[1] R SOREF. The Past, Present, and Future of Silicon Photonics. IEEE Journal of Selected Topics in Quantum Electronics, 12, 1678-1687(2006).

[2] V STOJANOVIC, R RAM, M POPOVIC et al. Monolithic silicon-photonic platforms in state-of-the-art CMOS SOI processes. Optics Express, 26, 13106(2018).

[3] C MANOLATOU, S JOHNSON, S FAN et al. High-Density Integrated Optics. Journal of Lightwave Technology, 17, 1682-1692(1999).

[4] T BARWICZ, M R WATTS, POPOVI et al. Polarization-transparent microphotonic devices in the strong confinement limit. Nature Photonics, 1, 57-60(2006).

[5] J HE, L JIAO, H CUI et al. A polarization-independent terahertz modulator based on metamaterials with symmetric structure; proceedings of the Infrared, Millimeter-Wave, and Terahertz Technologies III, F, 2014(2014).

[6] M ABDELSALAM, M SWILLAM, A MAHMOUD. Polarization-independent dielectric metasurface for mid-infrared applications; proceedings of the High Contrast Metastructures VII, F, 2018(2018).

[7] H CONRADI, D DE FELIPE, M KLEINERT et al. Hybrid integration of a polarization independent optical circulator; proceedings of the Proc SPIE, F, 2020(2020).

[8] H FUKUDA, K YAMADA, T TSUCHIZAWA et al. Ultrasmall polarization splitter based on silicon wire waveguides. Optics Express, 14, 12401-12408(2007).

[9] H FUKUDA, K YAMADA, T TSUCHIZAWA et al. Silicon photonic circuit with polarization diversity. Optics Express, 16, 4872-4880(2008).

[10] L GAO, Y HUO, J S HARRIS et al. Ultra-Compact and Low-Loss Polarization Rotator Based on Asymmetric Hybrid Plasmonic Waveguide. IEEE Photonics Technology Letters, 25, 2081-2084(2013).

[11] L LIU, Y DING, K YVIND et al. Silicon-on-insulator polarization splitting and rotating device for polarization diversity circuits. Optics Express, 19, 12646-12651(2011).

[12] Y ZHAO, C QIU, A WU et al. Broadband Polarization Splitter-Rotator and the Application in WDM Receiver. IEEE Photonics Journal, 11, 1-10(2019).

[13] P DONG, C XIE, L CHEN et al. 112-Gb/s monolithic PDM-QPSK modulator in silicon. Optics Express, 20, B624-629(2012).

[14] H JI, X ZHOU, C SUN et al. Polarization-diversity receiver using remotely delivered local oscillator without optical polarization control. Optics Express, 28, 22882-22890(2020).

[15] L ZHANG, S YANG, G ZHANG et al. Broadband 2×2 Polarization Splitter-Rotator Based on an Adiabatic Asymmetric Directional Coupler on the Lithium-Niobate-on-Insulator; proceedings of the Asia Communications and Photonics Conference, F, 2020(2020).

[16] L SOCCI, V SORIANELLO, M ROMAGNOLI. 300 nm bandwidth adiabatic SOI polarization splitter-rotators exploiting continuous symmetry breaking. Optics Express, 23, 19261-19271(2015).

[17] K YU, L WANG, W WU et al. Demonstration of an on-chip broadband polarization splitter and rotator using counter-tapered coupler. Optics Communications, 431, 58-62(2019).

[18] H GUAN, A NOVACK, M STRESHINSKY et al. CMOS-compatible highly efficient polarization splitter and rotator based on a double-etched directional coupler. Optics Express, 22, 2489-2496(2014).

[19] X TU, M LI, J XING et al. Compact Polarization Splitter-Rotator Based on an Asymmetric Bi-level Lateral Taper in an Adiabatic Directional Coupler. Journal of Lightwave Technology, 34, 1-1(2015).

[20] C XIE, X ZOU, P LI et al. Ultracompact silicon polarization splitter-rotator using a dual-etched and tapered coupler. Applied Optics, 59, 9540-9547(2020).

[21] Y XIONG, J WANGüEMERT-PéREZ, D XU et al. Polarization splitter and rotator with subwavelength grating for enhanced fabrication tolerance. Optics Letters, 39, 6931-6934(2014).

[22] C XIE, X ZOU, F ZOU et al. High-performance ultra-compact polarization splitter-rotators based on dual-etching and tapered asymmetrical directional coupler. Chinese Optics Letters, 19, 121301(2021).

[23] K TAN, Y HUANG, LO G-Q et al. Compact highly-efficient polarization splitter and rotator based on 90° bends. Optics Express, 24, 14506-14512(2016).

[24] W JIANG. Fabrication-Tolerant Polarization Splitter and Rotator Based on Slanted Silicon Waveguides. IEEE Photonics Technology Letters, 30, 1-1(2018).

[25] D DAI, J BOWERS. Novel concept for ultracompact polarization splitter-rotator based on silicon nanowires. Optics Express, 19, 10940-10949(2011).

[26] H GUAN, A NOVACK, M STRESHINSKY et al. High-Efficiency Low-Crosstalk 1310-nm Polarization Splitter and Rotator. IEEE Photonics Technology Letters, 26, 925-928(2014).

[27] D GUO, T CHU. Broadband and low-crosstalk polarization splitter-rotator with optimized tapers. OSA Continuum, 1, 841-850(2018).

[28] B ZHANG, Y LI, F QIANG et al. Switchable Polarization Beam Splitter Based on GST-on-Silicon Waveguides. IEEE Photonics Journal, 12, 1-1(2020).

[29] X DAI, Q LU, W GUO. Fabrication-Tolerant Polarization Rotator-Splitter based on Silicon Nitride Platform; proceedings of the Optical Fiber Communication Conference, F, 2021(2021).

[30] Y DING, OU H, C PEUCHERET. Wideband polarization splitter and rotator with large fabrication tolerance and simple fabrication process. Optics Letters, 38, 1227-1229(2013).

[31] J WANG, B NIU, Z SHENG et al. Novel ultra-broadband polarization splitter-rotator based on mode-evolution tapers and a mode-sorting asymmetric Y-junction. Optics Express, 22, 13565-13571(2014).

[32] C SUN, G CHEN, X ZHANG. A Low Crosstalk and Broadband Polarization Rotator and Splitter Based on Adiabatic Couplers. IEEE Photonics Technology Letters, 28, 1-1(2016).

[33] S KEYVANINIA, H BOERMA, M WöSSNER et al. Highly efficient passive InP polarization rotator-splitter. Optics Express, 27, 25872-25881(2019).

[34] M MA, A PARK, Y WANG et al. Sub-wavelength grating-assisted polarization splitter-rotators for silicon-on-insulator platforms. Optics Express, 27, 17581-17591(2019).

[35] M PERESTJUK, H BOERMA, A SCHINDLER et al. Inverse-Designed InP-Based Polarization Rotator-Splitter; proceedings of the Optical Fiber Communication Conference, F, 2021(2021).

[36] Y BUSTAMANTE, G FARIAS, H ANDRADE et al. Demonstration of a Silicon Polarization Splitter and Rotator based on a Bow-tie Structure. Photonics and Nanostructures - Fundamentals and Applications, 45, 100921(2021).

[37] C DENG, M LU, L HUANG et al. Reconfigurable and low-power consumption polarization rotating beam splitter with EIT-like effect based on SOI ridge waveguide. Optics Communications, 495, 127054(2021).

[38] M ITO, T FUKUI, T TANEMURA et al. Compact symmetric polarization rotator-splitter on InP. Optics Express, 30, 4179-4188(2022).

[39] Y LIU, S WANG, Y WANG et al. Subwavelength polarization splitter–rotator with ultra-compact footprint. Optics Letters, 44, 4495-4498(2019).

[40] L QIN, Y HUANG, F XIA et al. 5 nm Nanogap Electrodes and Arrays by a Super-resolution Laser Lithography. Nano Letters, 20, 4916-4923(2020).

[41] S K SELVARAJA, W BOGAERTS, P DUMON et al. Subnanometer Linewidth Uniformity in Silicon Nanophotonic Waveguide Devices Using CMOS Fabrication Technology. IEEE Journal of Selected Topics in Quantum Electronics, 16, 316-324(2010).