Integrated Photonics and Optoelectronics, 3rd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 1303

Special Issue Editor

School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
Interests: chip-integrated optoelectronic devices; nanowire photonics; nonlinear optics; all-optical computing; optical logic gates; micro- and nanofabrication process; MEMS sensors
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Special Issue Information

Dear Colleagues,

Integrated photonic and optoelectronic technologies are fundamental for creating devices that are much smaller, more functional and highly integrated and that consume less power. With the development of advanced materials and nanofabrication techniques, the last two decades have witnessed tremendous progress in integrated photonic and optoelectronic devices, such as graphene-based ultrafast optical detectors, Si-based ultra-low-loss waveguides, Brillouin integrated lasers, lithium-niobite-film integrated high-speed modulators, and the emerging new area of artificial intelligence and quantum computing. This Special Issue, which will be published in Micromachines, aims to present original state-of-the-art research papers and review articles on active and passive integrated photonic and optoelectronic devices, the design and simulation of the integration process, micro- and nanofabrication techniques, and related advanced functional nanomaterials in integrated devices.

Dr. He Yang
Guest Editor

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Keywords

  • active and passive photonic devices 
  • nanoscale optical modulators and photodetectors 
  • chip-integrated single-photon generation and detection 
  • photonic interfaced hybrid quantum system 
  • photonic computing and photonic quantum computing 
  • advanced nanomaterial for photonic structure 
  • on-chip mid-IR photonics 
  • micro- and nanofabrication techniques

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Published Papers (2 papers)

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Research

14 pages, 1235 KB  
Article
Second Harmonic Generation in Modal Phase-Matched Thin-Film Lithium Tantalate Ridge Waveguide
by Xiuquan Zhang, Haoyang Du, Dawei Cao, Jialu Duan, Qian Wang, Zhenyu Li, Wen Hu, Guiyin Liu and Lei Wang
Micromachines 2026, 17(5), 551; https://doi.org/10.3390/mi17050551 - 29 Apr 2026
Viewed by 234
Abstract
We demonstrate efficient and thermally stable second-harmonic generation (SHG) in x-cut thin-film lithium tantalate (TFLT) ridge waveguides via modal phase matching (MPM). The experimental characterizations reveal a normalized conversion efficiency (NCE) of 17.2% W−1cm−2 in a 4 mm long [...] Read more.
We demonstrate efficient and thermally stable second-harmonic generation (SHG) in x-cut thin-film lithium tantalate (TFLT) ridge waveguides via modal phase matching (MPM). The experimental characterizations reveal a normalized conversion efficiency (NCE) of 17.2% W−1cm−2 in a 4 mm long waveguide. Notably, the device exhibits a temperature-dependent phase-matching wavelength slope of 0.007 nm/°C, which shows a two-orders-of-magnitude improvement in thermal stability over conventional periodically poled lithium niobate/lithium tantalate optical devices. Our work indicates that MPM in TFLT is an attractive strategy for integrated nonlinear optical applications, particularly for the on-chip frequency conversion of both classical and quantum light signals without on-chip domain-poling processes. Full article
(This article belongs to the Special Issue Integrated Photonics and Optoelectronics, 3rd Edition)
22 pages, 5354 KB  
Article
Enhanced Sensitivity in D-Shaped Optical Fiber SPR Sensor via Ag-α-Fe2O3 Grating
by Shuai Yuan, Bingyang Yuan and Jiu Deng
Micromachines 2026, 17(2), 183; https://doi.org/10.3390/mi17020183 - 29 Jan 2026
Cited by 2 | Viewed by 766
Abstract
The development of high-performance optical fiber sensors based on surface plasmon resonance (SPR) represents a significant advancement in precision detection technology, particularly for biomedical and environmental monitoring applications requiring real-time response and minimal sample consumption. This research conducts a systematic numerical investigation of [...] Read more.
The development of high-performance optical fiber sensors based on surface plasmon resonance (SPR) represents a significant advancement in precision detection technology, particularly for biomedical and environmental monitoring applications requiring real-time response and minimal sample consumption. This research conducts a systematic numerical investigation of a D-shaped fiber SPR sensor incorporating an optimized silver-hematite (Ag-α-Fe2O3) composite grating structure. Through comprehensive finite element simulations and parameter analysis, we demonstrate that controlling the silver layer thickness at 45 nm while maintaining the α-Fe2O3 thickness at 12 nm achieves optimal electric field confinement. The grating gap width optimization at 30 nm enables maximum sensitivity through enhanced localized surface plasmon resonance effects, while the residual cladding thickness of 0.5 μm provides the ideal balance between detection accuracy and sensitivity. The research establishes fundamental design principles for high-performance SPR sensors by elucidating the critical relationships between geometric parameters and sensing characteristics, providing valuable insights for developing next-generation sensors with enhanced performance for advanced sensing applications in environmental monitoring and medical diagnostics. Full article
(This article belongs to the Special Issue Integrated Photonics and Optoelectronics, 3rd Edition)
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