Results 21 to 30 of about 136,205 (300)

Versatile Tunning of Compact Microring Waveguide Resonator Based on Lithium Niobate Thin Films

Photonics, 2023
With the advancement of modulation technology and the requirement for device miniaturization and integration, lithium niobate on insulator (LNOI) can be a versatile platform for this pursuit, as it can confine the transmitted light at the nanoscale ...
Qijing Lin, Yuanzhi Hu, Yang Li, Huajiang Chen, Runhao Liu, Gang Tian, Wentao Qiu, Tiefeng Yang, Heyuan Guan, Huihui Lu   +9 more
doaj   +1 more source

On-chip silicon electro-optical modulator with ultra-high extinction ratio for fiber-optic distributed acoustic sensing

Nature Communications, 2023
Ultra-high extinction ratio (ER) optical modulation is crucial for achieving high-performance fiber-optic distributed acoustic sensing (DAS) for various applications.
Zhuo Cheng, Xiaoqian Shu, Lingmei Ma, Bigeng Chen, Caiyun Li, Chunlei Sun, Maoliang Wei, Shaoliang Yu, Lan Li, Hongtao Lin, Yunjiang Rao   +10 more
doaj   +1 more source

Linking Distributed and Integrated Fiber‐Optic Sensing

Geophysical Research Letters, 2022
AbstractDistributed Acoustic Sensing (DAS) has become a popular method of observing seismic wavefields: backscattered pulses of light reveal strains or strain rates at any location along a fiber‐optic cable. In contrast, a few newer systems transmit light through a cable and collect integrated phase delays over the entire cable, such as the Microwave ...
Daniel C. Bowden, Andreas Fichtner, Thomas Nikas, Adonis Bogris, Christos Simos, Krystyna Smolinski, Maria Koroni, Konstantinos Lentas, Iraklis Simos, Nikolaos S. Melis   +9 more
openaire   +4 more sources

Rare Earth-Doped Microfiber Bragg Grating Refractive Index Sensor With Self-Photothermal Manipulation

IEEE Photonics Journal, 2021
We demonstrate a microfiber Bragg grating as the reflective refractometer with the function of self-photoheating. The rare earth-doped fiber provides not only the photosensitivity to the UV modulation but also the effective pump laser absorption and ...
Yongkang Zhang, Yi Yin, Jiexuan Cai, Xueting Long, Zhiyuan Xu, Yang Ran, Bai-Ou Guan   +6 more
doaj   +1 more source

Optical sensing by exposed core fiber using self-written waveguide [PDF]

, 2017
Recently, the importance of the optical fiber is increasing particularly in sensing application. Thus, this paper proposes optical sensing by exposed core fiber technology using Self-Written Waveguide (SWW) method. SWW method is fabrication of an optical
Ahmad, Fauzan, Ambran, Sumiaty, Baharudin, Nurul Atiqah, Fujikawa, Chiemi, Ibrahim, Amalina Athira, Mahdi, Mohd Adzir, Mikami, Osamu, Yaacob, Mohd Hanif   +7 more
core   +1 more source

Short cavity DFB fiber laser based vector hydrophone for low frequency signal detection

Photonic Sensors, 2017
A short cavity distributed feedback (DFB) fiber laser is used for low frequency acoustic signal detection. Three DFB fiber lasers with different central wavelengths are chained together to make three-element vector hydrophone with proper sensitivity ...
Xiaolei Zhang, Faxiang Zhang, Shaodong Jiang, Li Min, Ming Li, Gangding Peng, Jiasheng Ni, Chang Wang   +7 more
doaj   +1 more source

Quantitative sensitivity analysis of surface attached optical fiber strain sensor [PDF]

, 2014
Optical fiber strain sensors, in particular, the fiber Bragg grating (FBG) type, are widely applied in different applications. The most common installation method is surface-attached.
Wan, KT
core   +1 more source

Resonance-enhanced all-optical modulation of WSe2-based micro-resonator

Nanophotonics, 2019
Two-dimensional material tungsten diselenide (WSe2) nanosheets are coated on a microfibre knot resonator (MKR) to achieve an all-optical power modulation functionality.
Zhang Zijian, Chen Guowei, Yang Mingyu, Ou Yunyao, Luo Luqi, Lu Dongqin, Zhang Enze, Guan Heyuan, Lu Huihui, Zhu Wenguo, Yu Jianhui, Dong Jiangli, Qiu Wentao, Chen Zhe, Peng Gangding   +14 more
doaj   +1 more source

Parity-time symmetry in wavelength space within a single spatial resonator

Nature Communications, 2020
Most conventional PT-symmetric systems contain two physically separated modes. Here the authors proposed a PT-symmetric microwave optoelectronic oscillator, where the gain and loss modes are confined in a single spatial resonator, resulting in an ...
Jiejun Zhang, Lingzhi Li, Guangying Wang, Xinhuan Feng, Bai-Ou Guan, Jianping Yao   +5 more
doaj   +1 more source

MoS₂-Nanoflower and Nanodiamond Co-Engineered Surface Plasmon Resonance for Biosensing

Biosensors, 2023
Surface plasmon resonance (SPR) based sensors play an important role in the biological and medical fields, and improving the sensitivity is a goal that has always been pursued.
Yaofei Chen, Xin Xiong, Yu Chen, Lei Chen, Guishi Liu, Wei Xiao, Jifu Shi, Zhe Chen, Yunhan Luo   +8 more
doaj   +1 more source