Compact and Low-Loss Coherent Mixer Based on High Δ ZrO2-SiO2 PLC
Compact and Low-Loss Coherent Mixer Based on High Δ ZrO2-SiO2 PLC
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基于高ΔZrO2-SiO2 PLC的紧凑型低损耗相干混频器
DOI：
10.1109/jlt.2014.2338914
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发表时间：
2014
影响因子：
4.7
通讯作者：
T. Yagi
中科院分区：
文献类型：
--
作者：
Masanori Takahashi;Yasuyoshi Uchida;Shin Yamasaki;J. Hasegawa;T. Yagi
报道了一种基于高Δ平面光波导（PLC）的小型相干混频器的设计和特性。<sub></sub>采用ZrO<sub>2</sub>作为掺杂剂，实现了Δ ≥ 5%的PLC。通过优化制备工艺，制备的5.5%-Δ ZrO<sub>2</sub>-<sub>SiO2</sub>PLC的传输损耗降低到0.02dB/cm。利用ZrO<sub>2</sub>-<sub>SiO2</sub>PLC设计并制作了相干混频器，将混频器芯片尺寸缩小到4 mm × 2 mm，并通过优化光斑尺寸转换器将标准单模光纤与ZrO<sub>2</sub>-<sub>SiO2</sub>PLC之间的耦合损耗降低到0.31dB/面。
In this paper, we report design and characteristics of a compact coherent mixer based on high Δ planar lightwave circuit (PLC) which consists of ZrO<sub>2</sub>-doped silica glass. The PLC with 5% or more Δ is realized by employing ZrO<sub>2</sub> as a dopant. Propagation loss of the fabricated 5.5%-Δ ZrO<sub>2</sub>-SiO<sub>2</sub> PLC is reduced to 0.02 dB/cm by an optimized fabrication process. A coherent mixer is designed and fabricated by using ZrO<sub>2</sub>-SiO<sub>2</sub> PLC and size of the mixer chip is reduced to 4 mm × 2 mm. Coupling loss between standard single-mode fiber and ZrO<sub>2</sub>-SiO<sub>2</sub> PLC is reduced to less than 0.31 dB/facet by an optimized spot-size converter.