共查询到20条相似文献,搜索用时 76 毫秒
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采用一种间接方法,计算出了DCNP/PEK-c主客掺杂聚合物薄膜在1300nm波长下的折射率;在对其平板光波导研究的基础上,进行了新型单模倒脊型聚合物光波导的设计与制做。结果表明,此种新型光波导具有较好的单模性。 相似文献
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随着PCB对高密度和高速率传导的要求越来越高,光电印制电路板(EOPCB)作为PCB的新一代产业已成为历史发展的必然。无论从材料的结构、性能,还是材料自身的成本和可加工性,聚合物光学材料都显示出了比无机材料更加优越的应用前景。对聚合物光波导材料的研究主要集中在提高其热及化学稳定性和降低材料的吸收损耗等方面。本文首先对光电印制电路板进行了简要概述,接着对聚合物光波导的分类、特点、材料、主要性能及提高方法分别作了比较详细介绍,然后对几种常用的聚合物光波导材料的单体及合成作了进一步阐述,最后对聚合物光波导加工成型工艺和相关性能检测方法进行了详尽阐述。 相似文献
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本文首先对用于光电印制电路板上的聚合物光波导的材料及特点进行了详细介绍并作比较,然后对聚合物光波导材料聚甲基丙烯酸甲酯性能的提高方法进行了详尽介绍,并对聚合物光波导材料含氟聚酰亚胺的单体及合成进行了简单介绍,最后对聚合物光波导的成型工艺和相关性能检测方法进行了详尽阐述。 相似文献
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In-Kui Cho Woo-Jin Lee Myung-Yung Jeong Hyo-Hoon Park 《Photonics Technology Letters, IEEE》2008,20(6):410-412
A practical optical transmitter was prepared using a polymer waveguide with integrated reflector mirrors. The optical transmitter module consisted of a metal optical bench, a module printed circuit board, a driver integrated circuit, a vertical-cavity surface-emitting laser array, and an optical waveguide composed of integrated reflector mirrors. The cost-effective and repeatable technology for the integration of a polymer multimode waveguide and out-of-plane 45deg reflector mirrors was developed for optical coupling between the light sources and the waveguide. The data transfer measurements of the optical module were presented successfully at a data rate of 10 Gb/s. 相似文献
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T. H. C. Bouazza Keltouma Nouri J. Tao Boubakar S. Bouazza Tan-Hoa Vuong 《Radioelectronics and Communications Systems》2018,61(2):64-71
In this paper a new design of a six-port circuit based on multilayer substrate integrated waveguides (SIW) is presented. This design is based on the use of a multilayer structure aimed at reducing the dimension of the circuit while conserving the performances of the component. The designed SIW six-port is composed of two basic elements, a SIW power divider and directional coupler. These two elements are designed, optimized and matched to produce a better performance at the required operating frequency of 11 GHz. The results of simulations show that the new multilayer SIW six-port circuit has good performances including a good return loss and isolation under–20 dB and the transmission magnitude better than–10 dB. This multilayer SIW six-port has the advantage of a small size 160-34.8 mm; its width is about 50% smaller than the planar SIW six-port circuit, which helps to get a higher density of integration in telecommunication systems and allows much smaller devices to be conceived.A microstrip toSIWtransition is used in order to facilitate the integration of this component into other planar circuits. The structures are designed, simulated and optimized using the Ansoft HFSS simulation software. 相似文献
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本文采用了一种新颖的数值算法用来模拟计算光波导器件,主要以集成光学中重要的器件单元劈形与Y分岔为例,通过对数值计算引起的传播常数的误差以及传输系数的分析,对算法进行了简要评估,并将算法定量地与广为使用的有限差分光束传输法(FD-BPM)做了对比,从而突出了该算法的优点与不足之处。 相似文献
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聚合物脊形光波导设计 总被引:2,自引:1,他引:2
用5层非对称平面波导理论和等效折射率法(ERIM)分析了金属电极对聚合物脊形光波导横向模式特性及其传输损耗的影响。计算结果表明:在工作波长1.55μm波段,当常规脊形光波导的芯层厚度大于0.8μm、包层厚度大于3.0μm时,才能保证传输损耗的理论极限小于0.1dB/cm;当脊波导刻蚀深度为0.l一0.2μm、对应脊波导宽度为7—5μm时,可满足脊波导横向单模传输。 相似文献
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本文介绍了现在应用的几种LiNbO_3集成波导电光器件,讨论了调制器、开关、偏振器、滤光器等的工作机制和性能,并侧重介绍了当今光通信中应用最多的调制器件。 相似文献
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《Microwave Theory and Techniques》1978,26(10):716-719
This paper describes the equivalent network constants of several patterns of the planar circuit mounted in a waveguide which was proposed by this author. As an example of the application of the circuit, a planar circuit is designed for a 12-GHz band downconverter by using the equivalent network constants. 相似文献