Journals > > Topics > Special Issue on the 20th Anniversary of Wuhan National Laboratory for Optoelectronics (WNLO)
Special Issue on the 20th Anniversary of Wuhan National Laboratory for Optoelectronics (WNLO)|5 Article(s)
Photonic integrated optical phased arrays and their applications [Invited]
Zhipeng Ma, Yuanjian Wan, Hang Liang, Yao Fu, Guobiao Tang, Xiaoyang Zhao, Shiao Zhao, Haibo Kuang, Yu Zhang, and Jian Wang
In recent years, optical phased arrays (OPAs) have attracted great interest for their potential applications in light detection and ranging (LiDAR), free-space optical communications (FSOs), holography, and so on. Photonic integrated circuits (PICs) provide solutions for further reducing the size, weight, power, and cost of OPAs. In this paper, we review the recent development of photonic integrated OPAs. We summarize the typical architecture of the integrated OPAs and their performance. We analyze the key components of OPAs and evaluate the figure of merit for OPAs. Various applications in LiDAR, FSO, imaging, biomedical sensing, and specialized beam generation are introduced. In recent years, optical phased arrays (OPAs) have attracted great interest for their potential applications in light detection and ranging (LiDAR), free-space optical communications (FSOs), holography, and so on. Photonic integrated circuits (PICs) provide solutions for further reducing the size, weight, power, and cost of OPAs. In this paper, we review the recent development of photonic integrated OPAs. We summarize the typical architecture of the integrated OPAs and their performance. We analyze the key components of OPAs and evaluate the figure of merit for OPAs. Various applications in LiDAR, FSO, imaging, biomedical sensing, and specialized beam generation are introduced.
Chinese Optics Letters
- Publication Date: Mar. 01, 2024
- Vol. 22, Issue 2, 020041 (2024)
On-chip stimulated Brillouin scattering [Invited]
Linfeng Yu, Chukun Huang, Ming Cheng, Kang Wang, Haotian Shi, Qiang Huang, and Junqiang Sun
On-chip stimulated Brillouin scattering (SBS) has attracted extensive attention by introducing acousto-optic coupling interactions in all-optical signal processing systems. A series of chip-level applications such as Brillouin lasers, amplifiers, gyroscopes, filters, and nonreciprocal devices are realized based on Brillouin acousto-optic interaction. Here, we first introduce the fundamental principle of SBS in integrated photonics and a method for calculating Brillouin gain; then we illustrate the Brillouin effect on different material platforms with diverse applications. Finally, we make a concise conclusion and offer prospects on the future developments of on-chip SBS. On-chip stimulated Brillouin scattering (SBS) has attracted extensive attention by introducing acousto-optic coupling interactions in all-optical signal processing systems. A series of chip-level applications such as Brillouin lasers, amplifiers, gyroscopes, filters, and nonreciprocal devices are realized based on Brillouin acousto-optic interaction. Here, we first introduce the fundamental principle of SBS in integrated photonics and a method for calculating Brillouin gain; then we illustrate the Brillouin effect on different material platforms with diverse applications. Finally, we make a concise conclusion and offer prospects on the future developments of on-chip SBS.
Chinese Optics Letters
- Publication Date: Feb. 29, 2024
- Vol. 22, Issue 2, 020031 (2024)
Current status and development of CMOS SiPM for scintillator-based radiation detectors toward all-digital sensors [Invited]
Nicola D’Ascenzo, Wentao Hu, Hui Lao, Yuexuan Hua, Bo Zhang, Lei Fang, Daoming Xi, Rui Zheng, Ao Qiu, Emanuele Antonecchia, Yiqing Ling, Yuqing Liu, Yan Li, Hang Yu, Peng Xiao, and Qingguo Xie
Modern scintillator-based radiation detectors require silicon photomultipliers (SiPMs) with photon detection efficiency higher than 40% at 420 nm, possibly extended to the vacuum ultraviolet (VUV) region, single-photon time resolution (SPTR) < 100 ps, and dark count rate (DCR) < 150 kcps/mm2. To enable single-photon time stamping, digital electronics and sensitive microcells need to be integrated in the same CMOS substrate, with a readout frame rate higher than 5 MHz for arrays extending over a total area up to 4 mm × 4 mm. This is challenging due to the increasing doping concentrations at low CMOS scales, deep-level carrier generation in shallow trench isolation fabrication, and power consumption, among others. The advances at 350 and 110 nm CMOS nodes are benchmarked against available SiPMs obtained in CMOS and commercial customized technologies. The concept of digital multithreshold SiPMs with a single microcell readout is finally reported, proposing a possible direction toward fully digital scintillator-based radiation detectors. Modern scintillator-based radiation detectors require silicon photomultipliers (SiPMs) with photon detection efficiency higher than 40% at 420 nm, possibly extended to the vacuum ultraviolet (VUV) region, single-photon time resolution (SPTR) < 100 ps, and dark count rate (DCR) < 150 kcps/mm2. To enable single-photon time stamping, digital electronics and sensitive microcells need to be integrated in the same CMOS substrate, with a readout frame rate higher than 5 MHz for arrays extending over a total area up to 4 mm × 4 mm. This is challenging due to the increasing doping concentrations at low CMOS scales, deep-level carrier generation in shallow trench isolation fabrication, and power consumption, among others. The advances at 350 and 110 nm CMOS nodes are benchmarked against available SiPMs obtained in CMOS and commercial customized technologies. The concept of digital multithreshold SiPMs with a single microcell readout is finally reported, proposing a possible direction toward fully digital scintillator-based radiation detectors.
Chinese Optics Letters
- Publication Date: Mar. 01, 2024
- Vol. 22, Issue 2, 020021 (2024)
Optical vortex array: generation and applications [Invited]
Jing Du, Zhiqiang Quan, Kang Li, and Jian Wang
Optical vortex arrays, with their unique wavefront structures, find extensive applications in fields such as optical communications, trapping, imaging, metrology, and quantum. The methods used to generate these vortex beam arrays are crucial for their applications. In this review, we begin with introducing the fundamental concepts of optical vortex beams. Subsequently, we present three methods for generating them, including diffractive optical elements, metasurfaces, and integrated optical devices. We then explore the applications of optical vortex beam arrays in five different domains. Finally, we conclude with a summary and outlook for the research on optical vortex beam arrays. Optical vortex arrays, with their unique wavefront structures, find extensive applications in fields such as optical communications, trapping, imaging, metrology, and quantum. The methods used to generate these vortex beam arrays are crucial for their applications. In this review, we begin with introducing the fundamental concepts of optical vortex beams. Subsequently, we present three methods for generating them, including diffractive optical elements, metasurfaces, and integrated optical devices. We then explore the applications of optical vortex beam arrays in five different domains. Finally, we conclude with a summary and outlook for the research on optical vortex beam arrays.
Chinese Optics Letters
- Publication Date: Mar. 01, 2024
- Vol. 22, Issue 2, 020011 (2024)
Editorial of special issue on the 20th anniversary of Wuhan National Laboratory for Optoelectronics (WNLO)
[in Chinese]
Chinese Optics Letters
- Publication Date: Feb. 29, 2024
- Vol. 22, Issue 2, 020001 (2024)
Topics
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20