supported by the National Key Research and Development Program of China(No.2017YFE0104200);the Beijing Natural Science Foundation(No.JQ18023);the National Natural Science Foundation of China(Nos.81421004 and 61971447);the National Key Instrumentation Development Project of China(No.2013YQ030651)。
We present a novel noncontact ultrasound(US)and photoacoustic imaging(PAI)system,overcoming the limitations of traditional coupling media.Using a long coherent length laser,we employ a homodyne free-space Mach-Zehnder...
supported by the National Key Research and Development Program of China(Grant No.2019YFB1803505);the National Natural Science Foundation of China(Grant Nos.U2001601,62175039,and 61925501);the Science and Technology Project of Guangzhou(Grant No.201904010243);Major Special Projects in Guangdong Province(Grant No.2018B010114002);the Engineering Research Center of Digital Imaging and Display,Ministry of Education,Soochow University(Grant No.SDGC2133);the Program for Guangdong Introducing Innovative and Enterpreneurial Teams.
In this paper,a Bragg reflector is proposed by placing periodic metallic gratings in the center of a metal-insulator-metal(MIM)waveguide.According to the effective refractive index modulation caused by different waveg...
National Key Research and Development Program of China(2019YFB2203603);Zhejiang Provincial Major Research and Development Program(2021CO1199);National Science Fund for Distinguished Young Scholars(61725503);National Natural Science Foundation of China(61961146003,91950205);Zhejiang Provincial Natural Science Foundation(LD19F050001,LZ18F050001);Fundamental Research Funds for the Central Universities(2021QNA5002).
Silicon photonic Mach–Zehnder switches(MZSs)have been extensively investigated as a promising candidate for optical systems.However,conventional 2×2 MZSs are usually prone to the size variations of the arm waveguide...
supported by the National Key Research and Development Program of China(Grant No.2017YFA0303700);the National Natural Science Foundation of China(Grant Nos.61632021,11627810,11690031,and 11621091);Open Funds from the State Key Laboratory of High Performance Computing of China(HPCL,National University of Defense Technology)
Single photons and photon pairs are typically generated by spontaneous parametric down conversion or quantum dots;however,spontaneous four-wave mixing(SFWM)in silicon microring resonators[1]is also an appealing source...
This work was supported by ERDF 1.1.1.1 Activity Project Nr.1.1.1.1/16/A/046“Application assessment of novel organic materials by prototyping of photonic devices”.We acknowledge Igors MIHAILOVS for valuable discussions.
An all-organic Mach-Zehnder waveguide device for volatile solvent sensing is presented.Optical waveguide devices offer a great potential for various applications in sensing and communications due to multiple advantage...