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泉三高速紧急电话及广播系统技术改进与功能实现
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作者 曹乾 《福建交通科技》 2021年第11期110-113,共4页
阐述了高速公路隧道紧急电话及广播系统的发展历程,提出采用基于EPON数据传输组网技术的单纤分光耦合器并联结构IP型紧急电话及广播系统技术改进方案,并分析了采用这种组网方式的优点。目前,该技术改进方案已经在泉三高速(三明段)隧道... 阐述了高速公路隧道紧急电话及广播系统的发展历程,提出采用基于EPON数据传输组网技术的单纤分光耦合器并联结构IP型紧急电话及广播系统技术改进方案,并分析了采用这种组网方式的优点。目前,该技术改进方案已经在泉三高速(三明段)隧道投入运行,系统运行稳定可靠,可为今后福建省的紧急电话系统设计和施工提供参考。 展开更多
关键词 泉三高速 紧急电话及广播系统 EPON 分光耦合器 技术改进
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A novel polarization splitter based on three-core photonic crystal fibers 被引量:1
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作者 杨倩倩 侯蓝田 《Optoelectronics Letters》 EI 2011年第1期33-36,共4页
A novel polarization splitter based on photonic crystal fibers(PCFs) with three cores of high birefringence is proposed.The 45o linearly polarized light is launched into a core.After a coupling length(about 1500 μm),... A novel polarization splitter based on photonic crystal fibers(PCFs) with three cores of high birefringence is proposed.The 45o linearly polarized light is launched into a core.After a coupling length(about 1500 μm),the xand y-polarized light beams are separated into different cores.When the light is launched into another core,the xand y-polarized light from different cores can be obtained and the degree of separation can be also adjusted.The polarization splitter is highly flexible and adjustable.The length of the polarization splitter is about 1500 μm which is just the coupling length.So it has appreciate significance of manufacturing mini-type photonic apparatus in integrated optics. 展开更多
关键词 Crystal whiskers LIGHT Light polarization Photonic crystals PHOTONICS POLARIZATION
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