{"title":"Realization of nonvolatile polarization switch based on right-angle Sb2S3 embedded in 4H-SiC waveguide","authors":"Danfeng Zhu, Yaling Wang, Dingnan Deng, Junbo Chen, Shaobin Qiu","doi":"10.1016/j.optlastec.2024.111826","DOIUrl":null,"url":null,"abstract":"<div><p>A nonvolatile polarization switch is proposed numerically assisted by right-angle Sb<sub>2</sub>S<sub>3</sub> inlaid in a strip 4H-SiC waveguide. The polarization of incident light can be engineered by the phase states of Sb<sub>2</sub>S<sub>3</sub>. When the Sb<sub>2</sub>S<sub>3</sub> is crystalline, a TE0-TM0 polarization conversion is achieved with insertion loss (IL) of 0.22 dB and polarization conversion efficiency (PCE) of 98.36 % at the wavelength of 1550 nm. As long as the Sb<sub>2</sub>S<sub>3</sub> is switched to the amorphous state, the polarization conversion effect becomes negligible with IL < 0.014 dB and PCE < 3.16 % across 1500–1600 nm waveband. Moreover, the robustness analysis demonstrates that the proposed structure maintains its functionality within ± 10 nm deviations of Δ<em>h</em>, Δ<em>w</em>, Δ<em>l</em>, and Δ<em>d</em>. The low-loss Sb<sub>2</sub>S<sub>3</sub>-assisted polarization switch offers a novel methodology for nonvolatile switching to programmable integrated optics, which can be deployed in polarization manipulation and neuromorphic optical computing.</p></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"181 ","pages":"Article 111826"},"PeriodicalIF":4.6000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224012842","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
A nonvolatile polarization switch is proposed numerically assisted by right-angle Sb2S3 inlaid in a strip 4H-SiC waveguide. The polarization of incident light can be engineered by the phase states of Sb2S3. When the Sb2S3 is crystalline, a TE0-TM0 polarization conversion is achieved with insertion loss (IL) of 0.22 dB and polarization conversion efficiency (PCE) of 98.36 % at the wavelength of 1550 nm. As long as the Sb2S3 is switched to the amorphous state, the polarization conversion effect becomes negligible with IL < 0.014 dB and PCE < 3.16 % across 1500–1600 nm waveband. Moreover, the robustness analysis demonstrates that the proposed structure maintains its functionality within ± 10 nm deviations of Δh, Δw, Δl, and Δd. The low-loss Sb2S3-assisted polarization switch offers a novel methodology for nonvolatile switching to programmable integrated optics, which can be deployed in polarization manipulation and neuromorphic optical computing.
期刊介绍:
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems