Fabrication tolerant and broadband polarization splitter-rotator based on adiabatic mode evolution on thin-film lithium niobate

被引：23

作者：

Gan, Ranfeng ^{[1
]}

Qi, Lu ^{[1
]}

Ruan, Ziliang ^{[2
]}

Liu, Jie ^{[1
]}

Guo, Changjian ^{[1
,3
]}

Chen, Kaixuan ^{[1
,3
]}

Liu, Liu ^{[2
]}

机构：

[1] South China Normal Univ, South China Acad Adv Optoelect, Higher Educ Mega Ctr, Guangdong Prov Key Lab Opt Informat Mat & Technol, Sci Bldg 5, Guangzhou 510006, Peoples R China

[2] Zhejiang Univ, Coll Opt Sci & Engn, Int Res Ctr Adv Photon, State Key Lab Modern Opt Instrumentat, East Bldg 5,Zijingang Campus, Hangzhou 310058, Peoples R China

[3] South China Normal Univ, Natl Ctr Int Res Green Optoelect, Guangzhou 510006, Peoples R China

来源：

OPTICS LETTERS | 2022年 / 47卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Adiabatic mode - Extinction ratios - Fabricated device - Lithium niobate - Measured results - On chips - Polarization splitters - Rotator device - Thin-films - Transmission data rate;

D O I：

10.1364/OL.470216

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A polarization splitter-rotator device can facilitate on-chip polarization-division multiplexing to enhance the trans-mission data rate. Here, we propose and experimentally demonstrate a polarization splitter-rotator based on adi-abatic mode evolution on the thin-film lithium niobate platform. The measured results for a fabricated device show low insertion losses of <-0.5 dB and large extinction ratios of >20 dB over the 110-nm band. Large fabrication toler-ance is also demonstrated with extinction ratios of >15 dB in the wavelength range of 1465-1630 nm for a waveguide width variation of 80 nm. (C) 2022 Optica Publishing Group

引用

页码：5200 / 5203

页数：4

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