Design of Suspended Slot Racetrack Microring Refractive Index Sensor Based on Polymer Nanocomposite.

Xihan Wu, Jiajun Wang, Jiachen Han, Yuqi Xie, Xuyang Ge, Jianzhi Liao, Yunji Yi

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Article in Polymers, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Xihan WuCollege of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China.

Jiajun WangCollege of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China.

Jiachen HanCollege of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

Yuqi XieCollege of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

Xuyang GeCollege of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

Jianzhi LiaoCollege of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

Yunji YiCollege of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China.ORCID 0000-0002-8471-4689

Funding

the College Students' Innovation and Entrepreneurship Competition of SZTU S202214655001the Guangdong Education Department Major Focus Areas for Universities 2022ZDZX1024the Guangdong Science and Technology Innovation Strategy Special Fund pdjh2023b0467the Industrialization R&D projects of SZTU 20221063010032

6 · The paper itself

Abstract

Recently, polymer nanocomposites have attracted great interest due to their remarkable characteristics of high performance and enabling production of low-cost devices. This article explores the reflective index sensing application of the polymer nanocomposite IOC-133, which is a TiOx/polymer nanocomposite with a reflective index between 1.8 and 1.9. Considering the material properties of high reflective index, low absorption loss, and compatibility with nanoimprint lithography, a microring-based reflective index sensor with a suspended slot waveguide structure is proposed. We combined the sensing mechanism of slot waveguides with high reflective index polymer nanocomposites and designed the suspended structure to address the problem of decreasing sensitivity caused by residual layers. The sensing device was adopted as a microring resonator, which is conducive to large-scale integration. The finite-difference time-domain (FDTD) method was employed to analyze the effects of several key parameters. The results showed that the racetrack microring sensor we propose can achieve a high sensitivity of 436 nm/RIU (Refractive Index Units), about six times higher than the microring sensor with a ridge waveguide. The Q factor of the microring reaches 1.42 × 10

Indexed as

integrated optics devicesmicroring resonatorpolymer nanocompositesslot waveguide

Identifiers

PMID37177257

DOI10.3390/polym15092113

PMCPMC10180560

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.