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Article
Optics
Chunlei Sun et al.
Summary: This article introduces a micro-spectrometer that utilizes a single tunable microdisk resonator (MDR). By leveraging the wavelength and temperature-dependent response matrix, unknown spectra can be reconstructed from their corresponding output light intensity vector. The fabricated device demonstrates high and medium resolution capabilities and can recover a wide variety of complex input spectra, showing the robustness of the spectral reconstruction approach. Moreover, this spectrometer can be easily scaled and configured to cover desired spectral ranges.
LASER & PHOTONICS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Hongnan Xu et al.
Summary: This article introduces a new design strategy for optical spectrometers, which utilizes both temporal and spatial decorrelations to achieve ultra-high resolution and ultrabroad bandwidth. The experimental results demonstrate the potential of this design strategy for various applications due to its compact size and high performance.
Article
Nanoscience & Nanotechnology
Yuan Li et al.
Summary: A novel integrated photonic network was proposed and experimentally demonstrated to achieve high-resolution spectral reconstruction in a miniaturized spectrometer.
Article
Optics
Hongnan Xu et al.
Summary: This paper presents a spectrometer design that surpasses the resolution-bandwidth limit, by tailoring the dispersion of mode splitting in a photonic molecule to identify spectral information at different free-spectral ranges (FSRs). Experimental results demonstrate that this approach can resolve arbitrary spectra with discrete, continuous, or hybrid features.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Optics
Zhong Jin Lin et al.
Summary: Based on silicon photonic integrated circuit technology, we proposed and demonstrated an on-chip speckle spectrometer consisting of a 15 x 15, 2D disordered microring lattice. The device achieved a spectral resolution better than 15 pm and an operating bandwidth larger than 40 nm. We also showed that the device can perform spectrum classification using machine learning algorithms based on speckle patterns, offering potential for fast and intelligent material and chemical analysis.
Article
Optics
Chunhui Yao et al.
Summary: This paper proposes a novel global sampling strategy with distributed filters to generate ultra-broadband pseudo-random spectral responses. The use of reconfigurable photonics enables the creation of diverse spectral responses and achieves high resolution and bandwidth-to-resolution ratio. The design also provides extra programmability features.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Optics
Qingqing Cen et al.
Summary: The wide application of optical spectroscopy calls for miniaturized spectrometers, but scalability, high-performance, low-cost, and small footprint are conflicting factors that limit practical application. This study proposes a compact spectrometer that satisfies all four advantages through the use of a fiber taper tip to generate complex leaky mode patterns within 1 mm length. The device provides effective operation in a wide spectral range and allows for hyperspectral imaging applications.
Article
Optics
Junjie Du et al.
Summary: This paper presents a chip-level spectrometer based on silicon on-chip digital Fourier transform, which provides a stable and cost-effective solution for spectral analysis. The chip consists of eight cascaded optical switches connected by delay waveguides, enabling the realization of 127 Mach-Zehnder interferometers with linearly increased optical path differences. A machine-learning regularization method is used for spectrum reconstruction, showing negligible reconstruction errors for both sparse and broadband optical spectra. The compact size, high scalability, and high signal-to-noise ratio make this method a promising candidate for miniaturized spectrometers.
Article
Optics
Jiahui Zhang et al.
Summary: An on-chip reconstruction spectrometer with a cascaded nanobeam design demonstrates high-resolution narrowband signal retrieval and dual peak characteristics. By expanding bandwidth and increasing signal range, the spectrometer shows superior performance and compactness.
Article
Optics
Zunyue Zhang et al.
Summary: In this study, a compact integrated scanning spectrometer is proposed, which utilizes a tunable micro-ring resonator and a single arrayed waveguide grating to achieve wide optical bandwidths and high spectral resolutions. The integrated spectrometer with germanium photodetectors demonstrates excellent performance.
PHOTONICS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Dan Yi et al.
Summary: In this paper, a fully integrated high-resolution and broadband two-stage spectrometer based on a multimode waveguide (MMW) is proposed and experimentally tested. The spectrometer utilizes MMW to enhance resolution and integrated photodiodes for a fully integrated solution. Experimental results show that the spectrometer has high spectral resolution and a large optical bandwidth, and can successfully reconstruct both sparse and continuous spectra.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Review
Optics
Ang Li et al.
Summary: The proliferation of Internet of Things has led to the miniaturization of spectrometers, but with lower technology readiness levels for manufacturing. This paper analyzes the key metrics for adopting miniaturized spectrometers and summarizes recent progress and solutions for addressing miniaturization challenges.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Chunlei Sun et al.
Summary: This study demonstrates a miniature spectrometer design based on a filter array, which enables high-resolution spectral acquisition over a broad wavelength range. The results show that by tuning the free spectral range of the filters and using multiple filter cells, a compact and high-resolution spectrometer design can be achieved.
Article
Nanoscience & Nanotechnology
Qifeng Qiao et al.
Summary: On-chip spectrometers based on silicon photonics offer a compact, energy-efficient, and cost-effective solution to biochemical spectroscopy and hyperspectral imaging. In this study, the researchers propose an on-chip computational spectrometer in the mid-infrared range using an MEMS-enabled silicon photonic integrated device, which features low power consumption, single-pixel detection, and multiplexing advantages.
Review
Optics
Yaocheng Shi et al.
Summary: Silicon photonic technology has made significant progress in recent years as an advanced platform for photonic integrated circuits. Devices such as optical modulators, photodetectors, (de)multiplexers, and heterogeneously integrated lasers have been developed and their performance even surpasses traditional III-V materials and photonic integrated circuit platforms, laying the foundation for large-scale photonic integration.
PHOTONICS RESEARCH
(2022)
Article
Multidisciplinary Sciences
Hoon Hahn Yoon et al.
Summary: This study presents a high-performance computational spectrometer based on a single van der Waals junction, which achieves high accuracy and resolution using an electrically tunable transport-mediated spectral response, providing unprecedented performance for miniaturized applications.
Article
Optics
Long Zhang et al.
Summary: A compact spectrometer on silicon with ultrahigh resolution and wide working window has been proposed and demonstrated. The on-chip spectrometer has a small footprint, is realized with simple processes, and achieves ultrahigh resolution and a large dynamic range. This high-performance on-chip spectrometer has great potential in applications such as gas sensing, food monitoring, and health analysis.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Optics
Ang Li et al.
Summary: An ultra-high resolution Fourier transform spectrometer realized in a silicon photonic platform is reported, which can handle broad band, narrow band, as well as a combination of both signals. The high resolution is achieved by utilizing multiple techniques such as a Michelson interferometer structure, hybrid waveguide design, optimized heater, and air trenches. A novel multiple interferometers approach is employed to further increase the optical path delay of the spectrometer, leading to higher resolution.
LASER & PHOTONICS REVIEWS
(2021)
Review
Multidisciplinary Sciences
Zongyin Yang et al.
Summary: Spectroscopic analysis is widely used in scientific research and industry, and the trend towards miniaturization is crucial for portability and in situ measurements. Advances in microspectrometer technology aim to achieve high performance and small footprint suitable for lab-on-a-chip systems, smartphones, and other consumer technologies, yet face challenges in improving spectral resolution as device dimensions shrink.
Article
Optics
Shaofan Yuan et al.
Summary: The single-photodetector spectrometer based on black phosphorus demonstrates excellent performance in the 2-9 µm wavelength range, with a compact footprint of 9 x 16 µm^2 and electrically reconfigurable nature. It is suitable for on-chip mid-infrared spectroscopy and spectral imaging, eliminating bulky interferometers and gratings.
Article
Multidisciplinary Sciences
Ang Li et al.
Summary: In this study, an ultra-compact single-shot spectrometer on silicon platform is presented for sparse spectrum reconstruction. It consists of 32 stratified waveguide filters with diverse transmission spectra for sampling the unknown spectrum of the input signal. The fabricated spectrometer demonstrates broad operating bandwidth and narrowband peaks that can be clearly resolved. Compact spectrometers with simple design can enable various applications in optical spectral bands.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Wisnu Hadibrata et al.
Summary: An innovative high-resolution compact spectrometer utilizing random scattering events in a disordered medium has been demonstrated, achieving a spectral resolution of 0.25 nm in the near-infrared regime. This compact spectrometer, with a small footprint of 30 x 12.8 µm², has great potential for various applications including on-chip spectrometer and sensing.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Zunyue Zhang et al.
Summary: The study presents and demonstrates a high-resolution integrated speckle spectrometer with a compact design. By using grating lines to increase effective optical path lengths, the spectrometer achieves compressive sensing for sparse spectra and shows great potential for a wide range of applications.
LASER & PHOTONICS REVIEWS
(2021)
Review
Instruments & Instrumentation
Jianxin Jia et al.
INFRARED PHYSICS & TECHNOLOGY
(2020)
Article
Optics
Uttam Paudel et al.
Review
Biotechnology & Applied Microbiology
Jayoung Kim et al.
NATURE BIOTECHNOLOGY
(2019)
Article
Multidisciplinary Sciences
S. N. Zheng et al.
NATURE COMMUNICATIONS
(2019)
Article
Engineering, Electrical & Electronic
Shaonan Zheng et al.
IEEE PHOTONICS JOURNAL
(2019)
Article
Multidisciplinary Sciences
Derek M. Kita et al.
NATURE COMMUNICATIONS
(2018)
Article
Optics
Xiaomin Nie et al.
Article
Optics
Minyue Yang et al.
Article
Multidisciplinary Sciences
Molly Piels et al.
SCIENTIFIC REPORTS
(2017)
Article
Optics
Brandon Redding et al.
Article
Biochemical Research Methods
E. Ryckeboer et al.
BIOMEDICAL OPTICS EXPRESS
(2014)
Article
Optics
Giuseppe Calafiore et al.
LIGHT-SCIENCE & APPLICATIONS
(2014)
Article
Optics
Brandon Redding et al.
Article
Optics
Aitor V. Velasco et al.
Article
Engineering, Biomedical
Woonggyu Jung et al.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2011)
Article
Biochemical Research Methods
Jeremy Adler et al.
Article
Optics
Daoxin Dai et al.
OPTICS COMMUNICATIONS
(2008)
Article
Optics
Hiroshi Fukuda et al.
Article
Optics
P. Cheben et al.
