channel waveguide Bragg gratings on changes of the temperature and relative humidity are investigated. Here, we found that the Bragg grating in OrmoComp is significantly influenced by humidity variations, while the Bragg gratings in OrmoCore and OrmoClad exhibit linear and considerably high temperature sensitivities of up to -250 pm/ ∘ C and a linear dependency on the relative humidity in the range of -9 pm/%.
通过采用基于相位掩膜技术和KrF准分子激光辐照的单写入步骤技术，在有机陶瓷杂化聚合物OrmoComp、OrmoCore和OrmoClad中制备了嵌入式沟道波导布拉格光栅。所有波导布拉格光栅在电信波长范围内均呈现出明确的反射峰，峰值高达35 dB，-3 dB带宽低至95 pm。此外，还研究了制备的嵌入式沟道波导布拉格光栅对温度和相对湿度变化的依赖性。在此，我们发现OrmoComp中的布拉格光栅受湿度变化的影响显著，而OrmoCore和OrmoClad中的布拉格光栅呈现出线性且相当高的温度灵敏度，高达-250 pm/°C，并且在-9 pm/%的范围内对相对湿度呈线性依赖关系。
