Chinese Optics Letters, 2016, 14 (4): 042301, Published Online: Aug. 6, 2018
Broadband polarization beam splitter based on a negative refractive lithium niobate photonic crystal slab Download: 958次
Abstract
Using a lithium niobate (LN) material, we propose a broadband polarization beam splitter (PBS) with high efficiency by employing a negative refractive photonic crystal (PhC) wedge slab with an angle of 60°. It can split the incident light into two parts at about 90° with TE and TM polarizations. The transmissions of polarized light for an LN-based PBS are more than 80% with a broad angle and wavelength bandwidth of 8° and 70 nm at 1.55 μm, while with a Si-based PhC, no PBS with high efficiency can be realized for the relatively lower transmission of TM output light.
Siqi Duan, Yuping Chen, Guangzhen Li, Chuanyi Zhu, Xianfeng Chen. Broadband polarization beam splitter based on a negative refractive lithium niobate photonic crystal slab[J]. Chinese Optics Letters, 2016, 14(4): 042301.