Article
Nanoscience & Nanotechnology
Yesica R. R. Bustamante, Giovanni B. de Farias, Hening A. de Andrade, Hugo E. Hernandez-Figueroa
Summary: The proposed polarization splitter and rotator (PSR) operates in the range of 1530-1590 nm on the SOI platform, based on a new bow tie converter TM0-to-TE1. Compared with other compact state-of-the-art photonic integrated devices, it exhibits the lowest crosstalk and fabrication error penalty, paving the way for high-volume photonic integration.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2021)
Article
Crystallography
Yannong Luo, Renyou Ge, Haozhi Luo, Meiyan Wu, Lidan Zhou, Makunda Aryal, Wenwei Li, Jianhui Yuan, Jian Xu, Quanxue Lan, Yongqing Li, Xinlun Cai
Summary: The study demonstrates a polarization splitter rotator based on multimode waveguide grating on a silicon-on-insulator platform. The fabricated device shows high extinction ratio, low crosstalk, and low insertion loss, making it suitable for applications in the wavelength regime 1552 nm-1562 nm.
Article
Chemistry, Multidisciplinary
Chengkun Dong, Sijie Dai, Jun Xia, Guodong Tong, Zhihai Wu, Hao Zhang, Bintao Du
Summary: In this work, an ultracompact and high-performance silicon-based polarization splitter-rotator utilizing anisotropic metasurfaces is proposed. It combines the advantages of polarization sensitivity and polarization division multiplexing, making it suitable for on-chip applications. The device shows good performance in terms of conversion loss, polarization conversion ratio, cross talk, and reflection loss.
Article
Optics
Xuanhao Wang, An Pan, Tingan Li, Cheng Zeng, Jinsong Xia
Summary: Thin-film lithium niobate coherent modulators have shown promise for the next generation coherent communication system, with high-performance polarization splitter-rotators (PSRs) being crucial for achieving dual polarization coherent modulators. A PSR demonstrated on the lithium niobate on insulator (LNOI) platform has shown excellent performance and fabrication tolerance, making it a potential candidate for use in polarization-division multiplexing optical transmitters.
Article
Optics
Ranfeng Gan, Lu Qi, Ziliang Ruan, Jie Liu, Changjian Guo, Kaixuan Chen, Liu Liu
Summary: In this study, we propose and experimentally demonstrate a polarization splitter-rotator based on adiabatic mode evolution on the thin-film lithium niobate platform. The fabricated device exhibits low insertion losses and large extinction ratios, with a large fabrication tolerance demonstrated for waveguide width variation.
Article
Engineering, Electrical & Electronic
Chunyu Deng, Wanghua Zhu, Yu Sun, Mengjia Lu, Lei Huang, Dongyu Wang, Guohua Hu, Binfeng Yun, Yiping Cui
Summary: A wide-bandwidth polarization splitter-rotator (PSR) based on LNOI strip-waveguide is proposed in this letter, which only requires a single full etching step. Experimental results show that the PSR has an insertion loss less than 1.5 dB and a polarization extinction ratio (PER) of more than 20 dB in a wide wavelength range of 1514-1640 nm for the TE0 mode. Additionally, a PER of 10 dB over 47 nm bandwidth (1502-1549 nm) for the TM0 mode is also demonstrated with our device. It indicates the promising application of this LNOI-based PSR in on-chip polarization-division multiplexing optical transmissions.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Optics
Yuan Shen, Ziliang Ruan, Kaixuan Chen, Liu Liu, Bigeng Chen, Yunjiang Rao
Summary: In this work, a broadband polarization splitter-rotator (PSR) on lithium niobate on insulator (LNOI) is proposed and experimentally demonstrated. The PSR utilizes multiple sequentially connected adiabatic tapers for waveguide mode conversion and directional coupling, achieving a 160-nm bandwidth covering C and L bands, insertion loss of less than 2 dB, and extinction ratio of more than 11 dB. The device length is shortened to 405 μm and further optimized to 271 μm, demonstrating the feasibility of higher device compactness. The proposed design and principle contribute to high-performance polarization management for integrated lithium niobate photonics.
Article
Optics
Jia-Min Liu, De-Long Zhang
Summary: This study proposes a compact, high-performance polarization beam splitter (PBS) based on a triple-waveguide coupler consisting of two thin-film LiNbO3-on-insulator (LNOI) waveguides and an amorphous silicon (alpha-Si) nanostrip assisted waveguide. By using the alpha-Si nanostrip, the PBS achieves phase matching conditions for TM polarization mode but not for TE polarization mode. Numerical results show that the PBS has a length of only 31 μm and achieves an ultra-high polarization extinction ratio (>29.4 dB) and an ultra-low insertion loss (<0.066 dB) for the TE polarization mode in the wavelength range of 1500-1600 nm, as well as a polarization extinction ratio of >20 dB and an insertion loss of <0.16 dB over a -60 nm bandwidth from 1527 nm to 1587 nm for the TM polarization mode. Moreover, the device has a larger feature size that facilitates fabrication.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Yuan Shen, Ziliang Ruan, Kaixuan Chen, Liu Liu, Bigeng Chen, Yunjiang Rao
Summary: In this work, a broadband polarization splitter-rotator (PSR) on the lithium niobate on insulator (LNOI) is proposed and experimentally demonstrated. The PSR utilizes multiple sequentially connected adiabatic tapers for waveguide mode conversion and directional coupling, achieving a 160-nm bandwidth covering the C and L bands, with low insertion loss and high extinction ratio. The device length is significantly reduced to 271 μm while maintaining comparable performances, indicating the feasibility of higher device compactness. This research contributes to high-performance polarization management for integrated lithium niobate photonics.
Article
Physics, Applied
Yu Cao, Jun Da Ng, Hong-Lin Lin, Siew Li Tan, Aaron Danner
Summary: We demonstrate an active straight waveguide polarization rotator using a c-axis single crystal thin film barium titanate (BTO)-on-insulator, where off diagonal Pockels coefficients are exploited. The device achieves a maximum power conversion of around 30% and can be switched on or off through an applied voltage. It adds a different polarization rotation scheme to the active photonics family and achieves a TM output extinction ratio of 26.1 dB in the device with a TE input. The estimated r(51) value in the BTO thin film is around 600 pm/V.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Gongli Xiao, Sitong Zhou, Hongyan Yang, Zhixiong Lin, Haiou Li, Xingpeng Liu, Zanhui Chen, Tangyou Sun, Peihua Wangyang, Jianqing Li
Summary: In this study, a graphene metasurface-based and multifunctional polarization beam splitter that is dynamically tunable was proposed. The unique structure of the splitter enables triple plasma-induced transparency (PIT), and synchronous or asynchronous six-mode electro-optical switching modulation can be achieved by modifying the Fermi levels of graphene. Furthermore, by varying the polarization angle, a polarization-sensitive, tunable polarization beam splitter was realized.
Article
Optics
Kuo -Fang Chung, Yuan -Ting Shih, Yi-Ren Ma, Tien -Tsorng Shih, Ding -Wei Huang
Summary: A broadband and ultra-compact polarization splitter-rotator based on a diagonally overlapped bi-layer architecture and an asymmetrical directional coupler is proposed. By optimizing the structure and leveraging supermode theory, it achieves broadband performance and ultra-compact integration, and the fabrication tolerances are analyzed.
Article
Optics
Qifeng Wang, Jinbiao Xiao
Summary: This paper proposes a polarization rotator based on a laterally asymmetric rib waveguide by depositing a layer of silicon nitride dielectric material on one side. The polarization rotation region length is 15.77 μm, and the polarization extinction ratio, insertion loss, and polarization conversion efficiency are 38.57/68.95, 0.2/0.22 dB, and 99.99%/almost 100%, respectively, for the TE0 and TM0 modes at a 1.55 μm wavelength. The operation bandwidth is around 120 nm for the TE0 mode and TM0 mode when certain conditions are met.
Article
Engineering, Electrical & Electronic
Haozhi Luo, Zhiyan Chen, Hao Li, Lifeng Chen, Ya Han, Zhongjin Lin, Siyuan Yu, Xinlun Cai
Summary: The high-performance polarization splitter-rotator based on the lithium niobate-on-insulator platform demonstrates the separation of two injecting modes with orthogonal polarization states, while rotating the TM polarization state to the TE polarization state simultaneously. The designed device is fabricated in a single-step etching process, providing an extinction ratio of 20 dB over an 80 nm wavelength range and insertion loss of less than 0.65 dB for both TE0 and TM0 modes launched.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Vladimir A. Lenets, Sergei A. Kuznetsov, Andrey D. Sayanskiy, Pavel A. Lazorskiy, Juan D. Baena, Stanislav B. Glybovski
Summary: In this study, a novel approach for designing circular-polarization beam splitters using single-layer self-complementary metasurfaces is proposed and experimentally demonstrated, achieving compact and efficient operation at a specific frequency.
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
(2021)
