Abstract Future optical integrated circuits can be created by overcoming the diffraction limit of light that imposes a lower bound on the size limit of optical devices and plasmonics can meet the desired requirements of producing very compact optical devices. A plasmonic based compact and broadband polarizer, capable of producing single polarized ray concurrently around the two communication windows of 1. 31 μ m and 1. 55 μ m , based on hexagonal lattice photonic crystal fiber is proposed. The results show that the confinement loss of x- and y-polarized modes are 1014.05 dB/cm and 0.048 dB/cm, respectively, at the wavelength of 1. 31 μ m meaning that x-polarized mode is 20812 times lossier than y-polarized mode. Similarly, the achieved loss ratio between two orthogonal polarized modes is 6439 at the wavelength of 1. 55 μ m . In addition, the filter can also maintain a broad bandwidth of over 800 nm by keeping crosstalk greater than 20 dB for the device length of 100 μ m . The bandwidth and maximum crosstalk value can be extended by loosing compactness of the device. The simultaneous filtering performance around two communication windows with broad bandwidth and compact in length makes the proposed filter a suitable candidate for optical communication and sensing system.

中文翻译：

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用于双通信窗口的基于镀金光子晶体光纤的偏振滤波器

摘要 未来的光学集成电路可以通过克服光的衍射极限来创建，光的衍射极限对光学器件的尺寸限制施加了下限，等离子体可以满足生产非常紧凑的光学器件的要求。提出了一种基于等离子体的紧凑型宽带偏振器，能够在1. 31 μ m 和1. 55 μ m 的两个通信窗口周围同时产生单偏振射线，基于六方晶格光子晶体光纤。结果表明，在波长为 1. 31 μ m 时，x 和 y 偏振模的限制损耗分别为 1014.05 dB/cm 和 0.048 dB/cm，这意味着 x 偏振模的损耗是 y 的 20812 倍极化模式。类似地，在 1. 55 μ m 的波长下，两个正交偏振模式之间实现的损耗比为 6439。此外，通过在 100 μm 的器件长度上保持大于 20 dB 的串扰，滤波器还可以保持超过 800 nm 的宽带宽。可以通过降低设备的紧凑性来扩展带宽和最大串扰值。围绕具有宽带宽和紧凑长度的两个通信窗口的同时滤波性能使所提出的滤波器成为光通信和传感系统的合适候选者。