[17p-A25-2~11] 4.2 Photonics Devices, Photonic Integrated Circuit and Silicon Photonics

15:15 〜 15:30英語発表

[17p-A25-3] Performant Thin-Film Lithium Niobate Polarizer with an S-bend waveguide

〇(M2)Fengyang Jin^1,3, Tingting Lang², Xiaowei Guan³ (1.China Jiliang Univ., 2.ZJ Sci.&Tech Univ., 3.Jiaxing Inst. ZJU)

キーワード：

thin-film lithium niobate、photonic integrated circuits

Thin-film lithium niobate is currently emerging as a popular photonic integration circuit (PIC) platform for its versatile material superiorities. Diverse performant devices have been demonstrated in the TFLN PICs, such as modulators and passive devices. While polarizer is a fundamental building block for the PICs, it is not a trivial to realize it in the TFLN PICs attributed to the birefringence of the material and the temporarily unavoidable slant sidewalls of the TFLN waveguide. In this work, we demonstrate TFLN polarizers using an S-bend waveguide where TM modes are leaked out, exhibiting ERs > 40 dB and losses <1 dB.