Effective electromagnetic shielding of plastic packaging in low-cost optical transceiver modules
Effective electromagnetic shielding of plastic packaging in low-cost optical transceiver modules
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DOI：
10.1109/jlt.2003.810087
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发表时间：
2003-07
影响因子：
4.7
通讯作者：
Tzong-Lin Wu;W. Jou;S. Dai;W. Cheng
中科院分区：
文献类型：
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作者：
Tzong-Lin Wu;W. Jou;S. Dai;W. Cheng
研制了一种低成本的具有有效电磁屏蔽能力的标准1 /spl倍/ 9型塑料封装。对传输速率为155 Mb/s和1.25 Gb/s的光模块进行测试，评估其对塑料封装发射辐射的电磁屏蔽效果。结果表明，封装后的光模块屏蔽效能（SE）可达20 dB以上。研究了碳纤维增强尼龙66和液晶聚合物（LCP）塑料材料的电磁屏蔽性能。从平面波和近场源两方面研究了纤维重量百分比、碳纤维长度和材料厚度对塑料复合材料SE的影响。封装的塑料光模块具有良好的SE，适合用于低成本、低电磁干扰的千兆以太网光波传输系统。
A low-cost plastic package of the standard 1 /spl times/ 9 type with effective electromagnetic (EM) shielding ability is developed. Optical transceiver modules with transmission rates of 155 Mb/s and 1.25 Gb/s are tested to evaluate the EM shielding against emitted radiation from the plastic packaging. The results show that the packaged optical transceiver modules exhibit shielding effectiveness (SE) of over 20 dB. The EM shielding properties of plastic materials consisting of nylon66 and liquid crystal polymer (LCP) with carbon fiber reinforced are investigated. The effects of weight percentage of fibers, carbon fiber length, and material thickness on the SE of the plastic composites are studied both from the plane-wave and near-field sources approaches. The packaged plastic optical transceiver modules with their good SE are suitable for use in low-cost and low electromagnetic interference (EMI) Gigabit Ethernet lightwave transmission systems.