Structure of 25-Gb/s Optical Engine for QSFP Enabling High-Precision Passive Alignment of Optical Assembly
Structure of 25-Gb/s Optical Engine for QSFP Enabling High-Precision Passive Alignment of Optical Assembly
复制标题
用于 QSFP 的 25 Gb/s 光学引擎结构，实现光学组件的高精度无源对准
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Ide
中科院分区：
文献类型：
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作者：
T. Yagisawa;T. Mori;R. Gappa;Kazuhiro Tanaka;Osamu Daikuhara;Takeshi Komiyama;S. Ide
我们提出了一种新型的光学组件结构，可以实现基于柔性印刷电路的光学引擎的高精度无源对准组装过程。光学引擎的光学器件与聚合物波导之间的误差小于7 μm。这种高精度对准将光耦合损耗平均抑制在发射端2.9 dB和接收端1.6 dB。光引擎安装在大批量生产的100gb /s QSFP （small form-factor pluggable）光模块上。由于光学器件的高精度对准导致了低耦合损耗，QSFP在100Gb/s的高成品率下表现出了清晰的开放和无错误的操作。
We propose a novel structure for optical assembly that enables high-precision passive alignment assembly process for our flexible printed circuit -- based optical engine. The optical engines are fabricated with less than 7 μm of misalignment between optical devices and polymer waveguides. This high-precision alignment suppresses the optical coupling losses to an average of 2.9 dB for the transmitter side and, 1.6 dB for the receiver side. The optical engines are installed to a high-volume product of 100 Gb/s quad small form-factor pluggable (QSFP) optical transceivers. The QSFP demonstrated clear eye opening and error-free operation at 100Gb/s with high yield rate thanks to the low-coupling loss resulting from the high-precision alignment of optical devices.