InP-based polarization rotator-splitter for mid-infrared photonic integration circuits
InP-based polarization rotator-splitter for mid-infrared photonic integration circuits
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DOI：
10.1063/1.5055863
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发表时间：
2019-01
期刊：
影响因子：
1.6
通讯作者：
Chi-Jui Chung;J. Midkiff;K. Yoo;A. Rostamian;Joel Guo;Ray T. Chen;S. Chakravarty
中科院分区：
文献类型：
--
作者：
Chi-Jui Chung;J. Midkiff;K. Yoo;A. Rostamian;Joel Guo;Ray T. Chen;S. Chakravarty
设计并实验研究了6.15μm低折射率对比度InGaAsInP材料系统中光波导的传输损耗和单步刻蚀偏振旋转器-分束器的工作特性，测量了TM模和TE模的传输损耗分别为4.19db/cm和3.25db/cm。所设计的逆变器可以达到接近100%的转换效率。这一研究使得具有TM偏振特性的量子级联器件和TE导二维狭缝光子晶体波导气体传感器的单片集成成为可能，用于芯片上的单片吸收光谱。
We design and experimentally demonstrate the propagation loss of waveguides and the operation of a single-step etched polarization rotator-splitter (PRS) in low index contrast InGaAs-InP material system at 6.15 μm. Propagation losses 4.19 dB/cm for TM mode and 3.25 dB/cm for TE mode are measured. The designed PRS can achieve near 100% conversion efficiency. This study enables the possibility of monolithic integration of quantum cascade devices with TM-polarized characteristics and TE-guiding two-dimensional slotted photonic crystal waveguide gas sensors for on-chip monolithic absorption spectroscopy.